... .WT:0.5mm-30mm 3.Grade:304,304L,321,F321,316,316L 4.Standard:DIN,AISI,,ASTM, ... : Industrial Stainless Steel Seamless/Welded Pipe Material Grade: 304, 304L, 316, 316L, 321, 317, 317L, etc. Outside ... ;GOST 9941,EN 10216-5Grade304, 304L, 321, F321, 316, 316L, 310S, 317, 317L, 347H, 2205Duplex Steel ... delivery, competitive price and best service! 304/316/316L/304L Stainless Steel Pipe-Seamless&Welded