... hollow sections pipes and tubos galvanizados Square Tubes: O.D. from 10mm x 10mm to 500mm x 500mm Rectangular ... Tubes: O.D. from 10mm x 20mm to 600mm x 400mmWall thickness0 ... 53, EN 10210, EN 10219, JIS G 3466, GB/T 6728, BS 1387, BS 6323, IS : 3074, IS : 4923, DIN 1626, ... , ST37, ASTM A500, ASTM A 53: Gr. A, Gr B, Gr C, Q195, Q215, Q235, Q275, Q295, Q345,08F, 08, ...