Welded stainless steel round pipes and tubes 1.OD:12.7~2200mm 2.WT:0.5mm~30mm 3. ... stainless steel pipe Application: heat exchanger, boiler, condenser, pressure vessel 1) Standard: ASTM A249, ASTM A312 / DIN174572) Outside diameter: 12.7mm ... .5mm - 3.0mm4) Material: 301, 304, 304L, 316, 316L, 321, 409, 430 etc.5) Surface: bright anneal6) Test: eddy current / hydrostatic7 ...