Hollow grouting anchor assembly structure 
 1, anchor: anchor bolt head can be positioned in the barb-drilled hole, and to ensure a good rod center. 
 2, anchor body: the most important assembly building, the anchor and play a major supporting role. 
 3, only the pulp plug: in the grouting process to maintain the pressure grouting, the grout into the rock to fully fill the gap. 
 4, plate: the rock to withstand greater stress. 
 5, nut: the stress concentration to the plate on the rock. 

 Hollow grouting anchor main technical performance parameters 
 High-strength, light hollow grouting anchor technical performance parameters as follows, if the user has special requirements, our company can be redesigned to be met: 
 Specifications ZK25 ZK27 ZK28 ZK32 ZK38 other custom specifications 
 Diameter (mm) ￠ 25 ￠ 27 ￠ 28 ￠ 32 ￠ 38 
 Tensile strength (Kn) F ≥ 180 F ≥ 200 F ≥ 200 F ≥ 220 F ≥ 350 
 Tooth height (mm) 1.5 ± 0.1 
 Pitch (mm) 12.7 ± 0.1 
 Thread direction L 
 Standard length 2.0 3.0 3.5 4.0 4.5 (according to your requirements) 
 Note tensile strength and length can be produced according to customer design requirements 

 Construction Technology 
 1, with the drill diameter and depth of drilling by design and clean up the air inside the rubble. 
 2, the anchor head and the rod end connection into the drilled hole, the anchor head hanging in the hole at the bottom of the barb. 
 3, install only the pulp plug, plate and nut. And tighten the nut. 
 4, the quick end of grouting joints and bolt connections, grouting and grouting joints connect the other end. 
 Start grouting grouting machine, to be full grouting and pressure to meet the design value off. Grouting pressure grouting according to the design parameters and to determine the machine performance, than the reference value :1:0 Fui Sha-1: 1, water-cement ratio reference value 0.45-0.5:1. 
 Professional production bolt, drill pipe, B19 drill, B22 drill, air drill, coal drill (twist drill rod), imitation of the British drill pipe, drill pipe to help anchor, hexagonal drill pipe, L-bolt, right rotating bolt, hollow bolt, hollow grouting anchor, self-feeding hollow bolt, self-drilling hollow bolt, and coal seam tube bolt and so on. 
 Drill: B19 drill, B19 anchor, B22 drill pipe, B22 air drill, drill to help anchor, coal drill, twist drill rod, hexagonal drill pipe, drill imitation of the British, bolt, drill pipe, left rotating bolt, right-handed bolt, glass, steel bolts, etc., hollow grouting anchor, self-feeding hollow grouting anchor, self-feeding drill pipe, self-drilling drill pipe, glass, steel bolt, slotted bolt tube other strong thread such as resin bolt 
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 Manager: Zhang Song 
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