... :boiler,transportation, struction 5.Cert.ISO -------------------------------------------1. 1.4401 stainless steel pipe2.O.D.:6mm~2220mm3.W.T.:0 ... welded steel pipe (A53, API 5L, BS1387, EN10025) 1Product1.4401 stainless steel pipe2StandardU.S.A.ASTM A312/A213/A269JapanJIS G3459 ... 4306), X6CrNiTi18-10(1.4541), X5CrNiMo17-12-2(1.4401)4Out Diameter6mm~2220mm5Wall Thickness0.3mm~80mm6Length4-12m(usually to ...