Bolt tunnel - tunnel grouting anchor - advance support price -25 bolt anchor bolt manufacturers JiangTai factory production of ordinary hollow bolt from the hollow drill pipe, steel anchor head, pulp stopper, plate and nut five parts. Anchor head specially made, and set out the hole slurry, dust. Applications: 1, radial reinforcement: hollow bolt instead of the traditional mortar anchor for radial reinforcement, can solve the traditional construction techniques mortar anchor grouting process is not full, you can not realize the pressure grouting and many other defects, to ensure project quality. 2, the slope reinforcement: hollow bolt reinforced slope instability, not only the process is simple, low cost, and convenient construction, the effect is significant. 3, excavation: excavation of the building reinforced hollow bolt, only a simple process, but also to achieve pressure grouting, improved pit rock conditions. Structure: hollow bolt full threaded rod from the hollow body, anchor head, pulp stopper, plate, nuts and other components, each of its parts are in order to ensure maximum cost when filling grouting full, dense and mortar can be up to tens of kilograms (specific design parameters to date) under pressure to penetrate into the surrounding rock to crack, and can be easily mounted plate and nut. Features: hollow bolt to bolt and grouting pipe functions combined. Grouting grouting pipe when it is, after grouting is completed without the need to unplug it becomes an anchor. Compared with the traditional anchor processes. A hollow design, the bolt to achieve a grouting tube function, to avoid the loss of mortar grouting pipe when pulled out of traditional construction process caused. 2, grouting and full, and to achieve pressure grouting to improve the quality of the project. 3, due to the role of the various parts, the center of the rod is very good, full-length wrap anchor mortar can avoid the risk of corrosion, to achieve the purpose of long-term support. 4, easy to install. Without on-site processing thread, you can easily install the plate and nut. 5, combined with supporting special injection pump and bolt grouting process, is the only complete solution to the traditional solid support of many problems anchoring system. Technical parameters: the factory according to the user's technical requirements, a variety of custom hollow bolt and strength.