split set Type Friction Bolt

Friction bolt is a high-strength “C” shaped steel bolt with two parts, a tube and a matching domed bearing plate.

One end of the tube is tapered for easy insertion into a drill hole and the other has a welded ring flange to hold the bearing plate.

With the bearing plate in place, the tube is driven into a slightly smaller hole, using the same standard percussion drill that made the hole. As the tube of the rock bolt slides into place, the full length of the slot narrows, causing radial pressure to be exerted against the rock over its full contact length.

The friction bolt generally use high-strength steel.Such as Q235, Q345 and other steel as the main material.

Friction bolt specifications

Specifications	D33	D39	D42	D47
Variable length up to(m)	3	3	3	3
Outer diameter(mm)	33	39	42	47
Recommend dill diameter(mm)	30-32	35-38	38-40	43-45
Tube thickness(mm)	2	2.3	2.5	3
Weight kg/m	1.5	1.8	2.2	2.9
Recommended plate	150x150x4	150x150x4	150x150x4.5	150x150x5
Package QTY/pallet	300	200	200	200

A	B	C	D	E	F	G	H	I	J
Bolt diameter	Bolt length	Taper diameter	Taper slot wide	Taper length	Bolt slot wide	Ring location	Material gauge	Ring wire gauge	Ring open gap

Application of friction bolt

Friction bolts find extensive application in various domains,tunnel building, underground mining, and other civil engineering.

Underground mining: A typical roof rock bolt used for underground mining is the friction bolt, which is utilized to support the rock.to guarantee stability and avoid the collapse of rocks.

tunnel building, underground mining, and other civil engineering.

When building a tunnel, it is utilized to support the surrounding rock and prevent it from collapsing.

In civil engineering, friction bolts are used to stop erosion and stabilize the ground.

Infrastructure work: Some infrastructure projects, including building bridges and dams, need the usage of friction bolts.To provide support the surrounding rocks and soils.