... , A268, A269, A270, A312, A358, A376, A511 Stainless Steel Welded Pipe:Detail:Stainless steel pipe standard: ASTM A688, A213, A249, A268, A269 ... A778, A554,DIN17457,DIN17455,EN10217-72) Outside diameter: 6mm - 2500mm3) Wall thickness: 0.5mm - 30mm4) Material: 304, 304L, 316, ... , corrosion test ect.9) We supply welded stainless steel tube Straight type and U type.10) Main application: Heat Exchanger ...