As a fitting for bracket connection, the mining clamp is made of Q235 and 20 manganese steel plates. At present, there are U-shaped steel clamps of U25, U29, U36 and other specifications.

Under normal circumstances, the clamp has retractability and stable and reliable carrying capacity, adapting to the load and deformation of the soft surrounding rock; its cross-section utilization rate is high, the support is convenient, and the maintenance is small; at the same time, the steel arch reuse rate is high, reducing the use of pit wood, which has obvious environmental benefits.

Strict industry standards for the components that make up the clamp:

1. Clamp board: Quenched and tempered, the material is Q345 low carbon steel with mechanical properties not less than U-shaped steel clamp; thickness error of the formed cable board is ± 0.5mm, width error is ± 0.2mm; bolt hole The distance deviation is ± 1mm.

2. Clamp bolt: Made of round steel corresponding to U-shaped steel material. The bolt size is M24, the length is 35mm, the basic size of the thread is in accordance with GB / T96, the tolerance is in accordance with GB / T197, and the accuracy is 8g.

3. Clamp wire hole: the through hole with the specification of M24, the basic size of the thread meets the provisions of GB / T96, the tolerance meets the provisions of GB / T197, and the accuracy is 8g.

4. Working resistance: The strength of the clamp and U-shaped steel arch match. The difference between the maximum working resistance and the minimum working resistance is not more than 25kN. The average working resistance of 25U steel retractable stent clamp is not less than 100kN, the average working resistance of 29U steel retractable stent clamp is not less than 140kN, the average working resistance of 36U steel retractable stent clamp is not less than 190kN.

If you have any needs for clamps, please contact us! We will provide you various products with high quality and competitive price!

Email: zxminesupport@zxsteelgroup.com

Whatsapp: +86 18236766038