... , WT: (1-30) 2) Main material: 304, 304L, 321, 3 Stainless Steel Seamless 1) Spec.: OD: (8-580)mm, WT: (1-30) 2 ... , ASTMA312, ASTMA5114) Quality control: test products' mechanical and chemical properties in every procedure5) Applications range: petroleum, chemical industry, medical equipment, paper ... -exchanger, etc.Packing:Wooden carton, sack or through the negotiation Stainless Steel Seamless Pipes