ASTM A790 Welded Pipes are high-performance stainless steel pipes manufactured by welding duplex and super duplex stainless steels. These pipes conform to the ASTM A790 specification, which covers seamless and straight-seam welded ferritic/austenitic stainless steel pipe intended for general corrosive service. These grades combine the benefits of austenitic and ferritic structures, providing excellent strength, stress corrosion resistance, and toughness in harsh operating environments.
ASTM A790 Welded Pipes also offer outstanding resistance to chloride pitting, crevice corrosion, and erosion, making them suitable for aggressive media such as seawater, brine, and acidic process fluids. Their duplex microstructure provides superior resistance to stress corrosion cracking, a common issue in traditional stainless steel pipes. These pipes are manufactured using advanced welding techniques (like GTAW and laser welding), followed by solution annealing and non-destructive testing to meet stringent industry quality standards.
