We use professional construction equipment material Q345B which is a kind of low alloy steel plate , it main used in Ships, Cars, Bridges, Machinery, Pressure Vessels, Manufacturing Industries and other fields.below is property of this Q345B
| Programmer | Code | Related chemical composition | Hardness（HB） | Extensio（%） | Drag and extension intensity（N/mm2） | Bend intensity （N/mm2） | ||||
| Material | C | Si | Mn | P | S | |||||
| Mn board | Q345B | 0.18 | 0.55 | 1.4 | 0.03 | 0.03 | 163-187 | 21 | 470-660 | 345 |
| Homemade re-grinding board | NM360 | 0.20 | 0.3 | 1.3 | 0.02 | 0.006 | 360 | 16 | 1200 | 1020 |
| High intensity re-grinding board | HARDOX-500 | 0.20 | 0.7 | 1.7 | 0.025 | 0.01 | 470-500 | 8 | 1550 | 1300 |
