Product introduction
◆ Standards
| Grade | National Standard | Material | National Standard | Material | National Standard | Material |
| A36 carbon steel | GB | Q235B | ASTM | A283C | JIS | SM400A/SS400 |
| ISO | E235B/Fe360B | EN | S235JR | AFNOR | E24-2 | |
| BS | 40A/40B | DIN | St37-2 | HG | 230G | |
| NBN | AE235B | SS | 1311/1312 | ONORM | RSt360B | |
| NS | NS12123 | UNE | AE235B-FN | NP | FE360-B | |
| IS | IS2062 | UNI | Fe360B |
