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.

What is a Half Round Tube Shield? A Half Round Tube Shield is a specially designed metal cover that fits over the external curvature of tubes or pipes. It is commonly used in boilers, heat exchangers, and various high-temperature piping systems to prevent damage caused by erosion, corrosion, high-velocity gas flow, and thermal fatigue. These shields serve as a first line of defense by absorbing mechanical and chemical wear, thereby significantly extending the life of the underlying tubes. Tube shields are essential in high-stress areas where exposure to combustion gases, ash particles, or high-velocity steam can quickly degrade unprotected surfaces. By preventing direct impact on the base metal, they help reduce operational downtime, lower maintenance costs, and prevent unexpected system failures. In boiler systems, tube shields are especially important to avoid tube thinning and ruptures, ensuring safer and more efficient operation. Product Overview At Ladhani Metal Corporation, we manufacture and supply premium-quality Half Round Tube Shields for a wide range of industrial applications. Our products are known for their dimensional accuracy, durability, and superior resistance to wear and corrosion. Designed for harsh operating environments, our tube shields can be customized in terms of thickness, radius, length, and grade to suit specific operating requirements. Whether you require protection for straight tubes, bends, or special boiler tube configurations, we have a solution tailored for you. Available Grades We manufacture Half Round Tube Shields using high-performance stainless steel and alloy steel grades that are selected based on their mechanical strength, temperature tolerance, and corrosion resistance. Stainless Steel Grades: • SS 304, SS 304L • SS 316, SS 316L • SS 310, SS 310S • SS 410, SS 420, SS 430 Heat-Resistant & Alloy Steel Grades: • 1Cr18Ni9Ti • Cr25Ni20 • 1Cr25Ni20Si2 • Cr23Ni13 • 1Cr20Ni14Si2 • 1Cr13 These materials ensure the shields can withstand aggressive media, thermal cycling, and high-velocity particulate flow without cracking or deforming over time. Types of Half Round Tube Shields We offer various forms of Half Round Tube Shields to match different tube geometries and boiler configurations: • U-Type Half Round Tube Shield Designed to cover both the top and sides of the tube, offering extended protection in U-bend areas where wear is most common. • U-Type Outer Half Round Tube Shield Specifically shaped to shield the outer curvature of U-bend tubes, ideal for areas exposed to direct flame or gas flow. • U-Type Inner Half Round Tube Shield Fits the inner curvature of U-bend tubes to protect against erosion caused by high-velocity media turning around the bend. • Half Round Tube Shield for LTSH Type Custom-made to fit tubes in Low Temperature Super Heater (LTSH) sections, providing protection from ash and flue gases. • Half Round Straight Tube Shield Standard half-round shields used for straight tube sections, offering easy installation and effective protection. • Half Round Tube Shield for R/H Tube Designed for Reheater (R/H) tubes, typically found in high-temperature zones; made from heat-resistant materials. • Half Round Shield for Tube A general-purpose shield suitable for various industrial tubes requiring surface protection. • Half Round Tube Shield for WW Screen Engineered to fit water wall screen tubes, protecting against slagging and high radiant heat. • Half Round Tube Shield for Boiler Tube Specifically designed for boiler applications, these shields reduce wear cau Each type is designed for easy integration into existing boiler or piping systems, whether for repair, reinforcement, or preventive maintenance. Key Features ✔ High Durability – Effectively resists erosion, mechanical abrasion, scaling, and chemical attack ✔ Accurate Half-Round Fit – Custom-formed to ensure close contact and full protection of tube surface ✔ Weld-On or Clip-On Installation – Offers flexibility based on site requirements and installation methods ✔ Custom Sizes Available – Tailored to meet specific pipe diameters, wall thicknesses, and operating conditions ✔ Corrosion & Heat Resistance – Performs reliably under prolonged exposure to high temperatures and corrosive flue gases Conclusion Half Round Tube Shields by Ladhani Metal Corporation provide robust protection for critical tubing in boilers, heat exchangers, and high-temperature piping systems. Manufactured with a focus on performance, longevity, and ease of installation, these shields are a dependable solution for industrial operators aiming to enhance system reliability and reduce unplanned maintenance. 📩 Get in touch with us today for customized solutions, bulk order pricing, or technical consultations tailored to your specific industry requirements.

DIN 2628 Inconel flanges PN 250 are high-strength weld neck flanges manufactured in accordance with the DIN 2628 standard. Designed to operate in high-pressure systems up to 250 bar (3625 psi), these flanges offer outstanding performance in extreme environments involving high temperatures, corrosive chemicals, and mechanical stress. Made from Inconel superalloys, they provide excellent resistance to oxidation, thermal fatigue, and pitting, making them ideal for critical applications in demanding industries. Ladhani Metal Corporation is a globally trusted manufacturer and exporter of premium Inconel flanges. Our DIN 2628 PN 250 Inconel weld neck flanges are widely used in sectors such as chemical processing, offshore drilling, aerospace, power generation, and marine engineering. Known for precision engineering, reliability, and resistance to harsh service conditions, these flanges are a preferred choice in pressure-intensive and corrosion-prone systems. Pressure Rating: • PN 250 (250 bar / 3625 psi): Suitable for high-pressure pipelines requiring superior sealing, thermal resistance, and structural integrity. Flange Type: • Weld Neck Flanges Designed with a tapered hub to reduce stress concentration at the weld point. Ideal for high-pressure and high-temperature environments. • Flat Face (FF) Flanges Flat face design ensures even gasket compression, preventing flange warping and providing secure sealing, especially when used with cast or brittle materials. Inconel Grades and Composition: Inconel 600 (UNS N06600) • Nickel (Ni): ≥ 72.0% • Chromium (Cr): 14.0 – 17.0% • Iron (Fe): 6.0 – 10.0% • Carbon (C): ≤ 0.15% • Manganese (Mn): ≤ 1.0% • Silicon (Si): ≤ 0.5% Applications: Excellent resistance to heat and corrosion by acids and chlorides. Commonly used in heat exchangers, reactors, and high-temperature furnace parts. Inconel 625 (UNS N06625) • Nickel (Ni): ≥ 58.0% • Chromium (Cr): 20.0 – 23.0% • Molybdenum (Mo): 8.0 – 10.0% • Niobium (Nb) + Tantalum (Ta): 3.15 – 4.15% • Iron (Fe): ≤ 5.0% • Carbon (C): ≤ 0.10% • Manganese (Mn): ≤ 0.50% • Silicon (Si): ≤ 0.50% Applications: Exceptional corrosion resistance in chloride-bearing environments. Ideal for offshore oil and gas, marine exhaust systems, and chemical plants. Inconel 718 (UNS N07718) • Nickel (Ni): 50.0 – 55.0% • Chromium (Cr): 17.0 – 21.0% • Iron (Fe): Balance • Niobium (Nb) + Tantalum (Ta): 4.75 – 5.50% • Molybdenum (Mo): 2.80 – 3.30% • Titanium (Ti): 0.65 – 1.15% • Aluminum (Al): 0.20 – 0.80% • Carbon (C): ≤ 0.08% Applications: A precipitation-hardened superalloy with outstanding strength, creep resistance, and corrosion resistance at temperatures up to 700°C. Widely used in aerospace turbine engines, nuclear reactors, and high-pressure chemical systems. Applications of DIN 2628 Inconel Flanges PN 250: • Chemical and Petrochemical Plants Ideal for piping systems exposed to aggressive chemicals, high pressures, and temperature fluctuations. • Power Generation Used in nuclear, thermal, and gas-fired power plants where heat and pressure resistance are critical. • Aerospace and Jet Engine Systems 718-grade flanges are suitable for turbine casings, fuel lines, and other high-temperature aircraft components. • Marine and Offshore Engineering Highly corrosion-resistant in saltwater environments, suitable for subsea manifolds, pipelines, and ballast systems. • Heat Treatment and Thermal Processing Used in furnaces, reactors, and pressure vessels subjected to rapid thermal cycling and oxidation. Key Features: • Manufactured according to DIN 2628 standards • PN 250 pressure rating for high-pressure system integrity • Weld neck design ensures optimal strength and flow performance • Available in Inconel 600, 625, and 718 grades • Flat face option for uniform sealing and safety in brittle systems • Excellent resistance to high temperatures, oxidation, and chlorides • Suitable for extreme chemical, thermal, and marine environments • Custom sizes, pressure classes, and finishes available upon request Conclusion: DIN 2628 Inconel Flanges PN 250 from Ladhani Metal Corporation offer the ideal solution for industries demanding high-performance materials under extreme conditions. With options in Inconel 600, 625, and 718, these weld neck flanges combine corrosion resistance, strength, and thermal stability for reliable operation across a wide range of high-pressure applications. Contact Ladhani Metal Corporation for detailed specifications, technical assistance, or to request a tailored quotation.

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.

DIN 2543 Monel Flanges are flanges made from Monel, a group of nickel-copper alloys that are known for their excellent corrosion resistance, particularly in marine environments and chemical processing industries. Monel alloys are also highly resistant to acidic and alkaline conditions, which makes them ideal for applications in harsh environments. Material: Typically made from Monel 400 or Monel K-500, which are the most common grades of Monel alloys. Pressure Rating (PN16): Rated for 16 bar (approximately 232 psi) at 20°C (68°F), suitable for medium-pressure systems. Key Features of DIN 2543 Monel Flanges: Corrosion Resistance: Monel alloys, especially Monel 400, are highly resistant to corrosion, including in seawater, acids, and alkaline solutions. This makes them ideal for use in marine, chemical, and offshore oil environments. Strength and Durability: Monel alloys offer high strength and excellent tensile strength even at elevated temperatures. The materials maintain their integrity and resilience in harsh environments, ensuring long-term durability. Weldability: Monel alloys are weldable, but care must be taken during the welding process to ensure that there is no loss of material properties. Proper heat treatment may be required to maintain corrosion resistance and strength. Temperature Resistance: Monel alloys have excellent performance at both high and low temperatures. They can be used in a wide range of environments, including cryogenic temperatures and elevated heat applications. Types of Monel Flanges (DIN 2543): Weld Neck Flanges (WN): These flanges have a tapered neck, which is welded to the pipe. This provides additional strength and is used in applications that require high pressure or high-temperature resistance. Slip-On Flanges (SO): These flanges slide over the pipe and are welded both inside and outside. They are easy to install and commonly used in medium-pressure systems. Blind Flanges (BL): These flanges are used to seal the end of a piping system. They prevent fluid flow and are typically used in applications where future maintenance or modifications may be required. Socket Weld Flanges (SW): These flanges have a socket in which the pipe is inserted and welded. This type is used for small-bore applications in high-pressure systems. Lap Joint Flanges (LJ): These flanges are used with a lap joint stub end and are ideal for systems that require easy alignment and disassembly. They are often used in applications where frequent maintenance is necessary. Common Monel Grades for DIN 2543 Flanges: Monel 400: Composition: Approximately 63% nickel, 29% copper, with small amounts of iron, manganese, and silicon. Properties: Exceptional resistance to corrosion, especially in seawater and other marine environments. Excellent resistance to acids and alkalines, making it suitable for chemical processing applications. High tensile strength and good mechanical properties at both high and low temperatures. Monel K-500: Composition: Similar to Monel 400, but with additional aluminum and titanium, which provide higher strength and greater resistance to corrosion. Pressure Rating (PN16): PN16 refers to the pressure rating of 16 bar (approximately 232 psi) at 20°C (68°F).

DIN 2543 Inconel Flanges are flanges made from Inconel, a group of nickel-chromium superalloys known for their excellent corrosion resistance, high strength, and ability to withstand high temperatures. These flanges are often used in extreme environments where both heat resistance and corrosion resistance are required, such as in aerospace, chemical processing, and power generation industries. Material: Typically made from Inconel alloys, most commonly Inconel 600, Inconel 625, and Inconel 718. Pressure Rating (PN16): Rated for 16 bar (approx. 232 psi) at 20°C (68°F), making them suitable for medium-pressure applications. Key Features of DIN 2543 Inconel Flanges: Corrosion Resistance: Inconel alloys offer excellent resistance to corrosion, particularly in high-temperature environments. High-Temperature Strength: Inconel flanges maintain their strength even at high temperatures (up to around 1000°C/1832°F), which makes them well-suited for use in gas turbines, furnaces, and heat exchangers. Durability: Inconel materials are designed to provide long-lasting durability under high-stress and high-temperature conditions, even in aggressive corrosive environments. Weldability: Inconel alloys are generally weldable, though careful attention must be given to the welding process to avoid any cracking or other issues associated with high-temperature alloys. Types of Inconel Flanges (DIN 2543): Weld Neck Flanges (WN): These flanges have a long neck that provides additional strength by allowing for a strong weld between the flange and the pipe. Ideal for high-pressure and high-temperature systems. Slip-On Flanges (SO): These flanges slide over the pipe and are welded inside and outside. They are easy to install and are commonly used in medium-pressure applications. Blind Flanges (BL): Used to seal the end of a piping system, preventing the flow of fluids. These flanges do not have a hole in the center. Socket Weld Flanges (SW): These flanges have a socket for the pipe to fit into, which is then welded. They are used in small-bore systems where high-pressure conditions are present. Lap Joint Flanges (LJ): These flanges are paired with a lap joint stub end. They allow easy alignment and disassembly, making them ideal for systems that require frequent maintenance. Common Inconel Grades for DIN 2543 Flanges: Inconel 600: Composition: Approximately 72% nickel, 14-17% chromium, and 6-10% iron. Properties: Excellent resistance to oxidation and corrosion at high temperatures, especially in sulfuric acid and chloride environments. Inconel 625: Composition: Approximately 58% nickel, 22% chromium, and 9% molybdenum. Properties: Outstanding resistance to both high temperatures and a wide range of corrosive environments, including seawater, acids, and oxidizing environments. Inconel 718: Composition: Approximately 50-55% nickel, 17-21% chromium, and 4-5% molybdenum. Properties: Known for its high strength and resistance to heat, oxidation, and corrosion, especially in high-temperature environments. Pressure Rating (PN16): PN16 refers to the pressure rating of 16 bar (approx. 232 psi) at 20°C (68°F). #flanges #din2543 #din2543inconelflanges #inconelflanges

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.

Product Name: Grade 2 titanium welding wire Standard: AWS A5.16 Material: Grade 2 (ERTi-2) Unit Price: $21.5usd/kg-$60usd/kg Shape: Straight, Spool, Coil Diameter: 0.8mm/1mm/1.2mm/1.6mm/2mm/2.4mm/3mm/3.2mm etc. Grade 2 titanium welding wire Standard: AWS A5.16 Material: Grade 2 (ERTi-2) Unit Price: $21.5usd/kg-$60usd/kg Shape: Straight, Spool, Coil Diameter: 0.8mm/1mm/1.2mm/1.6mm/2mm/2.4mm/3mm/3.2mm etc. Surface: Bright Chemical composition (Wt%) ASTM No. Fe max O max N max C max H max Pd Al Bal Grade 2 0.3 0.25 0.03 0.1 0.015 - - Ti Physical Properties (Min) ASTM Grade Alloy Composition Tensile Strength Yield Strength Elongation min % ksi Mpa ksi Mpa Grade 2 Unalloyed Ti ("Pure") 50A -CP2 58 400 40 275 25 Features of our company's titanium welding wire: 　　1. Manufactured by a non-oxidized roll mold cold drawing process 　　2, the welding wire has uniform structure and fine grains 　　3, high dimensional accuracy, no defects, excellent follow-up processing performance 　　4, the composition of various elements in the material and the mechanical properties of the material can be effectively controlled