A312 GR 309H

Available in sizes ranging from 1/8 inch to 24 inches nominal bore (NB), these pipes are fabricated in seamless and welded forms with wall thickness options such as SCH 10, SCH 40, SCH 80, and SCH XXS. These pipes feature precision finishes, including polished, pickled, and annealed surfaces, and customizable end types such as plain, beveled, or threaded. Manufactured to comply with ASTM A312 standards, 309H stainless steel pipes deliver tensile strength of 620 MPa and a minimum yield strength of 310 MPa, ensuring reliable performance under demanding conditions.

The chemical composition of A312 GR 309H pipes includes 22-24% chromium and 12-15% nickel, supplemented with a higher carbon content of up to 0.12%, which provides enhanced mechanical properties and thermal stability. These pipes exhibit excellent weldability, making them suitable for various industrial applications, including heat exchangers, boilers, and flue gas systems. The superior creep resistance of 309H grade ensures longevity and reliability in applications that demand prolonged exposure to elevated temperatures.

Dimensional tolerances for A312 GR 309H pipes are strictly maintained, with outside diameter tolerances within ±0.25 mm and wall thickness per ASTM specifications. These pipes undergo rigorous quality control measures, including radiographic and hydrostatic testing, to ensure compliance with international quality standards. With their proven track record of performance and durability, Kwality Steelage Pvt. Ltd. remains a trusted supplier of A312 GR 309H Stainless Steel Pipes to customers across the globe.

Backed by state-of-the-art manufacturing facilities and a commitment to quality, Kwality Steelage Pvt. Ltd. guarantees the highest standards for A312 GR 309H Stainless Steel Pipes. Contact us today to explore our range and discuss your specific project requirements.