= Tube pipe roof shed We are professional manufacturer of hollow bolt, sincerely look forward to your call, guaranteed to give you the most satisfied with the services and prices of large diameter pipe shed, shed 76, 108 bassoon shed, shed large diameter tunnel application of large diameter pipe roof self-drilling pipe roof as an effective means of anchoring, is extensively used in the tunnel advance support radial support, slope reinforcement, reinforcement and subgrade tunnel renovation project, in tunnels, roadbed , slope and other projects are widely used, especially in the engineering construction weak broken rock conditions, to prevent tunnel collapse, rock deformation, to ensure quality and safety of construction workers construction aspects of the construction team has become more desirable selected The construction method. Features 1. Large diameter pipe shed shed front end penetrating power tube alloy drill, drill rigs in the role, you can easily penetrate all types of rocks. 2. The pipe roof has a continuous thread of international standard waveforms with large loads to pull off by the high shear resistance, tangential shear force, anti-twisting forces and impact fracture toughness and other characteristics, can be used as drill with drill completion of drilling into the anchor hole. 3. As the body without the drill pipe shed aside, which can be used as grouting empty channel, grouting from the inside to the outside. 4. Efficient pulp can only plug so that the grouting grouting pressure to maintain a strong, fully fill the gap, consolidation broken rock. 5. High-strength plate, nuts can be delivered to the deep rock stress evenly hole On the walls surrounding rock, country rock and bolt achieve the purpose of supporting each other. 6. High intensity sets connected using self-drilling pipe roof while drilling has extended features, suitable for relatively small construction space, to achieve the design expertise of rock bolt reinforcement means. 7. Since the pipe roof Trinity features make it the construction of various types of rock conditions at the time, without casing Wall, pre-grouting and other special techniques can also be formed and to ensure that the anchor bolt holes and grouting effect. Welcome Gujiang Tai Hui Technology Co., Ltd. hollow bolt manufacturers can produce a variety of types of custom hollow bolt, pipe roof, Steel Pipe, cheap