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Dextra Group.
All rights reserved.


  • High tensile fully threaded bars available in steel grade 555/700, 835/1030 and 930/1080* N/mm
  • Designed and manufactured in compliance with : ASTM A 722, BS4486 JIS G 3109 or equivalent.
  • Special steel grade available upon request.
  • Diameter range 25mm to 63.5mm.
  • Continuous hot rolled thread.
  • Minimum Elongation 7%.
  • Modulus of elasticity 205,000 N/mm².
  • Available with either left hand or right hand threads.
  • FRP & CRP composite rock bolts and soil nails are available from diameter 22 to 32mm.
  • Design team available for engineering support.
  • High grade steel effectively reduces the diameter of the bar allowing for easier handling and a smaller bore hole.
  • Continuous thread makes connection possible at any point.
  • Coarse thread and surface hardening allow for rough handling .
  • Not sensitive to dirt due to an oval bar section.
  • Pre-stressing applicable.
  • High elongation makes coping with large rock displacement possible.
  • Full range of accessories for specific applications.

   
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