The DIN 2558 Super Duplex Flange PN 6 is a high-performance piping component engineered for the most demanding industrial applications. Designed in accordance with DIN (Deutsches Institut für Normung) specifications, these flanges are manufactured from premium-grade super duplex stainless steel, offering outstanding mechanical strength and superior corrosion resistance, particularly in aggressive environments. Supplied by Ladhani Metal Corporation, these flanges are trusted by industries that require durability, safety, and long-lasting performance. Super duplex flanges are widely used in offshore oil and gas, petrochemical, chemical processing, desalination, and marine applications where resistance to stress corrosion cracking, pitting, and erosion is essential. The PN 6 pressure rating (6 bar or approximately 87 psi) makes them suitable for medium-pressure systems requiring robust and corrosion-resistant connections. Types: Weld Neck Flange – Offers a strong welded connection ideal for high-pressure and high-temperature systems. Slip-On Flange – Easy to install and weld, suitable for lower-stress applications. Blind Flange – Used to seal off the end of a pipeline, ensuring zero leakage. Threaded Flange – Provides a screw-type connection where welding isn’t preferred. Socket Weld Flange – Ideal for small-diameter, high-pressure applications requiring a smooth bore and secure weld. Grade & Chemical Composition: 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% Iron (Fe): Balance Key Properties: Exceptional resistance to chloride-induced stress corrosion cracking, pitting, and crevice corrosion High tensile and yield strength—almost double that of conventional austenitic stainless steels Outstanding performance in seawater and chemically aggressive environments PN 6 Rating: The PN 6 pressure rating corresponds to 6 bar (approximately 87 psi), making this flange ideal for medium-pressure pipelines where superior strength and corrosion resistance are required for safe and long-lasting operation. Features: Corrosion Resistance: Excellent resistance to both uniform and localized corrosion, even in chloride-rich environments such as seawater. High Mechanical Strength: Delivers outstanding load-bearing capacity, enabling the use of thinner wall sections for lighter system design. Long Service Life: Built for durability in extreme conditions, reducing maintenance and replacement costs over time. Stress Corrosion Resistance: Provides safety in high-stress, high-temperature, and aggressive chemical conditions. Industry Versatility: Widely used in offshore platforms, chemical plants, desalination units, marine vessels, and high-performance piping systems. Cost Efficiency: High strength and corrosion resistance allow for optimized system design with reduced material usage. Ladhani Metal Corporation ensures that each DIN 2558 Super Duplex Flange is manufactured using advanced technology and strict quality control processes. These flanges deliver the strength, reliability, and corrosion resistance required in the most challenging industrial applications—offering a dependable, long-term solution for critical infrastructure. #din2558 #din2558flanges #din2558superduplexflanges #flanges

Product Name: Titanium Bar Standard: ASTM B348 Material: GR1, GR2, GR5, GR7, GR12 Shape: Round, Square, Flat, Hex Diameter: 6-350mm Length: Max 6000mm Surface: Bright TC11 Titanium Alloy Bar As an important material for aerospace, TC11 is an α+β dual-phase titanium alloy with the phasetransfer temperature between 998 and 1020°C. Due to its excellent properties (such as high strength and fatigue resistance), it has become an ideal material to produce aircraft engine parts. TC11 titanium alloy under 300°C/5000 h has good microstructure and performance stability, different temperature transient high-temperature properties, such as tensile, creep and lasting, and double annealing and isothermal annealing. Through the normal annealing treatment of semi-finished products of TC11 titanium alloy, it can meet the requirements of aircraft structure temperature (below 300°C). Product Information Grade: GR1, GR2, GR4, GR5, GR7, GR12, GR23, TC11, TC21 Russian Grade: BT1-00,BT1-0,BT1-2, BT9, BT22 Standard: ASTM B348, AMS 4928, ASTM F67,ASTM F136 Diameter: 3-350mm Length: up to 6000mm Surface: Polished, Pickled Features: Polished surface with no defects, no cracks and no pitting. Chemical compositions(weight%,<=) Al Sn Mo Zr Si Fe C 5.8-7.0 -- 2.8-3.8 0.8-2.0 0.2-0.35 0.25 0.08 N H O Other(total) Ti 0.05 0.012 0.15 0.4 Remainder Physical properties(>=) Σb Tensile Strength (Mpa) σr0.2 Yield Strength (Mpa) δL0+50mm Elongation (%) ψ Reduction of area (%) 1030 900 10 30 Advantages 1. Price: As a leading manufacturer of titanium products, we have a history of more than 16 years and we know the market very well, so competitive prices can be offered. 2. Equipment: We have annealing furnaces, forging hammers, milling machines, straightening machines, shearing machines, trimming machines, punching machines, sandblasting machines etc. 3. Quality: Our titanium rods are sold to many countries. Our product is widely recognized. MTC, like EN10204.3.1, is available. Third-party test, such as TUV, SGS, BV etc., is also acceptable. 4. Shipment: Various modes of shipping. EXW, FOB, CIF etc. are all ok for us.

QUALITU STANDARD MATERIAL NO. DC07 DIN EN 10130 1.0873 The super deep drawing grade DC07 is specified according to the standard DIN EN 10130, which focuses on cold-rolled flat products made of soft steels for cold forming. This standard ensures that the technical requirements and test methods for cold-rolled products are met, which are of great importance in various industrial applications, especially where the highest demands are placed on formability and surface quality. DC07 is a particularly low-carbon steel characterized by exceptional cold formability. The chemical composition of DC07 is strictly controlled to ensure its excellent mechanical properties. The carbon content in DC07 is typically a maximum of 0.01 %, while the manganese content is a maximum of 0.20 %. The addition of micro-alloyed elements such as titanium and niobium can further improve formability and strength. The mechanical properties of DC07 are characterized by a very low maximum yield strength of 120 MPa and a tensile strength of between 270 and 350 MPa. A particularly outstanding property of DC07 is its high elongation at break of at least 40 %, which underlines the excellent formability of the material. These properties make DC07 ideal for the production of complex components that require extremely high precision and surface quality, such as deep-drawn body parts in the automotive industry or highly complex components in the electronics industry. The DIN EN 10130 standard also specifies precise tolerances for dimensions, shape and surface finish. These tolerances are crucial to ensuring consistently high product quality and meeting the requirements of end users. The surface of the cold-rolled flat products can be supplied in various qualities, from matt to high-gloss, to meet the specific requirements of different applications. The DIN EN 10152 standard specifies electrolytically galvanized, cold-rolled steel flat products for cold forming, including the super deep-drawing grade DC07. This standard defines the requirements for the zinc coating and the basic mechanical properties of the base material. DC07, when electrolytically galvanized in accordance with DIN EN 10152, is given an additional corrosion protection layer of zinc. This layer protects the material from oxidative influences and significantly increases the service life of the components made from it. The zinc coating can be applied in various thicknesses, depending on the specific requirements of the application. Typical coating thicknesses range from 5 to 20 µm. The chemical composition and mechanical properties of the base material DC07 remain unchanged after galvanizing and meet the requirements of DIN EN 10130. DC07 therefore retains its exceptional cold formability and mechanical performance. The yield strength, tensile strength and elongation at break also remain in the same range as for non-galvanized DC07. In addition to mechanical performance, the quality of the zinc coating is of central importance. The DIN EN 10152 standard specifies the requirements for the uniformity of the coating, the adhesive strength of the zinc and the surface quality. These requirements ensure that the galvanized products offer high corrosion resistance and an aesthetically pleasing surface. The use of DC07 in accordance with DIN EN 10152 is widespread in the automotive industry, the construction industry and in the manufacture of household appliances, where improved corrosion resistance is required in addition to high formability. Electrolytic galvanizing offers optimum protection here without impairing the excellent mechanical properties of the base material. In summary, it can be said that the DC07 super deep-drawing grade offers a wide range of applications in accordance with both DIN EN 10130 and DIN EN 10152. While DIN EN 10130 focuses on excellent formability and surface quality, DIN EN 10152 supplements these properties with improved corrosion resistance thanks to the zinc coating. Both standards ensure that DC07 is a reliable and high-quality material for numerous industrial applications.

QUALITU STANDARD MATERIAL NO. DC06 DIN EN 10130 1.0873 The special deep-drawing grade DC06 is specified in accordance with the standard DIN EN 10130, which focuses on cold-rolled flat products made of soft steels for cold forming. This standard defines the requirements and test methods for cold-rolled products used in various industrial applications, especially where high demands are placed on formability and surface quality. DC06 is an ultra-low carbon steel characterized by outstanding cold formability. The chemical composition of DC06 is precisely defined to ensure that the material has the required mechanical properties. Typically, DC06 contains a maximum of 0.01% carbon, a maximum of 0.20% manganese and only minimal traces of phosphorus and sulphur. This small amount of alloying elements contributes to the steel’s exceptional formability and weldability. The mechanical properties of DC06 are also clearly defined. The material has a maximum yield strength of 120 MPa and a tensile strength of between 270 and 350 MPa. In addition, DC06 has an elongation at break of at least 40%, which underlines its excellent formability. These properties make DC06 particularly suitable for the production of complex and precise components that require high formability, such as deep-drawn body parts in the automotive industry or sophisticated components in the household appliance industry. The DIN EN 10130 standard also specifies the tolerances for dimensions, shape and surface finish. These tolerances are crucial to ensure consistently high product quality and to meet the requirements of the end user. The surface of the cold-rolled flat products can be supplied in various qualities, from matt to glossy, to meet the specific requirements of different applications. The DIN EN 10152 standard specifies electrolytically galvanized, cold-rolled flat steel products for cold forming, including the special deep-drawing grade DC06. This standard defines the requirements for the zinc coating and the basic mechanical properties of the base material. DC06, when electrolytically galvanized in accordance with DIN EN 10152, is given an additional corrosion protection layer of zinc. This layer protects the material from oxidative influences and significantly increases the service life of the components made from it. The zinc coating can be applied in various thicknesses, depending on the specific requirements of the application. Typical coating thicknesses range from 5 to 20 µm. The chemical composition and mechanical properties of the base material DC06 remain unchanged even after galvanizing and meet the requirements of DIN EN 10130. DC06 therefore retains its outstanding cold formability and mechanical performance. The yield strength, tensile strength and elongation at break also remain in the same range as for ungalvanized DC06. In addition to mechanical performance, the quality of the zinc coating is of central importance. The DIN EN 10152 standard specifies the requirements for the uniformity of the coating, the adhesive strength of the zinc and the surface quality. These requirements ensure that the galvanized products offer high corrosion resistance and an aesthetically pleasing surface. The use of DC06 in accordance with DIN EN 10152 is widespread in the automotive industry, in the construction industry and in the manufacture of household appliances, where improved corrosion resistance is required in addition to high formability. Electrolytic galvanizing offers optimum protection here without impairing the excellent mechanical properties of the base material. In summary, it can be said that the special deep-drawing grade DC06 offers a wide range of applications in accordance with both DIN EN 10130 and DIN EN 10152. While DIN EN 10130 focuses on outstanding formability and surface quality, DIN EN 10152 supplements these properties with improved corrosion resistance thanks to the zinc coating. Both standards ensure that DC06 is a reliable and high-quality material for numerous industrial applications.

QUALITU STANDARD MATERIAL NO. OLD DESIGNATION DC05 DIN EN 10130 1.0312 St 15-03 The special deep-drawing grade DC05 is specified in accordance with the DIN EN 10130 standard, which focuses on cold-rolled flat products made of soft steels for cold forming. This standard specifies the technical requirements and test methods for cold-rolled products used in numerous industrial applications, particularly where exceptional formability and excellent surface quality are required. DC05 is a low-carbon steel that is characterized by its excellent cold formability. The chemical composition of DC05 is strictly controlled to ensure that the material has the desired mechanical properties. The carbon content in DC05 is typically a maximum of 0.02 %, while the manganese content is a maximum of 0.25 %. This composition promotes the high formability and weldability of the steel. The mechanical properties of DC05 are characterized by a low yield strength of maximum 150 MPa and a tensile strength between 270 and 350 MPa. An outstanding feature of DC05 is its high elongation at break of at least 38 %, which illustrates its excellent formability. These properties make DC05 ideal for the production of complex components that require high precision and surface quality, such as body parts in the automotive industry or sophisticated components in the electrical industry. The DIN EN 10130 standard also specifies the tolerances for dimensions, shape and surface finish. These tolerances are crucial to ensure consistently high product quality and to meet the requirements of end users. The surface of the cold-rolled flat products can be supplied in various qualities, from matt to glossy, to meet the specific requirements of different applications. The DIN EN 10152 standard specifies electrolytically galvanized, cold-rolled flat steel products for cold forming, including the special deep-drawing grade DC05. This standard defines the requirements for the zinc coating and the basic mechanical properties of the base material. DC05, when electrolytically galvanized in accordance with DIN EN 10152, is given an additional corrosion protection layer of zinc. This layer protects the material from oxidative influences and significantly increases the service life of the components made from it. The zinc coating can be applied in various thicknesses, depending on the specific requirements of the application. Typical coating thicknesses range from 5 to 20 µm. The chemical composition and mechanical properties of the base material DC05 remain unchanged after galvanizing and meet the requirements of DIN EN 10130. DC05 therefore retains its excellent cold formability and mechanical performance. The yield strength, tensile strength and elongation at break also remain in the same range as for ungalvanized DC05. In addition to mechanical performance, the quality of the zinc coating is of central importance. The DIN EN 10152 standard specifies the requirements for the uniformity of the coating, the adhesive strength of the zinc and the surface quality. These requirements ensure that the galvanized products offer high corrosion resistance and an aesthetically pleasing surface. The use of DC05 in accordance with DIN EN 10152 is widespread in the automotive industry, in the construction industry and in the manufacture of household appliances, where improved corrosion resistance is required in addition to high formability. Electrolytic galvanizing offers optimum protection here without impairing the excellent mechanical properties of the base material. In summary, it can be said that the special deep-drawing grade DC05 offers a wide range of applications in accordance with both DIN EN 10130 and DIN EN 10152. While DIN EN 10130 focuses on high formability and surface quality, DIN EN 10152 supplements these properties with improved corrosion resistance thanks to the zinc coating. Both standards ensure that DC05 is a reliable and high-quality material for numerous industrial applications.

QUALITU STANDARD MATERIAL NO. OLD DESIGNATION DC04 DIN EN 10130 1.0338 St 14-03 The special deep-drawing grade DC04 is specified in accordance with the standard DIN EN 10130, which focuses on cold-rolled flat products made of soft steels for cold forming. This standard specifies the technical requirements and test methods for cold-rolled products that are important in numerous industrial applications, especially where high formability and excellent surface quality are required. DC04 is a low-carbon steel that impresses with its exceptional cold formability. The chemical composition of DC04 is precisely balanced to ensure that the material has the desired mechanical properties. The carbon content in DC04 is typically a maximum of 0.08 %, while the manganese content is a maximum of 0.40 %. This composition supports the high formability and weldability of the steel, making it ideal for demanding forming processes. The mechanical properties of DC04 are characterized by a low yield strength of maximum 210 MPa and a tensile strength between 270 and 350 MPa. Particularly noteworthy is the high elongation at break of at least 38%, which illustrates the excellent formability of the material. These properties make DC04 a preferred choice for the production of complex components that require high precision and surface quality, such as car body components in the automotive industry or filigree parts in the electronics industry. The DIN EN 10130 standard also specifies the tolerances for dimensions, shape and surface finish. These tolerances are crucial to ensure consistently high product quality and to meet the requirements of end users. The surface of the cold-rolled flat products can be supplied in various qualities, from matt to high-gloss, to meet the specific requirements of different applications. The DIN EN 10152 standard specifies electrolytically galvanized, cold-rolled flat steel products for cold forming, including the special deep-drawing grade DC04. This standard defines the requirements for the zinc coating and the basic mechanical properties of the base material. DC04, when electrolytically galvanized in accordance with DIN EN 10152, is given an additional corrosion protection layer of zinc. This layer protects the material from oxidative influences and significantly increases the service life of the components made from it. The zinc coating can be applied in various thicknesses, depending on the specific requirements of the application. Typical coating thicknesses range from 5 to 20 µm. The chemical composition and mechanical properties of the base material DC04 remain unchanged even after galvanizing and meet the requirements of DIN EN 10130. DC04 therefore retains its excellent cold formability and mechanical performance. In addition to mechanical performance, the quality of the zinc coating is of central importance. The DIN EN 10152 standard specifies the requirements for the uniformity of the coating, the adhesive strength of the zinc and the surface quality. These requirements ensure that the galvanized products offer high corrosion resistance and an aesthetically pleasing surface. The use of DC04 in accordance with DIN EN 10152 is widespread in the automotive industry, the construction industry and in the manufacture of household appliances, where improved corrosion resistance is required in addition to high formability. Electrolytic galvanizing offers optimum protection here without impairing the excellent mechanical properties of the base material. DC04 and DC01 are both cold-rolled, unalloyed quality steels that are used for various industrial applications. While DC01 serves as the standard grade for general cold forming processes, DC04 is characterized by improved deep-drawing properties and higher ductility. This comparison highlights the differences between the two materials in terms of chemical composition, mechanical properties and typical applications. Chemical composition The chemical composition influences the formability and weldability of the steel. Both steels are made of carbon steel, but DC04 has a lower carbon content, which supports its improved cold formability. Thanks to the lower carbon and Sulphur content, DC04 offers improved deep-drawing capability as less intergranular embrittlement occurs. Mechanical properties The mechanical properties are decisive for the forming processes and the behavior of the steel under load. DC04 has a lower yield strength and higher elongation, which makes the material easier to form. The lower yield strength and increased minimum elongation of DC04 make this material ideal for demanding forming processes such as deep drawing.

QUALITU STANDARD MATERIAL NO. OLD DESIGNATION DC03 DIN EN 10130 1.0347 St 13-03 The deep drawing grade DC03 is specified according to the standard DIN EN 10130, which focuses on cold-rolled flat products made of soft steels for cold forming. This standard defines the technical requirements and test methods for cold-rolled products used in various industrial applications, particularly where high demands are placed on surface quality and mechanical properties. DC03 is a low-carbon steel characterized by excellent cold formability. The chemical composition of DC03 is precisely defined to ensure that the material has the required mechanical properties. Typically, DC03 contains a maximum of 0.10% carbon, a maximum of 0.45% manganese and traces of phosphorus and sulphur. This small amount of alloying elements contributes to the good formability and weldability of the steel. The mechanical properties of DC03 are also clearly defined. The material has a yield strength of at least 140 MPa and a tensile strength of between 270 and 370 MPa. In addition, DC03 has an elongation at break of at least 34%, which underlines its excellent formability. These properties make DC03 particularly suitable for the production of complex components that require high precision and surface quality, such as body parts in the automotive industry or household appliances. The DIN EN 10130 standard also specifies the tolerances for dimensions, shape and surface finish. These tolerances are crucial to ensure consistently high product quality and to meet the requirements of end users. The surface of the cold-rolled flat products can be supplied in various qualities, from matt to glossy, to meet the specific requirements of different applications. The DIN EN 10152 standard specifies electrolytically galvanized, cold-rolled flat steel products for cold forming, including the deep-drawing grade DC03. This standard defines the requirements for the zinc coating and the basic mechanical properties of the base material. DC03, when electrolytically galvanized in accordance with DIN EN 10152, is given an additional corrosion protection layer of zinc. This layer protects the material from oxidative influences and significantly increases the service life of the components made from it. The zinc coating can be applied in various thicknesses, depending on the specific requirements of the application. Typical coating thicknesses range from 5 to 20 µm. The chemical composition and mechanical properties of the base material DC03 remain unchanged after galvanizing and meet the requirements of DIN EN 10130. DC03 therefore retains its excellent cold formability and mechanical performance. The yield strength, tensile strength and elongation at break also remain in the same range as for ungalvanized DC03. In addition to mechanical performance, the quality of the zinc coating is of central importance. The DIN EN 10152 standard specifies the requirements for the uniformity of the coating, the adhesive strength of the zinc and the surface quality. These requirements ensure that the galvanized products offer high corrosion resistance and an aesthetically pleasing surface. The use of DC03 in accordance with DIN EN 10152 is widespread in the automotive industry, in the construction industry and in the manufacture of household appliances, where improved corrosion resistance is required in addition to high formability. Electrolytic galvanizing offers optimum protection here without impairing the excellent mechanical properties of the base material. In summary, it can be said that the deep-drawing grade DC03 offers a wide range of applications in accordance with both DIN EN 10130 and DIN EN 10152. While DIN EN 10130 focuses on high formability and surface quality, DIN EN 10152 supplements these properties with improved corrosion resistance thanks to the zinc coating. Both standards ensure that DC03 is a reliable and high-quality material for numerous industrial applications. Cold-rolled flat steel DC03, produced in accordance with the DIN EN 10130 and DIN EN 10152 standards, offers a number of advantages for applications in the cold forming process. While DIN EN 10130 defines the basic requirements for chemical composition, mechanical properties and surface quality, DIN EN 10152 extends these specifications to include specific conditions for electrolytically galvanized products that offer additional corrosion protection. Both standards together ensure that DC03 is a versatile material with high quality and durability.

DIN 2634 carbon steel flanges PN 25 are high-strength weld neck flanges manufactured according to the DIN 2634 standard. Specifically designed for use in high-pressure piping systems operating up to 25 bar (362 psi), these flanges offer excellent mechanical performance and are suitable for a wide range of industrial applications. Manufactured from quality carbon steel, they provide strong, durable, and cost-effective solutions for systems where corrosion resistance requirements are moderate but structural integrity is critical. Ladhani Metal Corporation is a recognized manufacturer and global supplier of carbon steel flanges, known for precision engineering, strict adherence to international standards, and advanced production capabilities. Each flange is subject to comprehensive testing and inspection to ensure reliability and consistent performance under demanding operating conditions. Pressure Rating: • PN 25 (25 bar / 362 psi): Suitable for medium to high-pressure applications where strength and impact resistance are essential. Flange Type: • Weld Neck Flanges Designed with a tapered hub to ensure smooth transition from flange to pipe, weld neck flanges are ideal for systems experiencing frequent thermal cycling, pressure fluctuations, and mechanical stress. • Flat Face (FF) Flanges Recommended for use with gaskets made from soft materials or when connecting to cast iron components, flat face flanges ensure even gasket compression and reliable sealing performance. Carbon Steel Grades and Typical Composition: Carbon Steel (ASTM A105 / C22.8 equivalent) – Forged Carbon Steel • Carbon (C): ≤ 0.35% • Manganese (Mn): 0.60 – 1.05% • Phosphorus (P): ≤ 0.035% • Sulfur (S): ≤ 0.040% • Silicon (Si): 0.10 – 0.35% • Iron (Fe): Balance Applications: Commonly used in oil and gas, petrochemical, water transmission, and power generation industries, especially in applications where high mechanical strength and pressure handling are more critical than corrosion resistance. Applications of DIN 2634 Carbon Steel Flanges PN 25: • Oil and Gas Pipelines Widely used in upstream and downstream systems for fluid transport under high pressure. • Petrochemical and Refining Plants Efficiently handles high-pressure flow systems involving hydrocarbons and steam. • Power Plants and Boiler Systems Suited for high-pressure steam and water lines, offering excellent tensile strength and fatigue resistance. • Water and Wastewater Infrastructure Used in municipal and industrial pipelines requiring cost-effective, robust flange connections. • General Industrial Systems Applicable in a wide range of mechanical systems and processing plants handling non-corrosive or mildly corrosive media. Key Features: • Compliant with DIN 2634 pressure and dimensional standards • PN 25 rating ensures compatibility with high-pressure pipelines • High tensile and yield strength for demanding structural requirements • Weld neck design enhances resistance to vibration and thermal expansion • Cost-effective solution for pressure-bearing connections • Available in standard and custom sizes, surface finishes, and pressure ratings • Heat treatment and coating options available upon request Conclusion: DIN 2634 carbon steel flanges PN 25 from Ladhani Metal Corporation provide a robust and economical solution for high-pressure systems where mechanical performance is essential. Their strength, reliability, and adaptability make them a preferred choice across industries such as oil and gas, power generation, and water infrastructure. For technical specifications, custom 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.