... .WT:0.5mm~30mm 3.Material:201,304,316L,309S 4.TIG,PLASMA welded stainless steel pipe Application: heat exchanger, boiler, condenser ... ) Outside diameter: 14mm - 108mm3) Wall thickness: 0.5mm - 3.0mm4) Material: 301, 304, 304L, 316, 316L, 321, 409, 430 etc.5 ...