316 Stainless steel Pipe 1.Grade: 200,300,400series 2.Standard:API, ASTM, ... ,GB 3.Diameter:6-630mm 4.Thickness: 0.5-30 316 Stainless steel pipe1) Process method: cold drawn/cold rolling 2) Surface finish ... , JIS G3463, JIS G3448, DIN17458 4) Steel grade: 201.202.301.304.304L.310S.316.316L. 321. 347H. 430 and etc. 5 ...