... , 50A700, 50A800, 50A1000, 50A1300, 65A800, 65A1000, 65A1300, 65A1600Standard: ASTM A677M-99Grade: 47F280, 47F400, 47F450, 64F320, 64F550Standard: EN 10106-1996Grade: M470-50A, M530-50A, M600-50A, M700-50A ... , M800-50A, M600-65A, M700-65A, M800-65ALow grade ...