I-beam Steel for Mining
Mine timbering I-beams in Q235B and 20MnK for underground support.
| Grades | Q235B, 20MnK |
|---|---|
| Sizes | 9#, 11#, 12# |
| Standards | GB/T 700, GB/T 4697 |
Overview
Mining I-beams are used for roadway and roof support. Confirm size number, grade, and length with the order.