Home > Products > Mining Rock Anchor Bolts > Roof Bolt for Mining Support / anchor bolt Quality Choice
Roof Bolt for Mining Support / anchor bolt Quality Choice
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Product Details
Place of Origin: | Shandong, China | Brand Name: | QL | Model Number: | prestress |
Standard: | GB |
Product Description
Roof Bolt for Mining Support / anchor bolt
Brief introduction
Self drilling rock anchor bolt is a bolting solution for unstable ground conditions such as sand, gravel, silt, and clays, and in soft to medium fractured rock formations.
For projects facing above geo-conditions, hollow bar self-drilling anchor should be considered as the main solution cuz it's designed for optimized installation, tailored to the project's needs.
By drilling a hole in collapsing soil or loose lock, with a sacrificial drill bit an a hollow bar, and after the drilling operation injecting cementitious grout or resin into the hollow bar and surrounding cavity, it's a top solution choice.
FEATURES :
(1) In the longitudinal direcition , rock body has equal tensile strength ,that is about 40% higher than the reverse-twist bolt in the same specification .
(2) Extend the support area , not only be used by end anchoring ,but also be used by fully anchoring ,that has a better support efficiency .
(3)Low price, widely used in coal mines, railways, hydropower and other types of roadway projects.
finish:yellow/blue/white zinc plated, hot dip galvanized
Test anchoring force
Type | METAL BAR Diameter(mm) | anchoring KN | ||||
deformed steel bar 6s≥335MPa | φ22 | >125 | ||||
φ20 | >105 | |||||
φ18 | >85 | |||||
φ16 | >75 | |||||
round steel bar 6s≥235MPa | φ22 | >90 | ||||
φ20 | >70 | |||||
φ18 | >60 | |||||
φ16 | >50 |
,
Specification:
d | length | ||||||
1400 | 1600 | 1800 | 2000 | 2200 | 2400 | 2600 | |
φ16 | - | + | + | + | - | - | - |
φ18 | - | + | + | + | + | - | - |
φ20 | - | - | + | + | + | + | - |
φ22 | - | - | - | + | + | + | + |
| SPEC.
| MATERIAL
| BEARING CAPACITY (kn)
| HIGH-STRENGTH PLATE(Spherical)
| ||
SIZE (mm)
| BEARING CAPACITY (kn)
| BORE DIAMETER (mm)
| ||||
All-Thread Rebar Rock Bolt
| DQ-16
| HRB335
| ≥100
| 120×120×6
| ≥125
| 23
|
DQ-18
| HRB335
| ≥125
| 120×120×8
| ≥170
| 23
| |
DQ-20
| HRB335
| ≥155
| 120×120×8
| ≥170
| 26
| |
DQ-22
| HRB335
| ≥185
| 150×150×8
| ≥220
| 26 |
Contact Us
- Shandong Xintai Qiangli Chain Co., Ltd.
- Contact namechao cheng
- Phone086-0538-6325988
- AddressGuodu Town Industrial Park
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