ASTM A790 UNS S32205 Duplex Stainless Steel Welded Pipe

GNEE is a leading supplier of ASTM A790 UNS S32205 pipes, offering a wide range of sizes and specifications, including types with mirror polished, plain end, beveled, and threaded connections.

GNEE supplies high-quality, dimensionally accurate A790 UNS S32205 welded and seamless pipes with excellent surface finish. According to the ASTM A790 standard, UNS S32205 welded and seamless pipes conform to ANSI B36.19 standards, with outside diameters ranging from NPS 1/8 to NPS 30, and wall thickness schedules including Sch 5S, SCH10S, SCH40S, and SCH80S. Other sizes can be customized according to customer requirements. The roundness and wall thickness tolerances of ASTM A790 pipes comply with ASTM A999 standards.

ASTM A790 UNS S32205 duplex stainless steel welded pipes

ASTM A790 S32205 welded pipes

ASTM A790 UNS S32205 duplex stainless steel welded pipes are manufactured using fully automated Tungsten Inert Gas Welding (GTAW) and Submerged Arc Welding (SAW) processes, maintaining a weld strength retention rate of ≥90% and undergoing 100% radiographic testing to ensure defect-free welds. In terms of mechanical properties, its yield strength is ≥450 MPa and tensile strength is ≥620 MPa, twice that of traditional austenitic stainless steel welded pipes. It can operate stably at working pressures up to 12 MPa and within a wide temperature range of -50℃ to 300℃.

Compared to equivalent UNS S32205 seamless pipes, ASTM A790 S32205 welded pipes offer a cost advantage of 15%-20% while maintaining comparable performance. Their smooth inner wall (surface roughness Ra ≤1.6 μm) reduces fluid flow resistance by 12%, improving media transport efficiency. These welded pipes are widely used in oil and gas, chemical, marine engineering, and flue gas desulfurization systems, extending equipment service life by more than 30% compared to traditional stainless steel welded pipes.