Duplex stainless steel

Dual phase stainless steel is mainly used in seawater environment, petrochemical industry, fertilizer industry, oil refining industry, petroleum and natural gas industry, light industry and food industry, pulp and paper industry, energy and environmental protection industry. 
Production standard: GB/T 21832 GB/T 21833 Austenitic ferritic duplex stainless steel seamless steel pipe ASTM A789 (ASME SA789) ASTM A790 (ASME SA790) seamless and welded ferritic/austenitic stainless steel nominal pipe ASTM A928 standard specification for filler metal electric fusion welded ferritic/austenitic (duplex) stainless steel pipe 
Material range：UNS--S32750 S31803 S32205 S32900
Specification range; Forged parts can be forged according to customer design; Seamless pipe Φ14-426mm（O.D.）*1-20mm（W.T.）