Friction Bolt -39-1200mm
- -Friction Bolt -39-1200mm, made from a strip of high-tensile steel, is roll-formed into a C-shape featuring a longitudinal slot for engagement. Designed with one end tapered to simplify insertion into a drill hole, the opposite end is securely welded to a ring that anchors the bearing plate.
- -Friction Bolt -39-1200mm reference to the AS/NZS1594 / ASTM A1011 standard
- -Usually combined with domed plates, provides anchoring force for rock strata.
- -Provide customers with a pull test for friction bolts after installation.
Friction Bolt -39-1200mm Functions
Friction Bolt -39-1200mm is a frictional ground support system.When friction bolt is inserted into drilling hole with smaller diameter, the slot partially closes and bolt diameter is compressed, which creates radial forces on rock roof surface along the whole length and firmly holds the rock. Friction Bolt as one of the main ground support bolts are considered the simplest and most cost-effective form which has been used by the metalliferous mining and tunnel industry for decades.
Friction Bolt -39-1200mm Features&Advantages
Immediate frictional Support in axial and radial
Made from high strength steel band
Independent supporting without plate
Easy for installation
Simple design,cost saving
Available in black,cold galvanizing or hot dip galvanized
Friction Bolt -39-1200mm Mechanical Properties
| Technical Data | TRFB33 | TRFB39 | TRFB42 | TRFB47 | |
| Drill hole diameter (mm) | 30-32 | 35-38 | 38-40 | 43-45.5 | |
| Min.Yield strength (kN) | 80 | 90 | 100 | 120 | 135 |
| Min.Tensile strength (kN) | 100 | 120 | 132 | 165 | 180 |
| Typ.Tensile strength (kN) | 120 | 130 | 150 | 180 | 200 |
| Elongation (A%) | ≥20 | ≥20 | ≥20 | ≥20 | |
| Typ.Anchorage (ton/m) | 4-6 | 4-7 | 5-8 | 6-10 | |
| Bearing plate (mm) | 150X150X4 | 150X150X4 | 150X150X4.5 | 150X150X5 200X200X5 | |
Friction Bolt -39-1200mm Accessories
Bearing plate,Driver,Pull collar.
Friction Bolt -39-1200mm Package
Package:100pcs — 300pcs each bundle as specified
Friction Bolt -39-1200mm Applications
Mines
Tunnels
Slopes
Places where need ground support
Tonry with the manufacturer specialized in developing new support products,according to different requirements of a variety of customized products from different mining companies.
The product type include Friction Bolt/Split Set, Rock Bolt, Expandable Bolt, Wire Mesh, Cable Bolt, Accessories and customized products for different geological conditions.The QA/QC control follows the ISO quality management system and meets the requirements of AS/NZS and ASTM standards.The following is the annual production capacity of several major products.
