welded pipe :The description of our export goods is the followings. 1.Standard: ASTM/ASME A312, A213, A269, A270 JISG3463, JIS3446, JIS3448, JIS3459 Din17456, Din17458 and so on.2.product Specification: OD6-530mm, WT 08-30mm, Length 3mm-14mm3.Material Grade: TP304/304H/304L, TP316L3/316, TP310S, TP321/321H,TP317L/317, TP347H, 31803, and so on. (14301/14306/14541/14401/14404/14550/14571)Special ...