Threadbar Rock Bolt
- -Available in left hand or right hand tread.
- -Higher thread ribs mix resin better and improve anchorage.
- -Suitable for using with either resin cartridges or cement grout.
- -It has equal strength on the entire length.
- -Due to continuous thread on entire length. the nut can be fastened upward at any place. This will increase the material utilization ratio and save cost.
- -Available in black or hot dip galvanized.
Threadbar Rock Bolt Functions:
Threadbar Rock Bolt is anti-cannabis resin anchor bolt behind its superior performance, reasonable structure. Threadbar Rock Bolt length with equal strength.Shortcomings of the anti-twist screw bolt that csrew and flatten rope sections have lower strength is easy to be broken out. Moreover carrying capacity of the anti-cannabis anchor increases 40%. It is simple and low cost,widely used in coal mines,railway tunnels and other types or roadway projects.
Threadbar Rock Bolt Mechanical Properties
| Diameter | Yield Strength | Tensile Strength | Elongation A % | Mass Meter | Core Dia | Major Dia | |||||||
| Min | Typ. | Min | Typ. | Min | Typ. | ||||||||
| 20mm | 515 MPa | 162KN | 560 MPa | 176 KN | 630 MPa | 198 KN | 710 MPa | 220 KN | 18% | 24% | 2.46 KGS | 19.5mm | 22.5mm |
| 22mm | 525 MPa | 199KN | 590 MPa | 224 KN | 652 MPa | 247 KN | 761 MPa | 289 KN | 18% | 24% | 2.98 KGS | 21.2mm | 23.8mm |
| 25mm | 550 MPa | 269KN | 610 MPa | 298 KN | 684 MPa | 335 KN | 798 MPa | 391 KN | 18% | 24% | 3.85 KGS | 24.8mm | 28.5mm |
Threadbar Rock Bolt Bearing plate:
Threadbar Rock Bolt Accessories:
Domed nut, hex nut, anti-friction washer,domed ball
Threadbar Rock Bolt Length & Package
Bolts are packaged in bundles.
Bolt fittings, such as nuts, anti-friction washers and domed balls, are supplied fitted to rock bolts in the configuration requested.
How to work
1.Drill a hole with punching according to the requirement of design.
2.Use wind pressure to blast the hole rock powder
3.The hole diameter is 6-12mm bigger than the bolt diameter
4.Put rebar anchor bolt into the hole bottom and start the mixing device.Mixing time is to be rigidly controlled according to the requirement of resin anchoring agent.
5.Screw the nut tightly when time is up.
Threadbar Rock Bolt Applications:
Mines
Tunnels
Slopes
Places where need ground support
