... ,,ASTM,JIS,EN 5.Supply:150000ton/year Product: Industrial Stainless Steel Seamless/Welded Pipe Material Grade: 304, 304L, 316, 316L, 321, 317, ... customer' requestBest suitFluid and gas transport ,structure ,boiler,heat exchanger,super heaterCertificateISO, DNV, BV, TUV, CCS, ABS, RINA.Supply ability10000tons ... , competitive price and best service! 304/316/316L/304L Stainless Steel Pipe-Seamless&Welded