Zhengzhou Eternoo Machinery Co., Ltd.
Main products:drill rig,filter,transformer,diesel generator,steel structre houses
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Contact Us
  • Contact Person : Ms. Cao Bommie
  • Company Name : Zhengzhou Eternoo Machinery Co., Ltd.
  • Tel : 86-371-86158396
  • Fax : 86-371-86158396
  • Address : Henan,zhengzhou,NO.65,fengqing road
  • Country/Region : China
  • Zip : 450003

self drilling hollow grouting anchor bolt

self drilling hollow grouting anchor bolt
Product Detailed
1)Drilling, grouting, anchoring accomplish at a time 2)standard:TB/T 3209-2008-hollow bolt technical condition 3)alloy bit

 1.standard

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

2. component

Spherical nut:  surrounding rock stress concentration can be passed to the plate.Vaulted pad:   can accept more of the surrounding rock stress.The plasma plug:  to keep certain pressure grouting surrounding rock fully filling the gap.The body:  the international standard waveforms thread connection, convenient in drill installation, sets coupling, nuts tighten, and any cutting and lengthen connectionLink set:  make bolt drilling and lengthening  to the depth of the design at the same timeBit:  strong penetration, so that the anchor can go through all kinds of rock

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

self drilling hollow grouting anchor bolt



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