Luoyang Gongyan Technology Co., Ltd.
Main products:rock bolt,hollow bar,FRP rock bolt,thread bar,friction bolt
Products
Contact Us
  • Contact Person : Ms. Xing kelly
  • Company Name : Luoyang Gongyan Technology Co., Ltd.
  • Tel : 86-379-63501959
  • Fax : 86-379-63501159
  • Address : Henan,Luoyang,Room 1102,Aolin Building, Taikang Road, Wangcheng Avenue
  • Country/Region : China
  • Zip : 471023

high strength hollow drill rock anchor

high strength hollow drill rock anchor
Product Detailed
1.Hollow drill rock anchor 2.With high strength 3.Usually used in tunnling , mining support 4.Low price and high quality

Hollow drill rock anchor, matched with good fittings, is made of seamless steel pipe. It has been widely used in tunnel presupport, slope and roadbed reinforcement and base bit support as anchoring.

Product Features:

1 With a bit at the anchor head, it is easy to cut through various rocks.

2 With the continuous international standard wave-shape thread, this anchor can be used to drill holes with help of bit.

3 It is used as grouting channel and unnecessary to be pulled out.

4 Grouting pressure can be kept at a high level under the help of grouting stopper, so the cracks are fully filled and the fractured rock is improved.

5 With the high-strength coupling elongated by mechanical cutting technology, this self-drilling anchor can be used at the place with narrow space, achieving the aim of rock reinforcement with extra-long anchor.

6 Its unnecessary to take the measure of sleeve protecting and pregrouting to drill the holes in condition of various surrounding rocks since this anchor embodies drilling, grouting and anchoring as a whole, and significant anchoring and grouting are achieved.

Product Specification: 

Type

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%

   Also available hot dip galvanized rods and accessories, special diameter can be customized.

Plate dimension: 120*120*4mm,120*120*6mm,150*150*6mm,150*150*8mm.

high strength hollow drill rock anchor



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