seamless stainless steel tubes 1)specification: ASTM A312,A213,A269, A789 2)OD(6-273MM) WT0.5-16MM seamless stainless steel tubes1)specification: ASTM A312,A213,A269, A7892) OD: 6-273MM WT:0.5-24.5MM3)DELIVERY conditions: pickeled and annealed4)application: petrol-chemical indstry, food indstry, heat exchanger, nuclear power station and etc TP 316 welded stainless steel tube