DIN 2628 stainless steel flanges PN 250 are precision-engineered weld neck flanges manufactured according to the DIN 2628 standard. Designed for high-pressure applications up to 250 bar (3625 psi), these flanges are essential for maintaining strength and leak-free connections in critical piping systems. Made from premium stainless steel grades such as 304, 316, and 321, these flanges offer exceptional mechanical stability, corrosion resistance, and durability under severe industrial operating conditions. Ladhani Metal Corporation is a leading manufacturer and supplier of stainless steel flanges. Our DIN 2628 PN 250 weld neck flanges are trusted in demanding sectors including oil and gas, chemical plants, marine engineering, energy infrastructure, and high-pressure process systems for their consistent quality and dependable performance. Pressure Rating: • PN 250 (250 bar / 3625 psi): Engineered for high-pressure piping systems requiring superior joint integrity and long-term sealing reliability. Flange Type: • Weld Neck Flanges Designed with a long tapered hub for high-stress applications. These flanges ensure smooth flow transition and minimize turbulence and erosion in the pipe system. • Flat Face (FF) Flanges Flat face design ensures uniform gasket compression and is suitable for systems using cast components or where flange distortion must be avoided. Stainless Steel Grades and Full Composition: Stainless Steel 304 / 304L (UNS S30400 / S30403) • 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: Suitable for general-purpose corrosion resistance. Commonly used in food processing, water treatment, and chemical piping. Stainless Steel 316 / 316L (UNS S31600 / S31603) • 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: Excellent resistance to chloride environments and acidic media. Widely used in marine, pharmaceutical, and chemical process plants. Stainless Steel 321 (UNS S32100) • 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: Titanium-stabilized alloy suited for high-temperature service and excellent resistance to intergranular corrosion. Common in thermal processing and aerospace exhaust systems. Applications of DIN 2628 Stainless Steel Flanges PN 250: • Oil and Gas Sector Used in pressure-critical pipelines, wellheads, and refining equipment. • Chemical and Petrochemical Industry Ideal for corrosive chemical service lines and pressurized chemical tanks. • Marine and Offshore Applications Used in seawater systems and high-pressure marine piping. • Energy and Power Generation Applied in steam, boiler, and high-pressure turbine piping systems. Key Features: • Compliant with DIN 2628 standards • PN 250 pressure class for high-pressure service • Weld neck design for optimal stress distribution • Available in stainless steel grades 304, 304L, 316, 316L, and 321 • Flat face option for uniform sealing and flange safety • Corrosion-resistant and robust under mechanical loads • Applicable in aggressive chemical, marine, and high-temperature environments • Custom sizes, materials, and finishes available upon request Conclusion: DIN 2628 Stainless Steel Flanges PN 250 from Ladhani Metal Corporation are engineered for high-pressure operations where integrity, reliability, and corrosion resistance are paramount. Available in a range of stainless steel materials including 304, 316, and 321, these weld neck flanges provide superior sealing and strength across demanding industrial sectors. Contact Ladhani Metal Corporation for custom solutions, technical assistance, or a detailed quotation.
Send Message