Luoyang Gongyan Technology Co., Ltd

Friction Bolt  

friction bolt consists of only two parts, a tube and matching domed bearing plate. the high strength steel tube is slotted along its length. one end is tapered for easy insertion into a drill hole and the other had a welded ring flange to hold the plate. with the bearing plate in place, the tube is driven into a slightly smaller hole, using the same standard percussion drill that made the hole. as the tube of the rock bolt slides into place, the full length of the slot narrows, causing radial pressure to be exerted against the rock over its full length. structure: 1, the tube is made of high-tensile alloy steel plate; 2, easy to install; 3, no need resins and cement cartridges; 4, big friction between bolt and rock; 5, high yield and tensile strength; 6, high-strength face plate; 7,the height of tunnel must be larger than the bolt length.