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High Torsion of GFRP Rockbolt
    • High Torsion of GFRP Rockbolt
  • We overcome the traditional difficulty of low torsion and have researched the high torsion of GFRP rockbolt . It can improve the supporting by prestressing.
  • njfenghui@gmail.com
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Product Details

We overcome the traditional difficulty of low torsion and have researched the high torsion of GFRP rockbolt . It can improve the supporting by prestressing.

>150

Classificatio-n

Type No.

Diameter (mm)

Bolt ultimate load
     (KN)

Thread ultimate load (kN)

Cross section (mm2)

Ultimate tensile strength (MPa)

 Modulus Of elasticity (GPa)

Torsion    (Nm)

Ultimate shear strength (MPa)

(Steel)

(FRP)

Normal high torsion rockbolt

F61-18

18

140

/

50

214

650

≥40

60

≥150

F61-20

20

175

/

60

269

650

85

F61-22

22

220

/

60

330

650

100

F61-23

23

250

/

70

363

650

120

F61-25

25

300

/

70

434

650

150

Enhanced high torsion rockbolt

F63-22

22

200

/

90

330

600

300


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