How Does Self-drilling Pipe Roof Work: The Comprehensive Tunneling Process Introduction.

In a tunnel with complex geological conditions such as hole collapse and stuck drilling, the self-drilling pipe roof can be selected for construction, which is fast in drilling speed, time-saving and labor-saving, and good installation effect. The self-drilling hollow anchor bolt from Sinorock has been verified by many tunnel engineering practices, which fully embodies its advantages in broken tunnels which are prone to collapse.
View Sinorock website: www.sinorockco.com
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