... . Standard: ASTM/ASME A213, A269, A270 2.Size:OD6-530mm, WT 8-30mm A269 A270 HYGEIAN TUBEThe description of our export goods is the followings ... .1. Standard: ASTM/ASME A213, A269, A270JISG3463, JIS3446, JIS3448, JIS3459 ... , please feel free to contact us, we will offer you the reasonable rate with the high quality.