ASTM A790 Duplex Seamless Welded Pipe Suppliers

ASTM A790 Duplex Pipe

ASTM A790 is a austenitic- ferritic stainless steel for welded pipe and seamless pipe. These welded pipe and seamless pipe have rectangular, square, oval forms with bright, polish and black as surface finishing.

Scope And Manufacturing

ASTM A790 specification stands for seamless and welded tube (UNS S31803, UNS S32205, UNS S32750, UNS S32760) of stainless steel. These tubes can be readily sheared and shaped by bending, drawing, pressing, and other common procedures. Some allowance should be made for its high strength and the resulting greater springbok. The heat treatment after cold working operations is usually not required. If it is necessary to perform hot working operations, these procedures should be carried out within the range of 1800-2100°F. Higher temperatures reduce workability. Heavy scaling can occur with extended heating above 2100°F. The tube should be annealed at 2100°F minimum after hot working and cooled rapidly, ideally by water quenching. This anneal is necessary to eliminate intermetallic phases possibly precipitated during hot working, and thus provide maximum corrosion resistance.

Mumbadevi Steel India (MSI) offers austenitic-ferritic grades such as Duplex 2205, Super Duplex 2507, Super Duplex 4501, Duplex 2205 Welded Pipe, Super Duplex 2507 Seamless Pipe, Super Duplex 2507 Welded Pipe, which provide high resistance to stress corrosion, corrosion fatigue and high mechanical strength. Our company is an worldwide supplier of stainless steel seamless and welded pipe.