Welded stainless steel round pipes and tubes 1.OD:12.7mm~2200mm 2. ... 3.Material:201,304,316L,309S, 4.TIG,PLASMA stainless steel heat exchanger tube (ISO/SGS) 1)ASTM/A312/A554: 201/202/304 ... .5 ~ 6mm 4)length: 6m or according your requirement.welded stainless steel/stainless steel pipe/stainless steel tube (ISO/SGS) 1.Material: 201, 202, 304,304L, 316 ...