Other Office SuppliesChina St37 S235j0 SAE 1045 4140 4340 8620 8640 5210 5140 ASTM 1045 A36 A276 A283A A283 12/16/20/25mm Hot Rolled/Cold Drawn Round/Flat/Square Carbon Steel Round Bar, Find details about China Hot Rolled, Carbon Steel Round Bar from St37 S235j0 SAE 1045 4140 4340 8620 8640 5210 5140 ASTM 1045 A36 A276 A283A A283 12/16/20/25mm Hot Rolled/Cold Drawn Round/Flat/Square Carbon Steel Round Bar