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Duplex Flanges

DIN 2627 Duplex Steel flanges PN 400 are high-integrity blind flanges engineered for ultra-high-pressure systems where enhanced corrosion resistance, mechanical strength, and stress corrosion cracking resistance are crucial. These flanges are manufactured in compliance with the DIN 2627 standard and are used to seal the ends of piping systems operating under extreme conditions involving high pressure, temperature fluctuations, and aggressive media such as chlorides or acidic compounds. The PN 400 rating (400 bar / 5800 psi) ensures these flanges are suitable for the most demanding environments. Made from Duplex and Super Duplex stainless steels—such as Duplex 2205 (UNS S31803/S32205) and Super Duplex 2507 (UNS S32750)—they offer a unique combination of austenitic and ferritic microstructures, providing exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. Pressure Rating: • PN 400 (400 bar / 5800 psi): Designed for use in high-pressure systems where superior strength and corrosion resistance are required. Flange Type: • Blind Flanges Flat, solid flanges without a bore, used to seal off pipeline ends or nozzles for isolation, pressure testing, or future expansion. • Flat Face (FF) Flanges Feature a flat sealing surface suitable for use with full-face gaskets and flat-faced mating components to ensure uniform sealing under high-pressure conditions. Duplex Steel Grades and Composition: Duplex 2205 (UNS S31803 / S32205) • Chromium (Cr): 21 – 23% • Nickel (Ni): 4.5 – 6.5% • Molybdenum (Mo): 2.5 – 3.5% • Nitrogen (N): 0.08 – 0.2% • Iron (Fe): Balance Applications: High strength and excellent resistance to chloride-induced stress corrosion and pitting. Commonly used in chemical tanks, pipelines, and pressure vessels. Applications of DIN 2627 Duplex Steel Flanges PN 400: • Offshore and Subsea Oil & Gas Installations Withstand high pressure, chloride-rich environments, and dynamic loading in risers, manifolds, and subsea pipelines. • Desalination Plants and Seawater Systems Exceptional resistance to chloride-induced corrosion makes them ideal for seawater intake and brine discharge lines. • Chemical and Petrochemical Plants Used in corrosive process lines involving acids, solvents, and high-temperature hydrocarbons. • Pulp and Paper Industry Ideal for chemical recovery systems and chlorine dioxide bleaching where both corrosion and strength are essential. • Heat Exchangers and Pressure Vessels High strength and thermal fatigue resistance under cyclic temperature and pressure changes. • Power Generation and Nuclear Systems Effective in high-pressure steam and cooling systems where corrosion resistance and mechanical integrity are mandatory. Key Features: • Compliant with DIN 2627 specifications • PN 400 pressure rating for ultra-high-pressure applications • Blind flange configuration ensures secure system isolation • Flat face design supports full-face gasket usage for optimal sealing • Available in Duplex 2205 and Super Duplex 2507 • Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking • High mechanical strength with good weldability and fatigue resistance • Used across offshore, petrochemical, desalination, and energy sectors • Custom dimensions, materials, and finishes available upon request Conclusion: DIN 2627 Duplex Steel Flanges PN 400 from Ladhani Metal Corporation deliver unmatched reliability and performance in the harshest operating conditions. Whether used in high-pressure offshore pipelines or corrosive chemical systems, these flanges offer long-term sealing, structural integrity, and corrosion resistance. Reach out to Ladhani Metal Corporation for technical assistance, material selection, or customized Duplex flange solutions tailored to your operational demands.

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Monel Flanges

DIN 2627 Monel flanges PN 400 are high-performance blind flanges crafted for ultra-high-pressure systems where superior corrosion resistance, durability, and structural integrity are critical. Compliant with the DIN 2627 standard, these flanges are specifically designed to close off the ends of pipelines in extreme service environments, including highly corrosive marine atmospheres, acidic and alkaline chemical processes, and high-temperature applications. With a PN 400 rating (400 bar / 5800 psi), these flanges ensure leak-free operation under intense pressure and challenging conditions. Made from Monel alloys—primarily Monel 400 and Monel K500—these flanges are widely utilized in offshore oil rigs, naval applications, chemical processing, and power generation systems. Ladhani Metal Corporation is a global leader in manufacturing and exporting DIN-standard Monel flanges, ensuring compliance with international requirements for pressure containment, corrosion resistance, and metallurgical consistency. Pressure Rating: • PN 400 (400 bar / 5800 psi): Engineered for extremely high-pressure piping systems in critical and hazardous service environments where reliable sealing is essential. Flange Type: • Blind Flanges Solid, non-bored flanges used to seal piping systems or terminate flow paths. Ideal for pressure testing, system isolation, and future expansion. • Flat Face (FF) Flanges Designed with a flat sealing surface for use with full-face gaskets and flat mating components. Ensures uniform load distribution and optimal sealing performance. Monel Grades and Composition: Monel 400 (UNS N04400) • Nickel (Ni): ≥ 63% • Copper (Cu): 28 – 34% • Iron (Fe): ≤ 2.5% • Manganese (Mn): ≤ 2% • Silicon (Si): ≤ 0.5% • Carbon (C): ≤ 0.3% Applications: Outstanding resistance to seawater, hydrofluoric acid, alkalis, and other corrosive media. Widely used in marine equipment, chemical processing, and heat exchangers. Monel K500 (UNS N05500) • Nickel (Ni): ≥ 63% • Copper (Cu): 27 – 33% • Aluminum (Al): 2.3 – 3.15% • Titanium (Ti): 0.35 – 0.85% • Iron (Fe): ≤ 2% • Carbon (C): ≤ 0.25% Applications: Combines the corrosion resistance of Monel 400 with enhanced strength and hardness. Suitable for high-stress components like shafts, valve parts, and pump systems in corrosive environments. Applications of DIN 2627 Monel Flanges PN 400: • Offshore Oil and Gas Platforms Ideal for subsea systems exposed to high salinity, pressure, and corrosive gases such as hydrogen sulfide. • Marine and Shipbuilding Preferred in piping systems, ballast lines, and propulsion equipment exposed to seawater and biofouling agents. • Chemical and Petrochemical Plants Used in process systems handling caustic solutions, hydrofluoric acid, and strong alkalis at elevated pressures. • Heat Exchangers and Condensers Excellent thermal conductivity and corrosion resistance make Monel suitable for harsh thermal cycling conditions. • Nuclear and Power Generation Resilient in high-radiation and chemical-laden environments found in cooling systems and high-pressure steam lines. • Aerospace and Defense Used in fuel and hydraulic lines where strength and resistance to high-pressure corrosive media are critical. Key Features: • Manufactured according to DIN 2627 standards • Rated for PN 400 high-pressure operations • Blind flange design ensures reliable sealing and flow isolation • Flat face configuration for full-face gasket compatibility • Available in Monel 400 and Monel K500 grades • Exceptional resistance to corrosion by seawater, acids, and alkalis • High strength and durability in extreme service environments • Widely used in marine, chemical, nuclear, oil and gas, and aerospace industries • Custom configurations, sizes, and material options available on request Conclusion: DIN 2627 Monel Flanges PN 400 from Ladhani Metal Corporation are engineered for mission-critical applications where long-term durability, corrosion resistance, and high-pressure performance are mandatory. Whether you need protection against seawater, alkalis, or aggressive process chemicals, these flanges provide robust, leak-free service in the harshest operating environments. Contact Ladhani Metal Corporation for expert guidance, custom engineering, and dependable supply of Monel flange solutions tailored to your specific needs

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Inconel Flanges

DIN 2627 Inconel flanges PN 400 are premium-grade blind flanges engineered for ultra-high-pressure applications requiring exceptional corrosion resistance, heat resistance, and mechanical strength. Manufactured in accordance with the DIN 2627 standard, these flanges are designed to seal off the ends of piping systems, especially in extreme environments involving high temperatures, aggressive chemicals, or seawater exposure. The PN 400 rating (400 bar / 5800 psi) ensures performance under intense pressure conditions. Produced using high-performance nickel-based alloys such as Inconel 600, Inconel 625, and Inconel 718, these flanges are used extensively in aerospace, chemical processing, offshore oil and gas, marine, and power generation industries. Ladhani Metal Corporation is a leading global manufacturer and exporter of Inconel flanges, supplying components that conform to international standards for material integrity, pressure containment, and corrosion resistance. Pressure Rating: • PN 400 (400 bar / 5800 psi): Suitable for high-pressure piping systems in critical applications where maximum sealing and durability are essential. Flange Type: • Blind Flanges Solid, non-bored flanges used to isolate piping systems or terminate flow. Ideal for pressure testing, maintenance, and future pipeline expansions. • Flat Face (FF) Flanges Designed with a flat sealing surface for use with full-face gaskets and flat mating components, ensuring even load distribution and effective sealing. Inconel Grades and Composition: Inconel 600 (UNS N06600) • Nickel (Ni): ≥ 72% • Chromium (Cr): 14 – 17% • Iron (Fe): 6 – 10% • Manganese (Mn): ≤ 1% • Silicon (Si): ≤ 0.5% • Carbon (C): ≤ 0.15% • Sulfur (S): ≤ 0.015% Applications: Excellent resistance to oxidation, carburization, and chloride-ion stress corrosion cracking. Used in furnace components, heat exchangers, and food processing equipment. Inconel 625 (UNS N06625) • Nickel (Ni): ≥ 58% • Chromium (Cr): 20 – 23% • Molybdenum (Mo): 8 – 10% • Niobium + Tantalum (Nb + Ta): 3.15 – 4.15% • Iron (Fe): ≤ 5% • Carbon (C): ≤ 0.10% • Manganese (Mn): ≤ 0.5% • Silicon (Si): ≤ 0.5% Applications: Outstanding corrosion and fatigue resistance in seawater and chemical environments. Common in marine, aerospace, and offshore industries. Inconel 718 (UNS N07718) • Nickel (Ni): 50 – 55% • Chromium (Cr): 17 – 21% • Iron (Fe): Balance • Niobium + Tantalum (Nb + Ta): 4.75 – 5.5% • Molybdenum (Mo): 2.8 – 3.3% • Titanium (Ti): 0.65 – 1.15% • Aluminum (Al): 0.2 – 0.8% Applications: High strength and oxidation resistance up to 700°C. Used in jet engines, gas turbines, and high-pressure valves. Applications of DIN 2627 Inconel Flanges PN 400: • Offshore Oil and Gas Platforms Withstands high-pressure, high-salinity, and corrosive environments in subsea pipelines and risers. • Chemical Processing Plants Ideal for systems handling oxidizers, acids, solvents, and reactive compounds at high temperatures and pressures. • Aerospace and Jet Propulsion Used in fuel systems, hydraulic lines, and turbine enclosures where extreme heat and stress are common. • Nuclear and Power Generation Suited for high-pressure reactor lines and heat exchanger systems exposed to radiation, heat, and corrosive media. • Desalination and Seawater Systems Highly resistant to chloride-induced pitting and crevice corrosion. • High-Temperature and Reactive Media Systems Perfect for isolating systems exposed to thermal cycling and chemical attack. Key Features: • Manufactured to DIN 2627 standards • Rated for PN 400 ultra-high-pressure systems • Blind flange design for sealing pipe ends or testing access • Flat face design for even gasket compression and sealing • Available in Inconel 600, 625, and 718 • Excellent resistance to oxidation, acids, chlorides, and high heat • High mechanical strength and fatigue resistance • Used in critical industries including aerospace, marine, oil and gas, and chemical processing • Custom sizes, alloys, pressure ratings, and surface finishes available on request Conclusion: DIN 2627 Inconel Flanges PN 400 from Ladhani Metal Corporation offer exceptional performance and reliability in the most demanding service conditions. Whether your system involves corrosive chemicals, high-pressure steam, or marine exposure, these blind flanges deliver secure sealing, longevity, and safety. Contact Ladhani Metal Corporation for material selection, technical support, or custom solutions tailored to your high-performance application.

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Stainless Steel Flanges

DIN 2627 stainless steel flanges PN 400 are precision-engineered blind flanges manufactured according to the DIN 2627 standard. Designed to withstand ultra-high-pressure conditions up to 400 bar (5800 psi), these flanges are used to terminate or isolate piping systems safely and effectively. Fabricated from high-grade stainless steels, including 304, 316, and 321, these blind flanges provide superior mechanical strength, corrosion resistance, and long service life in aggressive industrial environments. Ladhani Metal Corporation is a globally recognized manufacturer and exporter of stainless steel flanges. Our DIN 2627 PN 400 blind flanges are widely trusted in sectors such as oil and gas, chemical processing, marine, energy, and high-pressure utility systems for their durability, quality, and performance under extreme conditions. Pressure Rating: • PN 400 (400 bar / 5800 psi): Suitable for high-pressure pipelines and critical systems where absolute sealing and structural integrity are required. Flange Type: • Blind Flanges Solid, non-bored flanges used to block pipeline ends or vessel nozzles. These flanges are essential for system isolation during maintenance, testing, or future expansions. • Flat Face (FF) Flanges Flat face flanges are designed to mate with flat gaskets and flat-faced components. They provide even gasket compression and are ideal when used with cast iron or brittle materials to avoid flange distortion. Stainless Steel Grades and Full Composition: Stainless Steel 304 • Chromium (Cr): 18.0 – 20.0% • Nickel (Ni): 8.0 – 10.5% • Carbon (C): ≤ 0.08% (304), ≤ 0.03% (304L) • Manganese (Mn): ≤ 2.0% • Silicon (Si): ≤ 1.0% • Phosphorus (P): ≤ 0.045% • Sulfur (S): ≤ 0.03% • Iron (Fe): Balance Applications: Excellent general corrosion resistance. Commonly used in food processing, water systems, and chemical equipment. Stainless Steel 316 • Chromium (Cr): 16.0 – 18.0% • Nickel (Ni): 10.0 – 14.0% • Molybdenum (Mo): 2.0 – 3.0% • Carbon (C): ≤ 0.08% (316), ≤ 0.03% (316L) • Manganese (Mn): ≤ 2.0% • Silicon (Si): ≤ 1.0% • Phosphorus (P): ≤ 0.045% • Sulfur (S): ≤ 0.03% • Iron (Fe): Balance Applications: Enhanced resistance to chlorides and acidic environments. Ideal for marine, pharmaceutical, and chemical processing. Stainless Steel 321 • Chromium (Cr): 17.0 – 19.0% • Nickel (Ni): 9.0 – 12.0% • Titanium (Ti): ≥ 5 × C (typically 0.20 – 0.70%) • Carbon (C): ≤ 0.08% • Manganese (Mn): ≤ 2.0% • Silicon (Si): ≤ 1.0% • Phosphorus (P): ≤ 0.045% • Sulfur (S): ≤ 0.03% • Iron (Fe): Balance Applications: 321 stainless steel is stabilized with titanium, providing excellent resistance to intergranular corrosion after welding and high-temperature exposure. Commonly used in thermal processing, aerospace, and exhaust systems. Applications of DIN 2627 Stainless Steel Flanges PN 400: • Oil and Gas Industry Used in upstream and downstream systems, where high pressure and harsh chemicals are common. • Chemical and Petrochemical Plants Ideal for isolating high-pressure lines carrying corrosive or reactive chemicals. • Marine and Offshore Engineering Suitable for saltwater-exposed piping, ballast systems, and underwater applications requiring corrosion resistance. • Power Generation Applied in steam, nuclear, and thermal plants for sealing pressurized piping and vessel systems. • Aerospace and High-Temperature Systems 321-grade blind flanges are used in systems exposed to elevated temperatures and thermal cycling. • Water Treatment and Desalination Withstands chloride-induced corrosion in high-pressure brine and filtration lines. Key Features: • Manufactured to DIN 2627 specifications • PN 400 pressure rating for extreme pressure performance • Blind flange design ideal for system isolation and termination • Available in stainless steel grades 304, 304L, 316, 316L, and 321 • Flat face type for even gasket compression and sealing integrity • Superior corrosion resistance and mechanical strength • Suitable for aggressive chemical, marine, and high-temperature environments • Custom sizes, surface finishes, and pressure classes available upon request Conclusion: DIN 2627 Stainless Steel Flanges PN 400 by Ladhani Metal Corporation are designed for maximum performance in high-pressure, corrosive, and high-temperature environments. With material options including 304, 316, and titanium-stabilized 321 stainless steel, these blind flanges offer flexibility, reliability, and long-term service life across critical industries. Contact Ladhani Metal Corporation today for technical assistance, specifications, or custom flange solutions.

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Duplex Flange

The DIN 2558 Duplex Flange PN 6 is a high-quality, precision-engineered piping component designed to deliver exceptional mechanical strength and corrosion resistance in harsh industrial environments. Manufactured to DIN (Deutsches Institut für Normung) standards, these flanges are produced using premium duplex stainless steels, which combine the benefits of both austenitic and ferritic stainless steels. Ladhani Metal Corporation supplies these flanges with a strong focus on durability, reliability, and performance under challenging operating conditions. Duplex flanges are widely used in industries such as oil and gas, petrochemical, marine, desalination, pulp and paper, and chemical processing—where resistance to stress corrosion cracking, pitting, and crevice corrosion is essential. The PN 6 pressure rating (6 bar or approximately 87 psi) makes these flanges suitable for medium-pressure systems that demand both structural integrity and long service life. Types: Weld Neck Flange – Provides a robust, welded connection ideal for high-stress, high-temperature applications. Slip-On Flange – Offers ease of installation and is welded on both the inner and outer surfaces for a secure fit. Blind Flange – Used to close the end of a pipe system, ensuring leak-tight sealing. Threaded Flange – Allows for easy, non-welded connection to piping systems with threaded ends. Socket Weld Flange – Ideal for smaller-diameter high-pressure lines, offering smooth flow and strong connections. Grades & Chemical Composition: Duplex 2205 (UNS S31803/S32205): Chromium (Cr): 21.0 – 23.0% Nickel (Ni): 4.5 – 6.5% Molybdenum (Mo): 2.5 – 3.5% Manganese (Mn): ≤ 2.0% Silicon (Si): ≤ 1.0% Nitrogen (N): 0.14 – 0.20% Carbon (C): ≤ 0.03% Iron (Fe): Balance Key Features: Excellent resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. Superior strength compared to standard stainless steels PN 6 Rating: The PN 6 rating signifies a nominal pressure capacity of 6 bar (approximately 87 psi), making these flanges suitable for medium-pressure applications in both industrial and marine systems where enhanced corrosion resistance and mechanical strength are required. Features: Corrosion Resistance: Excellent resistance to a wide range of corrosive environments, especially chlorides and sulfides. High Strength: Duplex steel offers nearly twice the strength of conventional austenitic stainless steel, reducing wall thickness and weight. Stress Corrosion Resistance: Ideal for applications involving aggressive media and fluctuating temperatures. Longevity: Designed to offer extended service life with minimal maintenance in severe environments. Versatile Use: Applicable in offshore platforms, chemical plants, desalination systems, and high-performance piping networks . Cost-Efficient: Combines strength and corrosion resistance, often allowing for reduced material thickness and overall system weight. Ladhani Metal Corporation ensures that each DIN 2558 Duplex Flange is precision-machined and rigorously tested to meet or exceed international standards. These flanges offer a reliable, leak-proof solution for critical piping systems, balancing performance, safety, and long-term value.

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stainless steel flange

DIN 2543 Stainless Steel Flanges are flanges made from stainless steel that conform to the German industrial standard DIN 2543. These flanges are used to connect pipes, valves, pumps, and other equipment within a piping system. The DIN 2543 standard defines the specifications, dimensions, and materials for flanges used primarily in industrial applications where high strength, durability, and corrosion resistance are required. DIN 2543 refers to the "Flanges for pipes, slip-on flanges, welding neck flanges, and blind flanges." DIN 2543 flanges are PN 16, and they have specific dimensional standards for that pressure rating, ensuring compatibility and safety in pipeline applications. Here's a detailed description of DIN 2543 Stainless Steel Flanges: 1. Standard Overview (DIN 2543): • DIN 2543 refers to flanges that are used to connect pipes and related components in various industrial systems. It specifies welding neck flanges, slip-on flanges, and blind flanges among others. • The flanges covered by this standard are available in different pressure classes and materials, including stainless steel. • The main application of these flanges is in piping systems for industries such as chemical, oil and gas, water treatment, food processing, and HVAC. 2. Types of DIN 2543 Flanges: The standard covers different types of flanges, each with its own application: • Welding Neck Flanges (WN): o These flanges are designed to be welded to the pipe. They have a long tapered neck that provides better stress distribution and is suitable for high-pressure applications. o Application: Common in high-pressure and high-temperature systems. • Slip-On Flanges (SO): o These flanges fit over the pipe and are welded at both the inside and outside edges. They are easier to install compared to welding neck flanges. o Application: Suitable for low- and medium-pressure systems. • Blind Flanges (BL): o These flanges are used to seal the end of a pipe. They have no central hole and are typically used to close off piping systems or for future extensions. o Application: Used when a permanent or temporary closure is needed in a piping system. 3. Materials for Stainless Steel Flanges: DIN 2543 Stainless Steel flanges are typically manufactured from the following grades of stainless steel, which are selected based on the specific requirements of the application: • Grade 304 Stainless Steel (AISI 304): o The most common type of stainless steel, offering good corrosion resistance and forming ability. It is suitable for general-purpose applications in environments not subject to severe corrosion. o Applications: Food and beverage processing, chemical industries, and general industrial applications. • Grade 316 Stainless Steel (AISI 316): o Contains molybdenum (2–3%), which significantly enhances its resistance to pitting and crevice corrosion in chloride environments. It is widely used in more corrosive environments such as marine or chemical processing applications. o Applications: Marine environments, chemical industries, pharmaceuticals, and offshore applications. • Grade 321 Stainless Steel (AISI 321): o Similar to 304 but with added titanium to prevent carbide precipitation during welding. It is ideal for high-temperature environments and offers good oxidation resistance. o Applications: High-temperature systems, aerospace applications, and heat exchangers. 4. Gasket Surface Types: The gasket surface of DIN 2543 stainless steel flanges is crucial for creating a proper seal when two flanges are joined. The most common gasket surface types include: • Raised Face (RF): o A flange with a raised area where the gasket is placed. This is the most common type and provides a reliable seal. • Flat Face (FF): o The flange surface is flat and typically used in lower-pressure systems. • Ring Type Joint (RTJ): o This type has a groove for the insertion of a metal ring gasket, used in high-pressure or high-temperature applications. DIN 2543 SS flanges are designed to provide strong, durable, and leak-proof connections for pipes in various industries, with precise dimensions, materials, and pressure ratings tailored to different operational needs. The different types of flanges (Slip-on, Welding Neck, and Blind) allow for versatile use in a variety of applications.

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blind flanges

DIN 2527 blind flanges are sealing components used in piping systems to close the ends of pipes, valves, or pressure vessels where no further connection is required. These flanges are designed to prevent the flow of fluids or gases, isolate sections of the piping system for maintenance, or facilitate pressure testing of the system. The DIN 2527 standard ensures these flanges meet specific dimensional and mechanical properties for reliable performance in various industrial applications. material type : Titanium: Titanium flanges, including Grade 2 and Grade 5, are known for their exceptional resistance to corrosion, particularly in aggressive environments like seawater and chemicals. These lightweight and strong materials are commonly used in aerospace, marine, and chemical industries. Stainless Steel (SS): Stainless steel, including grades like 304 and 316, provides excellent corrosion resistance, particularly in harsh environments. It is used in industries like chemical processing and marine applications, where resistance to corrosion and oxidation is essential. Carbon Steel (C.S.): Carbon steel is a popular choice for DIN 2527 blind flanges due to its strength, weldability, and cost-effectiveness. It is ideal for general-purpose applications in systems with moderate temperature and pressure conditions, using grades like St 37 and A105. Mild Steel (MS): Mild steel is a low-carbon steel that offers good formability and strength, making it suitable for less demanding applications. It is commonly used in systems where high pressure or corrosion resistance is not a critical concern. Alloy Steel: Alloy steel flanges, such as A182 F11 and A182 F22, are designed for high-temperature and high-pressure applications. They offer greater strength, thermal expansion resistance, and durability, making them ideal for power generation and petrochemical industries. Inconel: Inconel flanges, including Inconel 600 and 625, are ideal for extreme high-temperature and aggressive environments. These alloys provide superior strength and exceptional resistance to oxidation and corrosion, making them suitable for high-performance applications. SS Duplex Steel: Duplex steel, such as grade 2205, combines the characteristics of both austenitic and ferritic steels, offering high strength and superior resistance to corrosion. It is ideal for use in chemical and marine environments where stress corrosion cracking resistance is crucial. SS Super Duplex Steel: Super duplex steel, such as 2507, provides a combination of high strength and excellent corrosion resistance, especially in harsh environments. It is highly resistant to pitting and stress corrosion cracking, making it ideal for demanding applications in the oil, gas, and marine industries. Key Features of DIN 2527 Blind Flanges: Material Variety: DIN 2527 blind flanges are available in different materials, including carbon steel, mild steel, stainless steel, alloy steel, and special alloys like Inconel or Duplex steel, offering a wide range of options to meet the needs of different environments, temperatures, and pressures. Pressure and Temperature Ratings: These flanges are available in different pressure ratings such as PN6, PN10, PN16, PN25, and PN40, ensuring they can withstand the required pressures for various industrial applications. Dimensional Standards: The DIN 2527 standard ensures precise dimensional accuracy, allowing for reliable sealing and easy installation in piping systems. These flanges are available in various nominal diameters, typically ranging from DN10 (1/2 inch) to DN600 (24 inches) or more, depending on the system requirements.

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carbon steel blind flange

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.

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blind flanges

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.

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