1) Standards: GB/T14975-2002, GB/T14976-2002, GB13296-91, GB9948-88, ASTM A312, ASTM A213, ASTM A269, ASTMA511, DIN17456,JIS3459 2) Grade: TP 304, 304L, TP316, TP316L, TP321, TP321H, TP310S, TP301,S31803 3) Size: O.D. :6-630mm ; W.T.: 0.8-30mm 4) Applications range: for use in the petroleum, smelting, foodstuff, power, papermaking, chemical, medical equipment, aviation, boiler heat exchanger, and other fields MSN: