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.