DIN 2633 duplex steel flanges PN 16 are precision-manufactured weld neck flanges designed according to the DIN 2633 standard, ideal for medium-pressure piping systems operating up to 16 bar (232 psi). These flanges are crafted from duplex stainless steels that combine the benefits of austenitic and ferritic microstructures, offering excellent mechanical strength, superior resistance to stress corrosion cracking, and enhanced durability in aggressive chemical and chloride-containing environments. They are ideal for applications where both corrosion resistance and high strength are essential. Ladhani Metal Corporation is a leading global manufacturer and supplier of duplex steel flanges, recognized for high-quality production, dimensional accuracy, and strict compliance with international standards. All flanges undergo rigorous inspection and testing to ensure reliable performance in challenging industrial conditions. Pressure Rating: • PN 16 (16 bar / 232 psi): Suitable for medium-pressure pipelines requiring corrosion resistance and increased mechanical integrity. Flange Type: • Weld Neck Flanges These flanges feature a long tapered hub for improved flow characteristics and reduced mechanical stress at the weld area, ensuring stable and secure connections. • Flat Face (FF) Flanges Designed to provide a consistent sealing surface, especially effective when used with soft gaskets or when connecting to cast components. Duplex Steel Grades and Full Composition: Duplex 2205 (UNS S31803/S32205) • Chromium (Cr): 21.0 – 23.0% • Nickel (Ni): 4.5 – 6.5% • Molybdenum (Mo): 2.5 – 3.5% • Nitrogen (N): 0.08 – 0.20% • Manganese (Mn): ≤ 2.0% • Silicon (Si): ≤ 1.0% • Carbon (C): ≤ 0.03% • Phosphorus (P): ≤ 0.03% • Sulfur (S): ≤ 0.02% • Iron (Fe): Balance Applications: Widely used in desalination plants, chemical process vessels, marine environments, and pulp and paper industries due to high strength and resistance to localized corrosion. Super Duplex 2507 (UNS S32750) • Chromium (Cr): 24.0 – 26.0% • Nickel (Ni): 6.0 – 8.0% • Molybdenum (Mo): 3.0 – 5.0% • Nitrogen (N): 0.24 – 0.32% • Manganese (Mn): ≤ 1.2% • Silicon (Si): ≤ 0.8% • Carbon (C): ≤ 0.03% • Phosphorus (P): ≤ 0.035% • Sulfur (S): ≤ 0.02% • Iron (Fe): Balance Applications: Preferred in highly corrosive offshore, oil and gas, chemical, and high-chloride environments where superior strength and corrosion resistance are essential. Applications of DIN 2633 Duplex Steel Flanges PN 16: • Chemical and Petrochemical Plants Provides strong and corrosion-resistant connections for chemical reactors, storage tanks, and acid-handling systems. • Marine and Offshore Engineering Suitable for submerged systems, seawater cooling, and ballast water piping due to excellent resistance to chloride-induced corrosion. • Pulp and Paper Industry Performs reliably in bleaching and chemical recovery processes where both chemical resistance and strength are required. • Desalination and Water Treatment Ideal for high-salinity water systems and reverse osmosis pipelines requiring durable, corrosion-resistant components. • Oil and Gas Refineries Used in pipelines, pressure vessels, and heat exchangers subjected to sour gas and high-pressure operating environments. Key Features: • Manufactured to DIN 2633 standard • PN 16 pressure class for medium-pressure service • Weld neck configuration supports vibration resistance and proper alignment • Available in Duplex 2205 and Super Duplex 2507 grades • High resistance to stress corrosion cracking, pitting, and crevice corrosion • Excellent mechanical strength and fatigue resistance • Custom sizes, finishes, and specifications available upon request Conclusion: DIN 2633 duplex steel flanges PN 16 from Ladhani Metal Corporation offer an optimal combination of strength, corrosion resistance, and reliability for use in harsh industrial conditions. With high-performance duplex and super duplex materials, these flanges are the preferred choice for applications in chemical processing, offshore platforms, and desalination plants. For detailed technical support, customized configurations, or pricing, contact Ladhani Metal Corporation today.

DIN 2628 Duplex steel flanges PN 250 are high-strength weld neck flanges designed according to the DIN 2628 standard for use in high-pressure systems up to 250 bar (3625 psi). Fabricated from Duplex stainless steels, these flanges offer an ideal balance of strength and corrosion resistance, combining the beneficial properties of both austenitic and ferritic stainless steels. Their robust mechanical performance, excellent resistance to stress corrosion cracking, and superior weldability make them well-suited for critical applications in aggressive service environments. Ladhani Metal Corporation manufactures and exports premium-grade Duplex steel flanges that meet stringent international standards for quality, reliability, and performance. Our DIN 2628 PN 250 Duplex steel weld neck flanges are widely used in sectors such as oil and gas, desalination, petrochemical processing, pulp and paper, and marine industries. With precision engineering and consistent quality, these flanges are designed to withstand high pressure, corrosive media, and mechanical stress. Pressure Rating: • PN 250 (250 bar / 3625 psi): Suitable for high-pressure systems requiring excellent structural integrity, corrosion resistance, and reliable sealing in dynamic conditions. Flange Type: • Weld Neck Flanges These flanges feature a tapered neck, offering high fatigue resistance by reducing stress concentration at the weld area. Ideal for applications with high pressure, high temperature, or repeated thermal cycling. • Flat Face (FF) Flanges Flat face design provides uniform gasket loading, minimizing the risk of flange deformation. Suitable for systems using brittle materials or low-pressure cast components. Duplex Steel Grades and Composition: Duplex 2205 (UNS S32205 / S31803) • Chromium (Cr): 21.0 – 23.0% • Nickel (Ni): 4.5 – 6.5% • Molybdenum (Mo): 2.5 – 3.5% • Nitrogen (N): 0.14 – 0.20% • Iron (Fe): Balance • Manganese (Mn): ≤ 2.0% • Silicon (Si): ≤ 1.0% • Carbon (C): ≤ 0.03% Applications: Offers excellent corrosion resistance, particularly to chloride-induced stress corrosion cracking and pitting. Commonly used in offshore oil rigs, chemical tanks, heat exchangers, and pressure vessels. Applications of DIN 2628 Duplex Steel Flanges PN 250: • Oil and Gas Exploration Resistant to sour gas, chloride attack, and high mechanical loads in subsea and topside environments. • Chemical Processing Plants Used in aggressive chemical systems, reactors, and storage vessels requiring high corrosion resistance. • Marine and Offshore Structures Reliable in saltwater applications, such as ballast systems, risers, and flowlines. • Pulp and Paper Industry Withstands acidic and alkaline process chemicals used in bleaching and pulping operations. • Water Treatment and Desalination Ideal for handling brine and high-chloride content fluids in RO and thermal desalination systems. Key Features: • Conforms to DIN 2628 standards • PN 250 pressure rating for high-pressure, heavy-duty systems • Weld neck configuration for excellent mechanical support and minimal stress concentration • Flat face variant ensures even gasket loading and leak-proof operation • Available in Duplex 2205 and Super Duplex 2507 grades • Excellent resistance to chloride stress corrosion, pitting, and crevice corrosion • High tensile and yield strength for demanding industrial conditions • Custom sizes, pressure ratings, and surface finishes available upon request Conclusion: DIN 2628 Duplex Steel Flanges PN 250 from Ladhani Metal Corporation are the optimal solution for applications requiring superior corrosion resistance, high mechanical strength, and reliable sealing performance under extreme pressure. Available in Duplex 2205 and Super Duplex 2507, these flanges offer outstanding performance across various aggressive industrial environments. For detailed technical specifications or to request a customized quotation, please contact Ladhani Metal Corporation.

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.

Ladhani Metal Corporation is a leading manufacturer and exporter of DIN 2565 duplex flanges, designed for reliable, high-strength connections in low-pressure piping systems. Manufactured in accordance with DIN 2565 standards and typically offered with a PN 6 pressure rating, these flanges are ideal for threaded pipe joints where welding is not required. Duplex flanges are crafted from duplex stainless steel, known for its dual-phase microstructure that combines the strength of ferritic steel with the corrosion resistance of austenitic steel. This makes them an excellent choice for applications where both mechanical performance and resistance to harsh environments are critical. Flange Types: • Threaded (Screwed) Flanges: Designed for easy installation and disassembly without welding, suitable for systems requiring frequent maintenance. • Raised Face (RF) Flanges: Enhances gasket sealing capabilities, ensuring leak-proof performance in pressurized systems. • Flat Face (FF) Flanges: Commonly used in low-pressure piping systems, especially with non-metallic gaskets. • Forged Threaded Flanges: Manufactured through forging for improved toughness, impact resistance, and pressure-handling capabilities. Duplex Steel Grades and Composition: Duplex 2205 (UNS S31803 / S32205) o Chromium (Cr): 22.0 – 23.0% o Nickel (Ni): 4.5 – 6.5% o Molybdenum (Mo): 3.0 – 3.5% o Nitrogen (N): 0.14 – 0.20% o Iron (Fe): Balance Applications: Ideal for chemical processing, marine applications, and high-chloride environments due to excellent pitting and crevice corrosion resistance. Applications of DIN 2565 Duplex Flanges: • Chemical and Petrochemical Industries: Withstand acidic and chloride-rich environments. • Marine and Offshore Structures: Resistant to seawater corrosion and stress corrosion cracking. • Oil & Gas Industry: Used in pressure vessels, heat exchangers, and subsea pipelines. • Pulp and Paper Industry: Excellent resistance to sulfide and chloride attack. • Desalination Plants: Long-lasting performance in salt-heavy environments. Key Features: • Compliant with DIN 2565 standard and PN 6 pressure rating • Superior strength and stress resistance compared to standard stainless steels • Excellent resistance to pitting, crevice, and stress corrosion cracking • Available in Duplex 2205 and Super Duplex 2507 grades • Delivered with full traceability and third-party inspection certificates Conclusion: DIN 2565 duplex flanges from Ladhani Metal Corporation are engineered for optimal performance in environments demanding both strength and corrosion resistance. Their robust construction, advanced metallurgy, and precise engineering make them ideal for industries where reliability and safety are paramount. For technical specifications, pricing, or bulk order inquiries, reach out to Ladhani Metal Corporation today.

DIN 2545 Super Duplex flanges are specifically designed to offer outstanding strength and resistance to corrosion, especially in highly aggressive environments. Ladhani Metal Corporation supplies these high-performance flanges made from super duplex stainless steel, combining the advantages of both austenitic and ferritic structures to achieve superior mechanical properties and exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking. With a pressure rating of PN 40, these flanges can withstand pressures up to 40 bar, ensuring reliable and safe performance in demanding applications such as offshore oil and gas, chemical processing, and marine industries. Types of DIN 2545 Super Duplex Flanges: Flat Face Flanges (FF) – These flanges have a flat sealing surface, suitable for low-pressure systems where uniform distribution of sealing force is needed. Raised Face Flanges (RF) – These flanges feature a raised area around the bolt holes, providing higher sealing pressure and better performance in higher-pressure environments. Ring-Type Joint (RTJ) Flanges – Designed with a groove to accommodate a metal sealing ring, these flanges are ideal for use in high-pressure and high-temperature systems. Grades and Chemical Composition: Super Duplex 2507 (UNS S32750) Chemical Composition: Chromium (Cr): 25% Nickel (Ni): 7% Molybdenum (Mo): 4% Nitrogen (N): 0.27% Iron (Fe): Balance This composition provides a remarkable combination of properties: Corrosion Resistance: Excellent protection against pitting, crevice corrosion, and stress corrosion cracking, even in environments containing chlorides or other aggressive chemicals. High Strength: The high molybdenum and nitrogen content enhance both the strength and corrosion resistance of the material, making it ideal for applications in highly corrosive, high-pressure environments. Ductility and Toughness: Despite its high strength, Super Duplex 2507 maintains good ductility, which is crucial Super Duplex 2507 is a high-alloy material known for its exceptional resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. It is used in the most demanding applications, including offshore and subsea oil and gas, where high pressures and harsh environments are common. The enhanced molybdenum and nitrogen content provide superior mechanical strength and corrosion resistance. PN 40 Pressure Rating: The "PN" rating indicates the flange's pressure capacity. With PN 40, the flange is rated to handle pressures up to 40 bar, making it suitable for high-pressure applications where reliability and leak-free connections are essential. Applications: DIN 2545 Super Duplex flanges with PN 40 are widely used in industries that require superior performance under extreme conditions. Common applications include: Oil and Gas Industry: Offshore Platforms and Subsea Pipelines: Super duplex flanges are commonly used in offshore oil and gas platforms where exposure to seawater and harsh conditions requires materials with superior resistance to corrosion. Downhole Equipment: These flanges are ideal for equipment used in oil extraction, such as wellhead connections, blowout preventers, and pipeline systems under high pressure. Chemical and Petrochemical Industry: High-Pressure Reactors and Heat Exchangers: Super duplex flanges are essential in systems handling aggressive chemicals, such as acids, alkalis, and chloride-containing compounds, where both high strength and corrosion resistance are critical. Pipelines for Petrochemical Transport: Used in the transportation of petrochemicals and refined products, offering durability against corrosive chemicals and high temperatures. Marine and Offshore Applications: Seawater Cooling Systems: The excellent corrosion resistance of super duplex steel makes these flanges ideal for marine cooling systems, including seawater pumps and piping systems on ships and offshore platforms. Desalination Plants: Super duplex flanges are used in seawater desalination systems, where they help resist the corrosive effects of saltwater. Power Generation Industry: Nuclear and Fossil Fuel Plants: Super duplex flanges are employed in high-pressure steam lines, cooling systems, and heat exchangers where both strength and resistance to corrosion and erosion are necessary. Geothermal Energy Systems: Used in geothermal plants where high-temperature, aggressive fluids may cause corrosion, super duplex flanges ensure long-lasting performance. Conclusion: Ladhani Metal Corporation ensures that each Super Duplex flange meets stringent quality standards and is manufactured to exact specifications, ensuring durability and long-lasting performance in the most challenging environments. #din2545 #din2545flanges #din2545superduplexflanges #flanges

DIN 2545 duplex flanges are designed to provide exceptional strength and corrosion resistance in demanding industrial applications. Ladhani Metal Corporation offers these high-quality flanges made from duplex stainless steel, which combines the best features of both austenitic and ferritic structures. This unique material provides superior resistance to pitting, crevice corrosion, and stress corrosion cracking, making it ideal for use in harsh environments. With a pressure rating of PN 40, these flanges are capable of handling pressures up to 40 bar, ensuring safe and reliable performance in industries such as chemical processing, oil and gas, marine, and offshore platforms. Types of DIN 2545 Duplex Flanges: Flat Face Flanges (FF) – These flanges have a flat surface that facilitates a uniform distribution of the sealing force, making them ideal for low-pressure applications or systems where a secure seal is essential. Raised Face Flanges (RF) – Featuring a raised face around the bolt holes, these flanges provide a higher sealing pressure, ensuring a more reliable seal, especially in higher-pressure environments. Ring-Type Joint (RTJ) Flanges – Designed with a groove for a metal sealing ring, these flanges are suitable for use in applications requiring high pressure and high temperature resistance. Grades and Chemical Composition: -Duplex 2205 (UNS S32205) Chemical Composition: Cr: 22%, Ni: 5-6%, Mo: 3%, N: 0.14-0.2%, Fe: balance Duplex 2205 is the most common duplex stainless steel grade. It offers excellent corrosion resistance in chloride environments, making it suitable for applications like seawater, chemical, and petrochemical processing. The combination of austenitic and ferritic phases gives Duplex 2205 higher strength compared to austenitic stainless steels, along with improved resistance to pitting and stress corrosion cracking. Super Duplex 2507 (UNS S32750) Chemical Composition: Cr: 25%, Ni: 7%, Mo: 4%, N: 0.27%, Fe: balance Super Duplex 2507 is a higher alloy version of Duplex 2205, offering superior resistance to chloride stress corrosion cracking, pitting, and crevice corrosion. It is used in more aggressive environments, such as offshore oil and gas applications, where the material must withstand high pressures and corrosive conditions. Its higher molybdenum and nitrogen content enhances its performance in severe environments. PN 40 Pressure Rating: The "PN" in DIN 2545 refers to the pressure rating, and PN 40 indicates that the flange is designed to handle pressures up to 40 bar. This ensures that the flange is robust and reliable under high-pressure conditions, maintaining secure and leak-proof connections in critical applications. Applications: Oil and Gas Industry: These flanges are widely used in offshore and onshore pipelines, pressure vessels, and other critical infrastructure in oil and gas exploration, extraction, and transportation. Chemical and Petrochemical Industry: Due to their excellent resistance to corrosion, especially in acidic or chloride-rich environments, they are ideal for use in reactors, heat exchangers, and pipelines handling chemicals and petrochemicals. Marine and Offshore Applications: Duplex flanges are highly resistant to seawater corrosion, making them ideal for use in marine environments, such as shipbuilding, offshore rigs, and seawater cooling systems. Water Treatment Plants: These flanges are used in systems that handle aggressive water environments, ensuring durability and long service life in water and wastewater treatment applications. Power Generation: In power plants, these flanges are used in steam lines, cooling systems, and heat exchangers, where strength, corrosion resistance, and high-pressure capabilities are critical. Pharmaceutical Industry: These flanges are used in systems requiring sanitary conditions and resistance to aggressive cleaning solutions, such as in the transportation of chemicals or in reaction vessels. Key Benefits of Duplex Flanges (PN 40): Exceptional strength and corrosion resistance. Resistance to pitting and crevice corrosion. Excellent performance in harsh environments. Cost-effective compared to higher-grade materials for similar applications. DIN 2545 Duplex Flanges (PN 40) are a reliable choice for high-pressure applications in industries that demand both high performance and durability. #din2545 #din2545flanges #din2545duplexflanges #flanges

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

DIN 2543 Super Duplex Flanges refer to flanges made from Super Duplex Stainless Steel, which combines both austenitic and ferritic microstructures. Super duplex stainless steel grades, such as Grade 2507, offer superior strength and exceptional corrosion resistance compared to standard duplex or austenitic stainless steels. These flanges are used in environments where high strength and resistance to aggressive corrosion are required. Key Features of DIN 2543 Super Duplex Flanges: Corrosion Resistance: Super Duplex Stainless Steel (Grade 2507) offers outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. Strength: Super duplex steels have higher strength than both standard duplex and austenitic steels. This makes them suitable for high-pressure systems where both strength and resistance to corrosion are critical. Durability: These flanges are designed to withstand harsh environments and extreme conditions, ensuring long-term durability and reliability. Weldability: While super duplex materials are highly weldable, the welding process must be carefully controlled to avoid issues like sensitization and the formation of brittle phases. Types of Super Duplex Flanges (DIN 2543): Weld Neck Flanges (WN): These have a tapered neck and are welded to the pipe. They provide strength and are ideal for high-pressure applications. Slip-On Flanges (SO): These flanges slip over the pipe and are welded both inside and outside. They are easy to install and are used for general-purpose applications. Blind Flanges (BL): Used to close off the end of a pipeline or system, preventing fluid flow. They do not have a central hole. Socket Weld Flanges (SW): These flanges feature a socket into which the pipe is inserted and then welded. Used for smaller bore systems where high pressure is involved. Lap Joint Flanges (LJ): These flanges are used with a lap joint stub end. They allow for easy alignment and disassembly, often used in systems that need frequent maintenance. Common Super Duplex Stainless Steel Grades for DIN 2543 Flanges: Grade 2507 (Super Duplex Stainless Steel): Composition: Contains 25% chromium, 7% nickel, and 4% molybdenum. Properties: Superior corrosion resistance, particularly in highly aggressive environments like seawater, sulfuric acid, and other chloride-rich conditions. Also offers high strength and excellent resistance to pitting and stress corrosion cracking. Grade 2906 (Super Duplex Stainless Steel): Composition: Contains 29% chromium, 6% nickel, and 3% molybdenum. Properties: Offers even higher resistance to corrosion and better strength compared to Grade 2507, making it suitable for more extreme environments. Pressure Rating (PN16): PN16 refers to the flange's pressure rating of 16 bar (approximately 232 psi) at 20°C (68°F). Applications: Super duplex flanges rated PN16 are suitable for medium-pressure systems in environments like offshore oil rigs, chemical refineries, seawater systems, and other industries that require both high strength and exceptional corrosion resistance. Conclusion: DIN 2543 Super Duplex flanges are designed for high-performance applications where both corrosion resistance and strength are essential. #flanges #din2543

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.