Underground Construction and Mining Company in Canada ? Bolat
> Steadfast Anchors

Steadfast Anchors

Steadfast Anchors

 

The self-drilling hollow bar anchor system is comprised of a hollow threaded bar with an attached drill bit that can perform drilling, anchoring and grouting in a single operation. The hollow bar allows air and water to freely pass through the bar during drilling to remove debris and then allow grout to be injected immediately after drilling is completed. Grout fills the hollow bar and completely covers the entire bolt. Couplers can be used to join hollow bars and extend the bolt length while nuts and plates are used to provide the required tension.

Steadfast Anchors

Advantages

  • Safe, reliable and time saving
  • Simple installation and operation process
  • Anchor bars can be cut in any length as per customer demand
  • It provides higher bounding stress than smooth steel pips
  • Suitable for difficult ground conditions
  • Choice of drill bits for different ground conditions

Specifications

Anchor Roads

Unit R 25N R32L R32N R32S R38 N R 51L R 51N T 76N T 76S
Outer Diameter mm 25 32 32 32 38 51 51 76 76
Inner Diameter mm 14 21.5 18.5 15 19 36 33 51 45
Ultimate Load kn 200 210 280 360 500 550 800 1600 1900
Yield Load kn 150 160 230 280 400 450 630 1200 1500
Unit R 25N R32L R32N R32S R38 N R 51L R 51N T 76N T 76S
Outer Diameter mm 34 42 42 42 51 63 63 95 95
Length mm 150 145 145 190 220 140 190 200 200