a high- tech enterprise and devotes itself to the technological development, production, sales and service of FRP rebar, rock bolt, profile and related accessories.
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Compared with steel bolts, low torque is the main reason for restricting the widespread use of FRP bolts. The company developed high-torque FRP bolts by improving the structure of the bolt and optimizing the material design, which overcomes the low torque of traditional FRP bolts. The shortcomings can be pre-stressed by torque to improve the stability of the supporting structure.
|
Classificatio-n |
Type No. |
Diameter (mm) |
Bolt ultimate load |
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 torsionrockbolt |
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 torsionrockbolt |
F63-22 |
22 |
200 |
/ |
90 |
330 |
600 |
300 |
||
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