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Audited Supplier Audited by an independent third-party inspection agency
1 Bear heavy pressure , support long time, has the characteristics of easy installation and not easily out of shape
2 Carrying capacity of the yielding and stable and reliable, to adapt to the load and deformation of the soft surrounding rock
3 The section utilization ratio is high, support the back is convenient, small amount of maintenance.
4 High rate of recovery and reuse, reduce timber use and environmental benefit is obvious.
zmwm21
| Size | Material | Theoretical weight (kg/m) | cross-sectional area (cm2) | Height | Thickness | Width | Leg thickness |
| 25U |
Q275B/ 20Mnk | 24.95 | 31.79 | +1.0 120 -1.5 |
+0.5 15 -1.2 |
+1.0 130 -3.0 |
+0.8 6.3 -0.5 |
| 29U |
Q275B/ 20Mnk | 29.00 | 37.00 | +1.0 124 -1.5 |
+0.5 16 -1.2 |
+1.0 150.5 -3.0 |
+0.8 7.2 -0.5 |
| 36U |
20Mnk | 35.87 | 45.70 | +1.0 138 -1.5 |
+0.5 17 -1.2 |
+1.0 171 -3.0 |
+0.8 7.8 -0.5 |
| 40U | 20Mnk | 40.05 | 51.02 | +1.0 149 -1.5 |
+0.5 20.2 -1.2 |
+1.0 171 -3.0 |
+0.8 8.5 -0.5 |
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