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DIN 2527 Carbon Steel (C.S.) Blind Flanges are designed to seal the ends of pipes or vessels in industrial piping systems where no further connection is required. These blind flanges are made from carbon steel, which is known for its strength, durability, and cost-effectiveness. The DIN 2527 standard ensures that these flanges meet precise dimensional and mechanical requirements for reliability under various industrial conditions.
Material Composition of Carbon Steel (C.S.) Blind Flanges:
The material used in DIN 2527 carbon steel blind flanges typically includes carbon steel grades like St 37, St 52, or A105, which are commonly used for pressure-containing parts in piping systems. The general composition of carbon steel includes:
Carbon (C): 0.05% to 0.25% – Provides strength and hardness.
Manganese (Mn): 0.30% to 0.90% – Enhances toughness and strength.
Silicon (Si): 0.10% to 0.60% – Adds strength and hardness.
Phosphorus (P): Up to 0.04% – Ensures better toughness and workability.
Sulfur (S): Up to 0.05% – Keeps the material ductile and machinable.
Iron (Fe): The remainder of the material – Makes up the base composition.
These carbon steel grades provide excellent mechanical properties, such as strength, ductility, and weldability, making them suitable for a wide range of applications in moderate temperature and pressure environments.
Key Features of DIN 2527 Carbon Steel Blind Flanges:
Temperature and Pressure Resistance:
Operating Temperature: Carbon steel can withstand temperatures up to 400°C (752°F) without significant degradation. It is ideal for moderate temperature applications.
Pressure Tolerance: DIN 2527 carbon steel blind flanges come with pressure ratings such as PN6, PN10, PN16, PN25, and higher, ensuring they can safely handle pressure in piping systems.
Corrosion Resistance:
Carbon steel is not highly resistant to corrosion, especially in moisture, chlorides, or acidic environments. To enhance the corrosion resistance, these flanges can be galvanized or coated (with zinc or paint), which helps in increasing their durability in mildly corrosive environments.
Strength and Durability:
Carbon steel offers high strength and good toughness under moderate stress and pressure conditions. It is stronger than mild steel, providing a reliable seal for general industrial use.
Dimensional Accuracy and Pressure Class:
The DIN 2527 standard ensures precise dimensional accuracy, enabling easy and reliable installation. Carbon steel blind flanges come in different pressure ratings like PN6, PN10, PN16, and PN25, providing flexibility based on the system's pressure requirements.
Design and Types of DIN 2527 Carbon Steel Blind Flanges:
Standard Blind Flange (Type A):
A solid circular flange used for general isolation of pipeline sections where no further connection is needed.
Flat-Faced Blind Flange:
This flange features a flat sealing surface, making it suitable for low-pressure systems or applications where a tight seal is not required.
Raised Face Blind Flange:
Has a raised surface for a better seal in medium-to-high-pressure systems, where the flange is bolted to a matching raised face of another flange.
Ring-Type Joint (RTJ) Blind Flange:
Used in high-pressure systems, this flange has a groove that holds an RTJ gasket, offering a superior seal under high-pressure conditions.
Long Weld Neck Blind Flange:
Features an extended neck for welding to the pipe, providing additional strength and making it suitable for high-pressure or high-stress applications.
Nominal Diameter:
Available in a wide range of nominal diameters (e.g., DN10, DN50, DN150, DN600), ensuring compatibility with different pipe sizes and system requirements.
DIN 2527 Mild Steel Blind Flanges are specialized components designed to seal the ends of pipes or vessels in industrial piping systems where no further connection is required. These flanges, made from mild steel, are used in a wide range of applications due to the material's strength, cost-effectiveness, and ease of fabrication. The DIN 2527 standard ensures that these flanges meet the highest specifications for dimensional accuracy, pressure tolerance, and mechanical strength, making them ideal for general-purpose sealing in various industries.
Material Composition of Mild Steel (MS) Flanges:
Mild steel, or low-carbon steel, is commonly used for manufacturing DIN 2527 blind flanges. The composition of mild steel typically includes:
Carbon (C): 0.05% to 0.25% – Provides strength while ensuring ductility and ease of welding.
Manganese (Mn): 0.30% to 0.90% – Enhances strength and hardenability.
Silicon (Si): 0.10% to 0.60% – Contributes to deoxidation and strength.
Phosphorus (P): Up to 0.04% – Low phosphorus content ensures better toughness.
Sulfur (S): Up to 0.05% – Low sulfur content to avoid brittleness.
Iron (Fe): The remaining composition – Mild steel is primarily iron.
This composition provides a cost-effective material with good weldability, formability, and mechanical properties for most non-corrosive applications.
Key Features of DIN 2527 Mild Steel Blind Flanges:
Temperature and Pressure Resistance:
Operating Temperature: While mild steel doesn't handle extreme temperatures as well as superalloys like Inconel, it is suitable for moderate temperature environments where temperatures do not exceed around 300°C (572°F).
Pressure Tolerance: DIN 2527 mild steel blind flanges are available in standard pressure ratings, such as PN6, PN10, PN16, and higher pressure classes depending on the application. These pressure ratings ensure the flanges are safe and durable under normal industrial pressures.
Dimensional Accuracy and Pressure Class:
The DIN 2527 standard ensures precise dimensional accuracy of mild steel blind flanges, making them easy to install in piping systems. These flanges are available in various sizes and thicknesses, with flanges designed to meet specific pressure classes such as PN6, PN10, PN16, PN25, and PN40, depending on the application.
Design and Types of DIN 2527 Mild Steel Blind Flanges:
Standard Blind Flange (Type A): A solid, circular flange ideal for general applications where no further connection is required. It provides a simple and reliable seal for pipeline isolation.
Flat-Faced Blind Flange: Features a flat sealing surface, suitable for low-pressure systems or applications with minimal sealing requirements. It is typically used in systems where the flange is bolted directly to a flat mating surface.
Raised Face Blind Flange: Has a raised surface to improve sealing performance under higher pressure applications. This type ensures a tighter seal and is ideal for medium-to-high-pressure systems.
Ring-Type Joint (RTJ) Blind Flange: Designed for high-pressure systems, it has a groove that holds an RTJ gasket. This design ensures a high-pressure seal and is often used in critical applications where pressure integrity is essential.
Long Weld Neck Blind Flange: Features an extended neck for welding to the pipe, offering additional strength and stability. It is used in high-pressure or stressed systems that require the flange to be securely welded to the pipeline.
Nominal Diameter: Available in a wide range of nominal diameters (e.g., DN10, DN50, DN150, DN600, DN1000), to accommodate different pipe sizes and system requirements.
DIN 2527 SS P.H. (Precipitation Hardening) Blind Flanges are designed for use in high-performance piping systems that require robust sealing solutions. Made from precipitation-hardening stainless steel alloys, these flanges combine high strength, excellent corrosion resistance, and the ability to withstand elevated temperatures. Manufactured to meet the DIN 2527 standard, these flanges ensure dimensional accuracy, high pressure tolerance, and superior mechanical performance, making them ideal for demanding applications in industries such as chemical processing, aerospace, and power generation.
Material Composition of Precipitation Hardening Stainless Steel (SS P.H.):
Precipitation-hardening stainless steels are a family of alloys known for their ability to achieve high strength through heat treatment.
Grade 17-4 PH:
Chromium (Cr): 15.0% - 17.5%
Nickel (Ni): 3.0% - 5.0%
Copper (Cu): 3.0% - 5.0%
Iron (Fe): Balance
Manganese (Mn): 1.0% max
Silicon (Si): 1.0% max
Carbon (C): ≤ 0.07%
Phosphorus (P): ≤ 0.04%
Sulfur (S): ≤ 0.03%
Grade 15-5 PH:
Chromium (Cr): 14.0% - 15.5%
Nickel (Ni): 3.5% - 5.5%
Copper (Cu): 2.5% - 4.5%
Iron (Fe): Balance
Manganese (Mn): 1.0% max
Silicon (Si): 1.0% max
Carbon (C): ≤ 0.07%
Phosphorus (P): ≤ 0.04%
Sulfur (S): ≤ 0.03%
Key Features of DIN 2527 SS P.H. Blind Flanges:
High Strength: Precipitation-hardened stainless steels, such as 17-4 PH and 15-5 PH, are known for their high tensile strength and hardness.
Corrosion Resistance: Stainless steel, especially in the precipitation-hardened grades, offers excellent resistance to corrosion, including resistance to pitting, crevice corrosion, and stress corrosion cracking in both aqueous and high-temperature environments
High-Temperature Performance: SS P.H. Blind Flanges can withstand high temperatures, making them suitable for use in applications that involve elevated temperatures (up to 600°C or 1100°F), such as chemical reactors, power plants, and aerospace systems.
Dimensional Accuracy & Pressure Ratings:
These flanges are manufactured to precise DIN 2527 standards to ensure tight seals and correct fitment in piping systems.
They are available in multiple pressure classes such as PN6, PN10, and PN16, which denote the maximum pressure the flange can safely withstand.
Design Options:
Standard Blind Flange (Type A): A solid, circular flange used to seal the end of a pipe or vessel, suitable for general applications.
Flat-Faced Blind Flange: Features a flat sealing surface for low-pressure applications, ideal for ensuring a tight seal in systems with low pressure.
Raised Face Blind Flange: Has a raised area around the center, providing enhanced sealing for higher-pressure applications.
Ring-Type Joint (RTJ) Blind Flange: Designed with a groove for a ring-type joint gasket, used in high-pressure systems such as oil and gas pipelines.
Long Weld Neck Blind Flange: Equipped with an extended neck for welding, offering additional strength and support in high-pressure or stressed systems.
Nominal Diameter:
DIN 2527 SS P.H. Blind Flanges are available in various nominal diameters (DN), ranging from DN10 (1/2 inch) up to DN600 (24 inches) or larger, ensuring compatibility with a wide range of piping systems and applications.
DIN 2527 Titanium Grade 5 Blind Flanges are premium-quality sealing components designed to close off the open ends of pipes, vessels, or equipment in systems where no further connection is needed. Made from Titanium Grade 5 (Ti-6Al-4V), these flanges are known for their superior strength, excellent corrosion resistance, and lightweight properties. Titanium Grade 5 is an alloy composed of titanium, aluminum, and vanadium, making it stronger and more heat-resistant than commercially pure titanium (Grade 2). These flanges adhere to the DIN 2527 standard, ensuring that they meet the precise requirements for dimensional accuracy, pressure tolerance, and mechanical performance.
Material Composition of Titanium Grade 5 (Ti-6Al-4V):
Titanium Grade 5, also known as Ti-6Al-4V, is composed of the following elements:
Titanium (Ti): 90.0% min
Aluminum (Al): 6.0% - 7.0%
Vanadium (V): 3.5% - 4.5%
Iron (Fe): 0.25% max
Oxygen (O): 0.20% max
Carbon (C): 0.10% max
Nitrogen (N): 0.05% max
Hydrogen (H): 0.015% max
Titanium Grade 5 is one of the most widely used titanium alloys due to its high strength, resistance to corrosion, and ability to withstand elevated temperatures, making it suitable for high-performance applications.
Key Features of DIN 2527 Titanium Grade 5 Blind Flanges:
Superior Strength:
Titanium Grade 5 offers high strength (approximately 130 ksi tensile strength) while maintaining its light weight, making it suitable for demanding applications where both strength and low mass are important, such as in aerospace and military systems.
Corrosion Resistance:
Titanium Grade 5 exhibits exceptional corrosion resistance, particularly against chlorides, seawater, and acidic environments. It is highly resistant to pitting, crevice corrosion, and stress corrosion cracking.
It performs well in the presence of strong acids like sulfuric and hydrochloric acids, making it suitable for chemical processing systems, offshore, and marine applications.
Temperature Resistance:
Titanium Grade 5 can withstand elevated temperatures, with a continuous operating temperature up to 400°C (752°F) and intermittent exposure to higher temperatures. This makes it suitable for high-temperature applications in aerospace, power generation, and chemical industries.
Light Weight:
Titanium alloys, including Grade 5, have a very low density, approximately 60% of that of steel, making them an excellent choice for applications where weight reduction is a priority, such as in the aerospace and automotive industries.
Dimensional Accuracy & Pressure Ratings:
DIN 2527 Titanium Grade 5 Blind Flanges are manufactured to exacting standards to ensure a tight, secure seal in piping systems.
Available in various pressure classes such as PN6, PN10, and PN16, allowing compatibility with a range of piping systems depending on the pressure requirements.
Design Options:
Standard Blind Flange (Type A): A solid, circular flange used to seal the end of a pipe or vessel.
Flat-Faced Blind Flange: Designed with a flat sealing surface for low-pressure systems.
Raised Face Blind Flange: Features a raised area around the center for improved sealing in higher pressure applications.
Ring-Type Joint (RTJ) Blind Flange: Designed for high-pressure applications with a groove for a ring-type joint gasket, commonly used in the oil and gas industries.
Long Weld Neck Blind Flange: Includes an extended neck for welding, providing additional strength in high-pressure or stressed systems.
Nominal Diameter:
DIN 2527 Titanium Grade 5 Blind Flanges are available in a variety of nominal diameters (DN), ranging from DN10 (1/2 inch) up to DN600 (24 inches) or larger, depending on system requirements.
DIN 2527 Titanium Grade 2 Blind Flanges are specialized sealing components designed to close the open ends of pipes, vessels, or equipment in systems where no further connections are required. Made from Titanium Grade 2, these flanges are renowned for their excellent corrosion resistance, high strength, and light weight. Titanium Grade 2 is the most commonly used commercially pure titanium, offering a great combination of strength and durability for a wide range of industrial applications. The DIN 2527 standard ensures that these flanges meet precise dimensional, pressure, and mechanical requirements.
Material Composition of Titanium Grade 2:
Titanium Grade 2 (commercially pure titanium) is primarily composed of the following elements:
Titanium (Ti): 99.2% min
Iron (Fe): 0.30% max
Oxygen (O): 0.25% max
Carbon (C): 0.08% max
Nitrogen (N): 0.03% max
Hydrogen (H): 0.015% max
Titanium Grade 2 is known for its outstanding combination of strength, ductility, and resistance to corrosion, making it suitable for a wide variety of industrial uses, especially in environments where high corrosion resistance is critical.
Key Features of DIN 2527 Titanium Grade 2 Blind Flanges:
Corrosion Resistance:
Titanium Grade 2 is highly resistant to corrosion, particularly in environments that are exposed to chloride ions, seawater, and acidic conditions. It offers exceptional protection against pitting, crevice corrosion, and stress corrosion cracking.
These flanges are ideal for use in applications involving harsh chemicals, acids, and marine environments, including seawater pipelines, desalination plants, and chemical processing systems.
Strength and Durability:
While Titanium Grade 2 is not as strong as titanium alloys with added elements like aluminum and vanadium (e.g., Grade 5), it still offers excellent strength-to-weight ratio, especially in terms of tensile strength and resistance to deformation under stress.
It retains its strength even at elevated temperatures, making it reliable in systems exposed to thermal cycling and fluctuating temperatures.
Temperature Resistance:
Titanium Grade 2 maintains its performance at temperatures up to 400°C (752°F), providing stability and durability in environments with moderate to high temperatures. This makes it suitable for a wide range of industrial applications.
Dimensional Accuracy and Pressure Ratings:
DIN 2527 Titanium Grade 2 Blind Flanges are produced to precise specifications, ensuring accurate dimensions for a secure and reliable seal.
These flanges are available in various pressure classes such as PN6, PN10, and PN16, depending on the requirements of the piping system.
Design Variations:
Standard Blind Flange (Type A): A solid, circular flange used to completely seal the end of a pipe or vessel.
Flat-Faced Blind Flange: Designed with a flat sealing surface, ideal for low-pressure systems where a tight seal is required.
Raised Face Blind Flange: Features a raised center portion to improve sealing capabilities in higher pressure systems.
Ring-Type Joint (RTJ) Blind Flange: Incorporates a groove for a ring-type joint gasket, typically used in high-pressure and critical applications such as oil and gas pipelines.
Long Weld Neck Blind Flange: Has an extended neck, offering additional strength, particularly useful in high-stress or high-pressure environments.
Nominal Diameter:
DIN 2527 Titanium Grade 2 Blind Flanges come in various nominal diameters (DN), ranging from DN10 (1/2 inch) up to DN600 (24 inches) or larger, depending on the system requirements.
DIN 2527 Titanium Blind Flanges are specialized components used to seal the open ends of pipes, vessels, or other equipment in industrial systems where no further connection is required. Made from Titanium alloys, these flanges offer a combination of high strength, excellent corrosion resistance, and light weight, making them an ideal choice for applications in demanding environments. Manufactured according to the DIN 2527 standard, these flanges ensure high levels of dimensional accuracy, pressure tolerance, and mechanical strength, which are critical for maintaining the integrity of piping systems.
Material Composition of Titanium Alloys:
Titanium alloys used for DIN 2527 Blind Flanges typically include:
Grade 2 Titanium (Commercially Pure Titanium):
Titanium (Ti): 99.2% min
Iron (Fe): 0.30% max
Oxygen (O): 0.25% max
Carbon (C): 0.08% max
Nitrogen (N): 0.03% max
Hydrogen (H): 0.015% max
Grade 5 Titanium (Ti-6Al-4V):
Titanium (Ti): 90.0% min
Aluminum (Al): 6.0% - 7.0%
Vanadium (V): 3.5% - 4.5%
Iron (Fe): 0.25% max
Oxygen (O): 0.20% max
Carbon (C): 0.10% max
Nitrogen (N): 0.05% max
Hydrogen (H): 0.015% max
Key Features of DIN 2527 Titanium Blind Flanges:
Corrosion Resistance:
Titanium is highly resistant to corrosion, especially in chloride, seawater, and acidic environments, making Titanium Blind Flanges ideal for use in marine, chemical, and offshore applications. Titanium alloys offer superior resistance to pitting, crevice corrosion, and stress corrosion cracking, even in extreme environments like high salinity and acidic conditions.
High Strength-to-Weight Ratio:
Titanium has an excellent strength-to-weight ratio, making it significantly stronger than many steel alloys while being much lighter. This is particularly beneficial in industries where weight reduction is essential, such as aerospace and marine industries.
Temperature Resistance:
Titanium alloys can withstand high temperatures, with Grade 2 Titanium performing well at up to 400°C (752°F) and Grade 5 Titanium being suitable for continuous service at up to 400°C (752°F) as well, with intermittent exposure to even higher temperatures.
Dimensional Accuracy and Pressure Class:
DIN 2527 Titanium Blind Flanges are manufactured to precise dimensions, ensuring a secure seal within the piping system.
Available in different pressure classes such as PN6, PN10, PN16, etc., ensuring compatibility with a wide range of piping systems.
Design Options:
Standard Blind Flange (Type A): A solid, circular disc used to seal the end of a pipe or vessel. Commonly used in general applications.
Flat-Faced Blind Flange: Features a flat sealing surface, ideal for low-pressure systems.
Raised Face Blind Flange: Includes a raised area around the center for improved sealing in higher pressure systems.
Ring-Type Joint (RTJ) Blind Flange: Designed with a groove to accommodate a ring-type joint gasket, used for high-pressure applications, particularly in the oil and gas industry.
Long Weld Neck Blind Flange: Features an extended neck for welding, providing additional strength and stability, commonly used in high-pressure or high-stress systems.
Nominal Diameter:
DIN 2527 Titanium Blind Flanges are available in a variety of nominal diameters (DN), typically ranging from DN10 (1/2 inch) up to DN600 (24 inches) or more, based on the application needs.
DIN 2527 Inconel Blind Flanges are specialized components designed to close off the ends of pipes or vessels in industrial piping systems, where no further connection is required. These blind flanges are made from Inconel alloys, a family of high-performance superalloys, known for their outstanding strength, resistance to high temperatures, and corrosion resistance in aggressive environments. The DIN 2527 standard ensures that these flanges meet the highest specifications for dimensional accuracy, pressure tolerance, and mechanical strength.
Material Composition of Inconel Alloys:
The primary materials used in the production of DIN 2527 Inconel Blind Flanges include Inconel 600, Inconel 625, and Inconel 718, each offering specific advantages depending on the application:
Inconel 600 (Ni 72%, Cr 15%): Known for excellent resistance to oxidation and corrosion in high-temperature environments.
Inconel 625 (Ni 58%, Cr 21%, Mo 9%): Offers superior resistance to pitting, stress corrosion cracking, and oxidation.
Inconel 718 (Ni 50%, Cr 19%, Mo 3%, Nb 5%): Known for high strength and excellent fatigue and thermal-fatigue strength.
These alloys provide superior resistance to a wide range of harsh environments, such as high-temperature oxidation, sulfuric and phosphoric acid corrosion, and chloride-induced stress corrosion cracking.
Key Features of DIN 2527 Inconel Blind Flanges:
Temperature and Pressure Resistance:
Operating Temperature: Inconel alloys can withstand extremely high temperatures, with Inconel 600 handling temperatures up to 1093°C (2000°F), Inconel 625 up to 982°C (1800°F), and Inconel 718 capable of continuous operation at temperatures of up to 700°C (1292°F).
Pressure Tolerance: Designed to endure elevated pressures, with pressure ratings available in PN6, PN10, PN16, and other standard pressure classes, ensuring safety under extreme operating conditions.
Corrosion Resistance: Exceptional resistance to oxidation, scaling, and various forms of corrosion, particularly in high-temperature environments. Inconel 625 is particularly effective in marine and chemical processing environments due to its resistance to pitting and crevice corrosion.
Strength and Durability: Inconel alloys exhibit outstanding mechanical strength, even at high temperatures, ensuring the structural integrity of piping systems under stress. The DIN 2527 standard defines the dimensions and design to accommodate high-stress conditions, making these flanges essential in demanding industries.
Dimensional Accuracy and Pressure Class: DIN 2527 ensures precise dimensional accuracy, allowing for effective sealing and easy installation in piping systems.
Available in various sizes and thicknesses, with flanges designed to meet specific pressure classes like PN6, PN10, and PN16, depending on the application.
Design and Types:
Standard Blind Flange (Type A): A solid, circular flange ideal for general applications.
Flat-Faced Blind Flange: Features a flat sealing surface, suitable for low-pressure systems.
Raised Face Blind Flange: Has a raised surface for improved sealing in higher pressure applications.
Ring-Type Joint (RTJ) Blind Flange: Designed for high-pressure applications, with a groove for an RTJ gasket.
Long Weld Neck Blind Flange: Offers added strength with an extended neck for welding, often used in high-pressure or stressed systems.
Nominal Diameter: Available in a wide range of nominal diameters, typically from DN10 (1/2 inch) up to DN600 (24 inches) or more, to accommodate different pipe sizes and system requirements.
DIN 2527 Monel Blind Flanges are critical components used in piping systems to seal the open ends of pipes, vessels, or equipment when no further connection is needed. These blind flanges are made from Monel alloys, a group of nickel-copper-based alloys known for their exceptional corrosion resistance, especially in harsh marine and chemical environments. Monel flanges, manufactured to the DIN 2527 standard, ensure superior strength and reliability in demanding applications, making them ideal for industries such as chemical processing, marine, and power generation.
Material Composition of Monel Alloys:
Monel alloys are primarily composed of Nickel (Ni) and Copper (Cu), along with small amounts of other elements such as iron, manganese, and silicon. Two of the most commonly used Monel alloys in blind flange production are:
Monel 400:
Nickel (Ni): 63%
Copper (Cu): 28-34%
Iron (Fe): 2.5% max
Manganese (Mn): 2.0% max
Silicon (Si): 0.5% max
Carbon (C): ≤ 0.30%
Sulfur (S): ≤ 0.024%
Monel K-500:
Nickel (Ni): 63%
Copper (Cu): 28%
Aluminum (Al): 2.3-3.1%
Titanium (Ti): 0.35-0.85%
Iron (Fe): 2.5% max
Manganese (Mn): 1.0% max
Silicon (Si): 0.5% max
Carbon (C): ≤ 0.30%
Sulfur (S): ≤ 0.015%
Key Features of DIN 2527 Monel Blind Flanges:
Corrosion Resistance:
Monel alloys are highly resistant to a wide variety of corrosive agents, including seawater, sulfuric acid, hydrochloric acid, and alkaline environments. Monel 400, in particular, is known for its excellent resistance to chloride-induced stress corrosion cracking, making it ideal for marine applications.
Monel K-500 offers enhanced strength and resistance to corrosion fatigue, commonly used in more challenging environments.
Temperature Resistance:
Monel 400 can withstand temperatures up to 1000°F (538°C) continuously and up to 1200°F (649°C) intermittently.
Monel K-500 offers high strength and resistance to oxidation and scaling in environments up to 1000°F (538°C).
Mechanical Strength:
Monel 400 is known for its strength and durability, especially in environments that require resistance to both high pressure and corrosion.
Monel K-500 exhibits additional strength due to the presence of aluminum and titanium, making it suitable for applications under higher stresses.
Dimensional Accuracy and Pressure Class:
DIN 2527 Monel Blind Flanges are manufactured to precise dimensions, ensuring a secure seal in the piping system.
These flanges are available in various pressure classes, such as PN6, PN10, PN16, and others, providing flexibility for different pressure ratings.
Design Options:
Standard Blind Flange (Type A): A solid, flat disc used to seal the end of a pipe or vessel.
Flat-Faced Blind Flange: Designed with a flat sealing surface, ideal for low-pressure systems.
Raised Face Blind Flange: Features a raised surface around the center to improve sealing in high-pressure systems.
Ring-Type Joint (RTJ) Blind Flange: Includes a groove for an RTJ gasket, used for high-pressure applications, often in the oil and gas industry.
Long Weld Neck Blind Flange: Features an extended neck for welding, offering additional strength and used in high-pressure or stressed systems.
Nominal Diameter:
DIN 2527 Monel Blind Flanges are available in a wide range of sizes, typically from DN10 (1/2 inch) up to DN600 (24 inches) or more, depending on system requirements.
DIN 2527 SS 321 Blind Flanges are specialized components used in industrial piping systems to close off the ends of pipes or equipment where no further connection is necessary. A blind flange is a solid, flat disc without a central bore, specifically designed to seal the open end of a pipe or a vessel. The DIN 2527 standard, developed by the German Institute for Standardization, defines the specifications for these flanges, ensuring that they meet high standards for dimensional accuracy, pressure tolerance, and mechanical strength.
The SS 321 material, used for the production of these blind flanges, is an austenitic stainless steel known for its excellent resistance to high-temperature oxidation, corrosion, and scaling. The addition of titanium to this steel stabilizes its structure, making it suitable for environments where temperatures fluctuate or are consistently high. As a result, SS 321 blind flanges are frequently used in industries where both strength and resistance to harsh environmental conditions are paramount, including the chemical, petrochemical, aerospace, and power generation industries.
By utilizing DIN 2527 SS 321 Blind Flanges, companies can ensure secure, long-lasting, and efficient closures for piping systems under challenging operational conditions. These flanges are essential in maintaining the integrity of systems exposed to elevated pressures and corrosive substances, ensuring the safe containment of fluids and gases.
key Features of DIN 2527 SS 321 Blind Flanges:
Material Composition of SS 321:
Carbon (C): ≤ 0.08%
Chromium (Cr): 17.0 - 19.0%
Nickel (Ni): 9.0 - 12.0%
Titanium (Ti): 5 times the carbon content, generally around 0.60% minimum, to prevent carbide precipitation.
Manganese (Mn): 2.00% max
Silicon (Si): 1.00% max
Phosphorus (P): 0.045% max
Sulfur (S): 0.030% max
Pressure and Temperature Resistance:
Operating Temperature: SS 321 can perform well in high-temperature environments, up to 900°C (1650°F) intermittently and up to around 700°C (1292°F) for continuous service.
Design and Dimensions of DIN 2527 Blind Flanges:
Pressure Ratings: The design of a DIN 2527 blind flange is primarily based on pressure class ratings (such as PN6, PN10, PN16, etc.), which denote the maximum pressure the flange can safely withstand.
Bolt Holes: The number and size of bolt holes for DIN 2527 blind flanges are specified according to the flange's pressure class and size. The bolt pattern is designed to ensure a tight seal and accommodate appropriate bolt sizes for a given pressure class.
Thickness: The thickness of a blind flange can vary depending on the pressure rating and size, with thicker flanges being required for higher pressure applications.
Nominal Diameter: Blind flanges are available in various nominal pipe diameters (DN) ranging from DN10 (1/2 inch) up to DN600 (24 inches) or more.
Types of DIN 2527 SS 321 Blind Flanges:
Standard Blind Flange (Type A): A solid, circular flange used to seal the end of a pipe or vessel. Common for general applications.
Flat-Faced Blind Flange: Has a flat sealing surface, ideal for low-pressure systems and tight sealing.
Raised Face Blind Flange: Features a raised surface around the center for better sealing in higher pressure systems.
Ring-Type Joint (RTJ) Blind Flange: Has a groove for an RTJ gasket, designed for high-pressure applications, often used in the oil and gas industry.
Long Weld Neck Blind Flange: Has an extended neck for welding, providing additional strength and used in high-pressure or stressed systems.
A DIN 2527 AISI 4140 blind flange is a specialized type of blind flange made from AISI 4140 alloy steel, adhering to the DIN 2527 German standard. Blind flanges are crucial components in piping systems, used to seal the end of a pipe, vessel, or valve to isolate it or stop the flow of fluids. The AISI 4140 material used for this specific flange is a high-strength alloy steel known for its robustness and excellent mechanical properties, making it ideal for high-stress applications. AISI 4140, a chromium-molybdenum alloy steel, is renowned for its excellent mechanical properties, including high tensile strength, hardness, and resistance to wear. It is often used in heavy-duty applications such as in the automotive, aerospace, and oil & gas industries, where the need for robust materials is crucial. The use of AISI 4140 steel in a DIN 2527 blind flange ensures that the flange can handle high pressures, temperatures, and mechanical stresses without compromising on performance or safety.
Material: AISI 4140 Alloy Steel
Composition: AISI 4140 is a medium-carbon steel alloy that contains chromium (Cr) and molybdenum (Mo) as its primary alloying elements. These elements improve the steel's hardness, strength, and wear resistance.
Key Properties:
Strength: High tensile strength and yield strength, making it capable of withstanding high loads and stress in high-pressure applications.
Toughness: Offers excellent toughness and impact resistance, making it suitable for challenging environments where forces are dynamic.
Hardness: Can be heat-treated to achieve high hardness levels, providing resistance to wear and abrasion.
Corrosion Resistance: While AISI 4140 is not as corrosion-resistant as stainless steel, it can still perform well in less corrosive environments with proper surface treatment (e.g., coatings or galvanizing).
Design and Dimensions (DIN 2527)
Shape: The blind flange is a flat, circular plate with no central hole. Its purpose is to seal the end of a pipe or vessel, effectively "closing" the pipeline or system.
Bolt Holes: The flange has evenly spaced bolt holes around the perimeter, allowing it to be bolted securely to the corresponding flange or fitting in the system. These holes align with the bolt pattern of other components.
Thickness: The flange thickness varies depending on the size, pressure class, and specific application requirements. It is designed to withstand internal pressure while providing a reliable seal.
Pressure Rating: Flanges are typically rated according to pressure classes such as PN 6, PN 10, PN 16, PN 25, etc., indicating the maximum pressure the flange can safely handle without failure.
Applications
Pipeline Sealing: The primary function of a blind flange is to seal the open end of a pipeline, preventing the passage of fluids, gases, or other materials through the system.
System Isolation: Blind flanges are used to isolate a section of the system for maintenance or repairs, allowing for safe disconnection of parts while maintaining system integrity.
Pressure Containment: AISI 4140 blind flanges are also used in applications where maintaining pressure within a system is critical. The high strength and durability of AISI 4140 make it suitable for use in high-pressure environments.
Types of Blind Flanges in DIN 2527
Raised Face (RF): The flange surface has a small raised area around the bolt circle to improve sealing when mated with a gasket.
Flat Face (FF): The flange surface is level with the flange body, typically used with softer gaskets to create a seal.
Ring Type Joint (RTJ): The flange may feature a groove to accommodate a metal ring gasket for high-pressure applications, providing a secure, reliable seal.
A DIN 2527 AISI 8630 blind flange is a specialized type of blind flange made from AISI 8630 alloy steel, designed according to the DIN 2527 German standard. Blind flanges are essential components in industrial piping systems, used to seal the end of a pipe, vessel, or valve to isolate it or prevent the flow of fluids. The AISI 8630 material used for this specific flange provides excellent strength, toughness, and wear resistance, making it ideal for applications in high-stress environments.
Material: AISI 8630 Alloy Steel
AISI 8630 is a low-alloy steel, enriched with nickel, chromium, and molybdenum for enhanced mechanical properties. It is known for its strength, toughness, and resistance to wear, making it suitable for heavy-duty applications, particularly in industries where components are subjected to high stress and pressure.
Composition of AISI 8630:
Carbon (C): 0.30% – 0.35%
Provides strength and hardness.
Chromium (Cr): 0.80% – 1.10%
Improves hardness, wear resistance, and high-temperature strength.
Molybdenum (Mo): 0.15% – 0.25%
Enhances hardenability and resistance to wear.
Nickel (Ni): 0.80% – 1.20%
Adds toughness, especially at lower temperatures.
Other elements: Small amounts of manganese (Mn), silicon (Si), and phosphorus (P), which improve the overall material quality and processing properties.
Design and Dimensions (DIN 2527)
Shape:
The blind flange is a flat, circular plate with no central hole, designed to seal the open end of a pipe, valve, or vessel.
Bolt Holes:
The flange features evenly spaced bolt holes around the perimeter, which allow it to be securely attached to a matching flange or component. These holes align with the bolt pattern of the corresponding system components.
Thickness:
The thickness of the flange varies depending on the size and pressure rating, ensuring it can withstand internal pressure and provide a reliable seal.
Pressure Rating: Pressure ratings are typically defined using classes such as PN 6, PN 10, PN 16, PN 25, etc., which represent the maximum pressure the flange can safely withstand without failure.
Applications of DIN 2527 AISI 8630 Blind Flange
Pipeline Sealing:
The primary function of the blind flange is to seal the end of a pipeline, effectively preventing the passage of fluids, gases, or other materials.
System Isolation:
It is used to isolate sections of the pipeline for maintenance or repairs, allowing safe disconnection without compromising the integrity of the system.
Pressure Containment:
The high strength and durability of AISI 8630 make it suitable for applications where maintaining pressure within the system is critical, ensuring the flange can handle high-pressure environments.
Types of Blind Flanges in DIN 2527
Blind flanges conforming to DIN 2527 can be found in different face types and sealing methods, including:
Raised Face (RF):
The flange surface has a slight raised area around the bolt circle, improving the seal when mated with a gasket.
Flat Face (FF):
The surface is level with the flange body and typically used with softer gaskets to create a seal.
Ring Type Joint (RTJ):
This type has a groove to accommodate a metal ring gasket, providing a secure seal in high-pressure applications.
Conclusion
A DIN 2527 AISI 8630 blind flange is a high-strength, durable sealing component designed for high-pressure and high-stress environments. Made from AISI 8630 alloy steel, it offers excellent mechanical properties such as strength, toughness, and wear resistance, making it ideal for use in industrial systems that require reliable seals under heavy loads and elevated temperatures.
Super Duplex Stainless Steel (SDSS) is an advanced type of Duplex Stainless Steel that combines the benefits of both austenitic and ferritic structures but with higher levels of chromium, nickel, and molybdenum, along with additional nitrogen content. This makes Super Duplex Stainless Steel (such as Super Duplex 2507) an ideal material for extremely demanding environments, particularly those exposed to harsh corrosive conditions.
Material: Super Duplex Stainless Steel
Superior Corrosion Resistance: Super Duplex stainless steels (e.g., 2507) offer exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC), especially in environments with high chloride exposure. This makes them perfect for use in seawater, chemical processing, and offshore oil and gas applications.
Strength: Super Duplex steels provide significantly higher tensile strength than standard Duplex and austenitic grades (such as 304 and 316), making them ideal for high-pressure and heavy-duty applications. Super Duplex steel has roughly twice the strength of 304 or 316 stainless steels.
Temperature Resistance: Super Duplex stainless steels maintain good performance at moderate to high temperatures, typically performing well up to around 300°C (572°F). They can endure high-temperature environments but are not suitable for extreme high-temperature applications (e.g., above 400°C).
Resistance to Chloride Stress Corrosion Cracking (SCC): Super Duplex stainless steels are particularly resistant to chloride-induced stress corrosion cracking, which is a significant advantage in industries that face exposure to seawater, brine, or other chloride-rich environments.
Common Types of DIN 2527 Super Duplex Stainless Steel Blind Flanges:
1.4410 (F53): Offers excellent resistance to corrosion, high strength, and toughness, widely used in oil & gas, marine, and chemical industries.
1.4501 (F55): Higher alloy content, offering superior resistance to pitting and stress corrosion cracking, often used in subsea and offshore applications.
1.4412 (F60): Known for resistance to extreme environments like offshore and petrochemical industries.
Design and Dimensions
Shape: DIN 2527 blind flanges made from Super Duplex Stainless Steel follow the same general design as other flanges: flat, round plates with no central hole, used to seal the ends of pipes or pressure vessels.
Bolt Holes: These flanges are equipped with bolt holes for bolting to other flanged components, ensuring a secure connection. The number and size of the bolt holes are determined by the flange's diameter and the pressure class.
Thickness: The flange thickness varies depending on the pressure rating (e.g., PN 6, PN 10, PN 16, PN 25). Thicker flanges are designed to handle higher pressures, ensuring a secure seal and reliable performance.
Pressure Rating: Super Duplex stainless steel blind flanges are designed for high-pressure environments. Due to their strength and resistance to corrosion, they are typically used in PN 10, PN 16, and PN 25 pressure ratings, although they can be designed for even higher pressure ratings depending on the application.
Types of Blind Flanges in DIN 2527 (Super Duplex)
Raised Face (RF): The raised face provides a contact area for a gasket, enhancing the sealing performance. This type of flange is commonly used with a gasket to improve sealing, particularly in systems that operate under high pressure.
Flat Face (FF): The face of the flange is level with the surface and is often paired with a soft gasket to provide a tight seal. This design is typically used for low-pressure applications where sealing is not as critical.
Ring Type Joint (RTJ): This type of flange features a groove for a metallic gasket, providing a secure seal under high pressure and harsh conditions. RTJ flanges are typically used in offshore oil and gas or chemical plants, where extreme conditions require highly durable sealing methods.
When considering Duplex Stainless Steel for DIN 2527 Blind Flanges, the material offers unique advantages over traditional stainless steels, combining the benefits of both austenitic and ferritic microstructures. Duplex Stainless Steel typically contains a higher percentage of chromium, molybdenum, and nitrogen, which significantly enhances its properties, especially for highly demanding and corrosive environments.
Material: Duplex Stainless Steel
Superior Corrosion Resistance: Duplex stainless steels (e.g., 2205 or 2507) offer outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking, which makes them highly suitable for industries exposed to aggressive environments, such as offshore oil and gas, chemical processing, and marine industries.
Strength: Duplex stainless steels have higher tensile strength than standard austenitic steels (such as 304 or 316), allowing the flange to perform under higher mechanical stress and pressure. The material is typically twice as strong as conventional 304 and 316 stainless steels.
Temperature Resistance: Duplex materials offer good performance in high-temperature environments, although not as high as some alloys specifically designed for extreme heat (e.g., Inconel). They perform well in moderate to high-temperature applications.
Resistance to Chloride Stress Corrosion Cracking (SCC): Duplex steels are particularly resistant to chloride-induced stress corrosion cracking, which is one of the key benefits in applications exposed to chloride-rich environments, such as seawater.
Common types of duplex stainless steel blind flanges include:
1.4462 (F51): Standard duplex steel, offering good corrosion resistance and strength, used in chemical, oil & gas, and marine industries.
1.4410 (F53): Super duplex steel, with higher strength and better corrosion resistance, used in offshore and high-pressure applications.
1.4539 (Alloy 20): Highly resistant to acid and chloride environments, used in chemical processing and power generation.
Design and Dimensions
Shape: Blind flanges in DIN 2527, regardless of the material (Stainless Steel 316 or Duplex), are flat, round plates without a central hole, used to close off the ends of pipes or pressure vessels.
Bolt Holes: Like other blind flanges, duplex flanges come with bolt holes for bolting the flange to a mating flanged component. The bolt holes' number and size depend on the flange's diameter and the pressure class.
Thickness: The thickness varies according to the pressure rating (e.g., PN 6, PN 10, PN 16, PN 25). Thicker flanges are designed for higher-pressure applications to maintain a secure and tight seal.
Pressure Rating: Duplex stainless steel blind flanges are often used in high-pressure environments due to their strength. The specific pressure ratings depend on the material grade (e.g., Duplex 2205, Super Duplex 2507), but they generally exhibit higher pressure resistance than austenitic stainless steels like 316.
Types of Blind Flanges in DIN 2527 (Duplex)
Raised Face (RF): A raised face provides a contact area for the gasket, enhancing the sealing performance when paired with a gasket.
Flat Face (FF): The face of the flange is level with the surface, which is suitable for softer gaskets that offer a tight seal without excessive pressure.
Ring Type Joint (RTJ): For high-pressure applications, Duplex stainless steel blind flanges can feature a groove for a metallic gasket. This design ensures a tight seal under extreme conditions, often used in offshore and chemical plant environments.
Benefits of Duplex Stainless Steel Blind Flanges
Cost-Efficiency: While Duplex steels can be more expensive than austenitic grades, they offer a better cost-to-performance ratio due to their enhanced durability and strength, leading to longer service life and reduced maintenance costs.
Improved Mechanical Properties: Duplex steels' unique composition offers a blend of high tensile strength and excellent corrosion resistance, making them perfect for demanding environments where other materials might not perform as well.
DIN 2527 is a German standard that defines the dimensions, design, and tolerances for flanges, including blind flanges. Blind flanges made of stainless steel 316 are commonly used in piping systems to seal the ends of pipes, providing a secure and reliable closure. Here's a detailed description of DIN 2527 Stainless Steel 316 Blind Flanges:
Material:
Stainless Steel 316: This is a higher grade of stainless steel compared to 304, offering superior corrosion resistance. Stainless steel 316 contains molybdenum, which enhances its resistance to corrosion, particularly against chlorides, making it ideal for environments with higher risks of corrosion, such as seawater, chemicals, and marine environments.
Corrosion Resistance: Stainless steel 316 has excellent resistance to a wide range of chemicals and industrial environments.
Temperature Resistance: It can withstand higher temperatures compared to 304 stainless steel, making it suitable for high-temperature applications.
Strength: Stainless steel 316 has slightly higher tensile strength compared to 304, offering added durability and structural integrity.
Design and Dimensions:
Shape: Blind flanges are flat, round plates with no center hole, used to seal the end of a pipe or pressure vessel.
Bolt Holes: These flanges have bolt holes to align with bolts for connecting to other flanged components. The number and size of bolt holes depend on the diameter of the flange and the pressure class.
Thickness: The thickness of DIN 2527 blind flanges varies depending on the pressure class (PN 6, PN 10, PN 16, PN 25, etc.). Thicker flanges can handle higher pressure ratings and provide a more secure seal.
Pressure Rating: Similar to other flanges, the pressure rating for DIN 2527 blind flanges is important for determining the maximum pressure they can withstand without failure. Stainless steel 316 flanges can be designed to withstand high-pressure applications.
Applications:
Sealing: Blind flanges made of stainless steel 316 are used to seal the end of a pipeline or vessel to prevent fluid leakage, effectively creating a closed system.
System Isolation: These flanges are used to isolate sections of a piping system for maintenance or modification, allowing for safe shutoff of pressure or fluid flow.
High-Corrosion Environments: Due to the superior corrosion resistance of stainless steel 316, these blind flanges are used in industries where exposure to corrosive materials, saltwater, or harsh chemicals is a concern (e.g., chemical processing, marine, pharmaceutical, food processing).
Types of Blind Flanges in DIN 2527:
Raised Face (RF): The face of the flange is slightly raised to improve the sealing capability when paired with a gasket.
Flat Face (FF): The face of the flange is level with the surface, often used with softer gaskets for a secure seal.
Ring Type Joint (RTJ): For applications requiring high pressure, a ring-type joint may be used, which features a groove in the flange for a metallic gasket.
DIN 2527 is a German standard for flanges, and it specifies the design, dimensions, and tolerances for blind flanges made of stainless steel 304. These flanges are commonly used in piping systems to seal the end of a pipe, creating a closed-off section. Here’s a detailed description:
DIN 2527 Stainless Steel 304 Blind Flanges
Material:
Stainless Steel 304: This is an austenitic grade of stainless steel known for its excellent corrosion resistance, particularly against atmospheric, chemical, and other harsh environments. Stainless steel 304 is also known for its good weldability, formability, and strength, making it an ideal material for flanges used in a variety of industries, including chemical, food processing, and construction.
Design and Dimensions:
Shape: Blind flanges are flat, circular plates with no center hole, designed to seal the end of a pipeline or vessel.
Bolt Holes: These flanges are designed to match the corresponding pipe flange with holes to align with the bolts that will attach them to other flanged components. The bolt holes are usually equally spaced around the perimeter.
Thickness: The thickness of DIN 2527 blind flanges varies depending on the pressure rating and the size of the flange. This thickness is essential for the flange to withstand internal pressure and provide a secure seal.
Pressure Rating:
These flanges are rated according to pressure classes such as PN 6, PN 10, PN 16, PN 25, etc. The rating determines the maximum pressure the flange can safely handle without failure.
Applications:
Pipeline Sealing: Primarily used to seal the open end of a pipeline or system to prevent leaks and maintain pressure in a closed system.
System Isolation: Used when isolating a section of the system for maintenance or modification, as they allow for the easy disconnection of parts.
Pressure Containment: In applications where maintaining pressure is essential, a DIN 2527 blind flange provides a tight seal that can withstand varying levels of internal pressure.
Features:
Corrosion Resistance: As the flange is made of stainless steel 304, it offers excellent resistance to corrosion, even in moderately acidic or alkaline environments.
Temperature Resistance: Stainless steel 304 can withstand high temperatures, making it suitable for use in elevated temperature environments.
Durability: Stainless steel 304 has excellent strength and durability, ensuring a long service life with minimal wear or corrosion.
Types of Blind Flanges in DIN 2527:
Raised Face: The face of the flange is slightly raised to create a better seal when mated with the gasket.
Flat Face: The face is level with the rest of the flange surface and is generally used with softer gaskets to create the seal.
Ring Type Joint (RTJ): Some blind flanges may also come with a grooved surface designed for use with metallic gaskets that provide a more secure, high-pressure seal.
These DIN 2527 stainless steel 304 blind flanges are essential components in many piping systems, offering a reliable, durable, and efficient way to seal and isolate sections of the pipeline.
Gr2 Titanium Blind Flanges
Material: GR2(F2)
Standard:ANSI B16.5,ANSI B16.47A, ANSI B16.47
Size:1/2"~80"
Class 150 class 300 class 600 class 900 class 1500
Technique:Forged, CNC machined
titanium flanges function
The flange, gasket and bolt are connected to each other as a detachable connection of a combined sealing structures.
Flange connection is an important connection method for pipeline construction.
The flange connection is easy to use and can withstand great pressure.
Gr2 Titanium Blind Flanges
Material: GR2(F2)
Standard:ANSI B16.5,ANSI B16.47A, ANSI B16.47
Size:1/2"~80"
Class 150 class 300 class 600 class 900 class 1500
Technique:Forged, CNC machined
titanium flanges function
The flange, gasket and bolt are connected to each other as a detachable connection of a combined sealing structures.
Flange connection is an important connection method for pipeline construction.
The flange connection is easy to use and can withstand great pressure.
