Fiberglass ProfileChina Q235 42CrMo S235j2 S235j0 ASTM 1045 A36 A276 SAE 8620 8640 5210 5140 1010 4140 4340 12/16/20/25mm Hot Rolled Round/Flat/Square Carbon Steel Round Bar, Find details about China Bar, Rod from Q235 42CrMo S235j2 S235j0 ASTM 1045 A36 A276 SAE 8620 8640 5210 5140 1010 4140 4340 12/16/20/25mm Hot Rolled Round/Flat/Square Carbon Steel Round Bar