1. Material: 302,304,304L,305,310S,316,316L,317,317L,321,347,Duplex SS, S31500, S31803, S32750 etc. 2. Product specification: OD6-530mm x WT0.5-30 mm. 3. Executive standard: ASTMA213, ASTMA312M, ASTMA269, ASTMA511; JISG3463, JIS3446, JIS3448, JIS3459, DIN17456, DIN17458, DIN2462, GB14975, GB14976, GB13296.