Stainless Steel Flanges
DIN 2634 stainless steel flanges PN 25 are precision-engineered weld neck flanges designed and manufactured in accordance with the DIN 2634 standard. These flanges are suitable for high-pressure pipeline systems operating up to 25 bar (362 psi), providing robust and secure connections for a variety of critical industrial applications. Constructed from high-quality stainless steel grades such as 304, 316, and 321, these flanges offer excellent mechanical properties, enhanced corrosion resistance, and dependable performance in aggressive service conditions.
Ladhani Metal Corporation is a globally recognized manufacturer and supplier of stainless steel flanges, known for delivering high-precision products that meet stringent international quality and dimensional standards. Each flange undergoes rigorous testing and quality checks to ensure optimal performance, safety, and longevity under high-pressure conditions.
Pressure Rating:
• PN 25 (25 bar / 362 psi): Engineered for high-pressure environments requiring reinforced flange connections with reliable resistance to corrosion and mechanical stress.
Flange Type:
• Weld Neck Flanges
Incorporating a long tapered hub, weld neck flanges help maintain pipe alignment, reduce stress concentration at the weld joint, and enable smooth fluid flow with minimal turbulence.
• Flat Face (FF) Flanges
Ideal for systems utilizing soft gaskets or cast components, flat face flanges promote consistent gasket compression and sealing integrity.
Stainless Steel Grades and Typical 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: Suitable for general-purpose piping systems in environments with moderate corrosion exposure, including potable water and light-duty process lines.
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: Ideal for systems exposed to chlorides, cleaning agents, or other corrosive substances such as in chemical processing, pharmaceuticals, and marine environments.
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: Frequently used in high-temperature services such as thermal processing equipment, exhaust systems, and heat exchangers due to its stability against intergranular corrosion.
Applications of DIN 2634 Stainless Steel Flanges PN 25:
• Chemical Processing Units
Handles higher operating pressures in systems transporting acids, alkalis, and solvents.
• Marine and Offshore Installations
Resistant to pressure fluctuations and saltwater corrosion in offshore piping networks.
• Pharmaceutical and Biotech Plants
Used in clean process environments where both pressure integrity and corrosion resistance are critical.
• Industrial Steam and Thermal Systems
Suitable for steam distribution and thermal expansion pipelines operating under high pressure.
• Power Generation Facilities
Applied in turbine piping, heat recovery systems, and pressurized cooling water circuits.
Key Features:
• Manufactured to DIN 2634 dimensional and pressure specifications
• PN 25 pressure rating supports high-pressure operation
• Weld neck design ensures leak-tight, stress-resistant connections
• Available in stainless steel grades 304, 316, 321 and their low-carbon variants
• Superior resistance to high-temperature corrosion and chemical attack
• Long-term mechanical strength and fatigue resistance
• Custom sizes, finishes, and pressure ratings available upon request
Conclusion:
DIN 2634 stainless steel flanges PN 25 from Ladhani Metal Corporation are engineered for high-performance use in high-pressure industrial environments where safety, corrosion resistance, and durability are paramount. These flanges are ideal for chemical, marine, thermal, and high-purity applications requiring strong, leak-resistant, and corrosion-resistant connections. For technical support, customized solutions, or pricing details, contact Ladhani Metal Corporation today.
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