Hengshui Tianli Mining Equipment Co., Ltd.
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  • Contact Person : Mr. Zu Hongjia
  • Company Name : Hengshui Tianli Mining Equipment Co., Ltd.
  • Tel : 86-0318-2218968
  • Fax : 86-0318-2689288
  • Address : Hebei,Hengshui,No. 11, Xiangsu Road, North Industrial Base, Taocheng Dist
  • Country/Region : China

hollow grouting anchor

hollow grouting anchor
Product Detailed
Related Categories:Anchors
1.Prestressed hollow grouting anchor 2.Sheel expanshion anchor head 3.Diameter:25/28/32mm 4.Used in good rock supporting

The company was founded in 2003

Registered capital:26 million yuan      Engineering and technical personnel:86 persons

Fixed assets:68.98 million yuan        Area:48000m2 

Number of employees:380 persons       Area of the building:30000m2 

Successive application of the company's series production of hollow grouting anchor in the Water Control Project, railways, tunnels, highway slope, bridge base project,Successful resolution of technical problems need to be reinforced by a variety of adverse geological conditions, the only completely solve the traditional anchoring anchoring technique many problems.

Prestressed hollow grouting  anchor consists of steel shell-expansion anchor head, hollow anchor rod, grouting stopper, arch plate and nut. Coupling and grouting block are optional. 

     It is designed for hard rock at fractured zone with growing joints which may cause loosing of fractured rock and reducing of friction between rocks, resulting in loosing of surrounding rocks in larger area. Applying enough pre-stress would keep its stability.

Construction Method:

1) Drill the hole and clean

2) Insert the anchor bolt to the hole bottom

3) Pre-stress the anchor rod and assure the anchor head contacting closely with hole bottom, then rotates the anchor rod until it is fastened, and install stopper, plate and nut;

4) Apply pre-stress to the designed value ,use the stretching gauge of anchor bolt or spanner;

5) Connect of grouting joints to grout

Product Specification:

specification

GY25

GY28

GY32

external diameter(mm)

25

28

32

Breaking load(KN) 

>150-180

>180-220

>220-250

Interior diameter(mm)

≥15

≥17

≥22

drilling diameter(mm)

42

42

51

thread type

               left hand

standard length(m)

1.0/1.5/2.0/2.5/3.0/3.5/4.0/4.5/5.0/6.0

length tolerance

±2.5%                                                                                                       

  

  

hollow grouting anchor



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