Ferritic-Austenitic duplex seamless stainless steel pipes & tubes is one of the preponderant products in FENGHUA. They have wide application field due to their better mechanical properties and corrosion resistance capacities. Especially in rigor corrosion environment of spot corrosion or stress corrosion and their both, they have preferable capacity. They mainly apply in sea water environment, petrol-chemical industry, fertilizer, oil refining, petrol and gas industry, pulp & paper industry, energy and environment protection industry.
Production Specifications:
ASTM A789/789M Specification for seamless and welded ferritic/austenitic stainless steel tubing for general service
ASTM A790/790M Specification for seamless and welded ferritic/austenitic stainless steel pipe
GB 13296-2007 Specification for seamless stainless steel boiler, heat-exchanger tubes
GB/T14976-2002 Stainless steel seamless tubes for fluid transport
EN 10216-5 Seamless steel tubes for pressure purposes-Technical delivery conditions
Main Grade: UNS S31500,S31803,S32205,S32760,S32750, etc.
Size Range: φ6~159X0.5~12mm