• Hollow bar
  • Hollow bar

Hollow bar

  • USD $4 - $10 / Meter Get Latest Price
  • chemstar
  • Tight-Lok
  • Jiangxi, China
  • 1000 Meter / Meters
  • T/T MoneyGram Credit Card
  • 50 Meter / Meters per Month
  • Shanghai
Product Details
Application:Roof supports Material:Steel Dimensions:R25, R28, R32
Packaging Details 25pieces/barrel, about 20-22mts/20'fcl
Product Description


Self-drilling anchor bolt, matched with good fittings, is made of seamless steel pipe with thick wall. In addition, surface thread-shaping technology is taken. Therefore drilling, grouting and anchoring can be carried out at one time. 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.It's unnecessary to take the measures of sleeve protecting and pregrouting to drill 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.

Chemstar Enterprises Co., Ltd.

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Activated Carbon ,Polyacrylamide ,Barium Carbonate ,Sodium Hydrosulphide ,Thiourea

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