Our advantage: 1.Certificate :ISO,PED,CCS,TS,TUV,BV,SJS,GL 2.Competitive price and Strict quality control 3.Nearly 20 year stainless steel tubes /stainless steel /stainless steel productFeatures: 1) Grades: TP304, TP304L, TP310/S, TP316L, TP316/316L, TP317L,TP321, TP347, s318032) Standards: ASTM (ASME) A/SA312/M ASTM (ASME) A/SA 213/M, ASTM A2693) Sizes:a) O.D.: 6.00mm to 1000mmb) W.T.: 0.89mm to ...