... -30) 2) Main material: 304, 304L, 321, 3 Stainless Steel Seamless 1) Spec.: OD: (8-580)mm, WT: (1-30) 2 ... , GB/T14976-94, JIS G3468, JIS G3463, ASTMA269, ASTMA312, ASTMA5114) Quality control: test products' mechanical and chemical properties in every procedure5 ... .Packing:Wooden carton, sack or through the negotiation Stainless Steel Seamless Pipes