Standard ASTM A276 / ASME SA276 Dimensions EN, DIN, JIS, ASTM, BS, ASME, AISI Round Bars Outside Diameter in the range of 4mm to 500mm Bright Bars Outside Diameter in the range of 4mm to 100mm Hex Bars 18mm â?? 57mm (11/16â?³ to 2-3/4â?³) Square Bars 18mm â?? 47mm (11/16â?³ to 1-3/4â?³) Flat Bars 1/2â?? to 10â?? in thickness range of 2mm to 150mm Finish Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish Length 1 to 6 Meters, Custom Cut Lengths Form Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.