Rock Bolt R38 Self Drilling Anchor Hollow Bar

Rock Bolt R38 Self Drilling Anchor Hollow Bar

The main advantages of the DSI Hollow Bar are:

  • Fast drilling and placing due to drilling, anchor installation and grouting in a single operation.
  • Neither separate anchor installation nor removal of casing and drill rods.
  • Similar installation methods for all ground conditions.
  • Choice of drill bits for different ground conditions.
  • The hollow core not only serves for flushing with air or water during drilling, but also for grouting the anchor tendon.
  • Flexibility in length by using couplers.

Product Description

Rock Bolt R38 Self Drilling Anchor Hollow Bar

Rock Bolt R38 Self Drilling Anchor Hollow Bar

Hollow bars are fully threaded, “disposable” drill rods capable of drilling holes utilizing sacrificial bits that will advance the drill string to the required depth and then allow them to be grouted in place. This process creates the steel reinforcing portion of an anchor or pile. Hollow bar products are a valuable and multi-functional addition to the geotechnical contractor’s toolbox. They can be used as tie back or tie down anchors, rock anchors, soil nails and micropiles in a large array of challenging applications.

Product Code Guide

DiameterGradeBar TypeLength
32SIBO3

Technical DataUnitR25NR32LR32NR32SR38NR51LR51NT76NT76S
Outer Diametermm253232323851517676
Average Inner Diametermm142218.5151936335145
Average Cross Sectional Areamm²290340430520770890107019002500
Ultimate Load*1kN20022028036050055080016001900
Yield Load*1kN15018023028040045063012001500
Average Tensile Strength*1N/mm²690650650690650620750840760
Average Tensile Strength*1N/mm²520530530540520510590630600
Weightkg/m2.32.73.44.16.17.08.415.019.7
Thread StandardISO 10208ISO 1720T76*2
Steel GradeAcc. to EN 10083-1
Delivery Lengths1m, 2m, 3m, 4m, 6m

*1 The ultimate load and yield load capacity are measured values. The tensile/yield strength are calculated average values. *2 Internal standard

 

Rock Bolt R38 Self Drilling Anchor Hollow Bar Rock Bolt R38 Self Drilling Anchor Hollow Bar

Service

Rock Bolt R38 Self Drilling Anchor Hollow Bar

  • The technical support team may provide remote or on-site support to resolve issues encountered by users during use.
  • Provide original spare parts to ensure timely replacement of worn or damaged parts to maintain the normal operation of DTH bits.
  • Timely information reply throughout the day, the first time to solve your problems.

Rock Bolt R38 Self Drilling Anchor Hollow Bar

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Rock Bolt R38 Self Drilling Anchor Hollow Bar, Self Drilling Rock Bolt Product,

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