Hollow grouted IBO self drilling tunnel rock bolt mining anchor bolt bit coupling

Introduction Of Hollow Drilling Mining Rock Grouting Anchor Bolt
1, Hollow Drilling Mining Rock Grouting Anchor Bolt consists of hollow core with continuous hot-rolled outside thread
2, Hollow Drilling Mining Rock Grouting Anchor Bolt can application as injection anchor without casing, especially for non-stable boreholes
3, self-drilling installation, utilization of the anchor bar as drill rod with a single-use drill bit
4, easy extension of the anchor bars by anchor coupler
5, grouting or development of the grout body either simultaneously with drilling using a rotary injection adapter or afterwards
6, assembly of the anchor head with the anchor plate and the nut, stressing and locking

Parameter of Hollow Drilling Mining Rock Grouting Anchor Bolt

 

Bar

R32L

R32N/21

R32N/18.5

R32S

R32SS

Outside Diameter (mm)

32

Internal Diameter (mm)

22

21

18.5

17

15

Cross Sectional Area (mm2)

356

363

433

440

522

Ultimate Load (kN)

260

280

280

360

405

Yield Load (kN)

200

230

230

280

300

Weight (kg/m)

2.8

2.85

3.4

3.45

4.1

Thread Type

ISO10208

Type of Steel

EN10083-1

Thread (Left / Right hand)

Left or Right

Length (m)

(1) x 2, x3, x4, x5, x6, x7, x8, x9

 

 

Optional of Anti-corrosion

Hot-dipped Galvanization: ISO 1461 Epoxy Coating

Bending properties up to standard ISO 1519

Impact properties up to standard ASTMD 2794 Adhesion up to standared ISO 2409:2007