| After-sales Service: | Video or Technical Support |
|---|---|
| Warranty: | 1 Year |
| Material: | 20mnk Q275 |
| Samples: |
|---|
| Customization: |
|---|
|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
|
|---|---|
| Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|
Suppliers with verified business licenses
Audited Supplier 
Introduction of Steel Support U Beam Arched Roof U29 Shape Steel Arches with Good Pressure for Tunnel Supporting Easy to Install
| 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 |
Photos of U Steel Support U Beam Arched Roof U29 Shape Steel Arches with Good Pressure for Tunnel Supporting Easy to Install
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}