1)TB/T 3209-2008<hollow bolt technical condition> 2)form up the primary support quickly 3)can grout under pressure 4)hollow

1. product description

This kind of anchor bolt is applicable to secondary complicated geological condition, permanent support and preparative support. Steel expansion type anchor bolt can form up the primary support quickly, resist deformation of surrounding rocks, maintain their stability, and then grouting achieves everlasting reinforcement.

2. standard

TB/T 3209-2008<hollow bolt technical condition>

3. component

Expansion hollow anchor bolt is composed of expansion steel anchor head, full thread hollow anchor body, stopper plug, arch plate, and nut.

4. specification

form up the primary support quickly, resist deformation of surrounding rocks, maintain their stability,the design of the hollow, realizes the function and the grouting.grout fully, and can realize grouting under pressurethe anchor body has good centralization, which avails to cover all of the anchor bolt ,avoiding corrosion, and achieving the purpose of long-term support.

5. Application

General hollow grouting anchor bolt is applicable to engineerings of railway, highway, tunnel, mine, water control project, slope, dam, bridge group, banks of river,ocean,sea, foundations of  high buildings and building reinforcement  projects etc.   

model	Nominal diameter(mm)	Nominal thickness(mm)	Yield strength (MPa)	Tensile strength(MPa)	Yield stress(KN)	Max strength(KN)	Elongation rate(%)
φ25×5	25	5	325	490	≥102	≥153	≥21
φ25×7	25	7	325	490	≥128	≥193	≥21
φ28×5.5	28	5.5	325	490	≥126	≥190	≥21
φ32×6	32	6	325	490	≥159	≥240	≥21