25mm diameter hollow bolt anchor bolt factory price grouting anchor, hollow bolt, hollow bolt, hollow grouting anchor grouting hollow bolt grouting hollow bolt by bolt to remove the self-drilling drilling function evolved from the full thread hollow bolt body, together with the anchor head, plate, nut, only the pulp plugs and other components. Each of its parts are in order to ensure maximum grouting mortar when filling full, dense and mortar can penetrate into the surrounding rock fissures at up to tens of kilograms of pressure, and can be easily mounted plate and nut. Bolt Body: Length of continuous waveform threaded surface, easy to cut and take a long bolt, an increase compared to the smooth rod rod grouting material itself bonding area, thereby improving the anchoring force; hollow design, hollow rod directly As the high pressure drilling and grouting channel channel feng shui, compared with a solid rod, obtained by grouting better stiffness and shear strength. Pulp tampon: the rubber material, combined with the pressure grouting, a certain seal, easy to increase the fullness and density of the grouting. Plate: hot rolled forming gaskets, easy dense paste the rock surface, and withstand greater stress in the surrounding rock. Nuts: The Dome or hexagonal nut, can be transferred to the surrounding rock stress concentration plate. Anchor head: with steel anchor head, not only to fixed and centering anchor rod and can produce a certain anchoring force in the rock bolting and grouting. Luoyang River Thai Technology Co., Ltd - a professional manufacturer of hollow bolt manufacturers supply, the price advantage is obvious, sincerely look forward to your call, guaranteed to give you the best service and price. 186 = 35 = 0379--35 hollow bolt grouting Scope 1, radial reinforcement: hollow bolt instead of the traditional mortar anchor for radial reinforcement, can solve the traditional construction process during the grouting mortar anchor is not full can not achieve pressure grouting and many other defects, 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. Hollow grouting anchor Technical Data General Standard provides the following table: Size JT22 JT25 JT28 JT32 outside diameter (mm) 22 25 28 32 tensile strength (KN) ≥150-180 ≥150-180 ≥180-220 ≥220-250 Note Pulp Aperture (mm) ≥12 ≥15 ≥17 ≥22 hole diameter (mm) 42 42 42 51 L thread direction (right-handed can be customized) Standard length (m) 3 3.5 4 4.5 length error ± 2.5% Note 1, hollow Bolt and mechanical properties according to user requirements of production; 2, bolt body length according to customer processing requirements; 3, thread direction according to customer processing requirements; 4, plate, nut, only the pulp plug, anchor head, drill, connected sets are available I can plant a variety of types of custom manufacturing hollow bolt according to user requirements, please contact us.