... : OD 18~ 273MM ,THK: 1 ~ 10MM TP317L Stainless Steel Seamless Round Pipe 1)Standard: ASTM A312/ASME SA3122)Material: TP304,TP304L ... , chemical, medical equipment, aviation, boiler heat-exchanger and other fieldsSurface finish:pickling, annealing, manual polish and mechanical polishMill Test Certificate is ... Asia, Western Europe and So on. TP317L Stainless Steel Seamless Round Pipe