1.316 stainless steel pipe 2.O.D.:6mm~2220mm 3.W.T.:0.3mm~ ... 4.Application:boiler, transport oil, struction 5.Cert.: ISO -------------------------------------------1.316 stainless steel pipe2.O.D.:6mm~2220mm3.W.T.:0.3mm~80mm4 ... , Russian standard, Franch stan.)2. stainless steel pipe (304, 316, 316L, 304L, 321, 410, 444, 430)3. alloy steel pipe (ASTM A519 GR. 4130, 4140)4 ...