Stainless Steel Pipe/Tube 1.Grade:304,304L,316,316L,321,317L,310S,904L and so on. 2.Standards:ASTM, ... and so on. Stainless Steel Pipe/Tube 1.Grade:304,304L,316,316L,321,317L,310S,904L and so on. 2.Standards ... 630mm pipe thickness : 0.8mm-25mm 2) Grade : 304,304L,316,316L,321,317L,310S,904L and so on. 3) Standards: /ASTM ... 4307);316/316L/316Ti(1.4401/1.4404/1.4571);321(1.4541);347/347L(1.4550/1.4551);317L, ...