Self-drilling Roof Pipe in Tunnel

Self-drilling pipe roof system can solve the construction problems of hole collapse, sticking, and inability to insert ordinary pipe roof after drilling under the rock conditions of grade IV and V. High construction efficiency, convenient grouting and good grouting effect. 👉 Welcome visit our website: 👉 Get Free Quotes: sinorock@ 👉 WhatsApp/Wechat: 8617539592302