400 Series Stainless Seamless Steel Tube Description: 400 Series Material Ferritic and Martensitic Stainless Steel Tubing, produced to applications where better mechanical properties, hardness, chloride induced pitting, crevice and stress corrosion cracking may be considered. And the high quality tube and pipe with such material can be also used for other specific applications as the petro/gas industry, bearing machining, etc. Product Name 400 Series TP409/TP430 Material Ferritic and Martensitic Stainless Steel Tubing�  Normal Standards ASTM A268, ASME SA268� Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service Steel Grade TP410/TP405/TP420/TP430/TP430Ti/TP403/TP409/TP444/TP439/TP446 Applications Heat Exchanger, Heater, Condenser, Machining, Bearing Machining, API Service, etc. Manufacture Process Seamless or Welded Size O.D.:6-273mm,  W.T.:0.5-25mm