Description
Water Swelling Friction Bolt:
Water Swelling Friction Bolt is made by high strength welded tube folded itself and welded to seal at both end of bolt.
How To Work:
When the bolt is used in the hole, the bush with a hole is connected with a chuck of a high-pressure water pump. Start the pump and inject the water into tube, the folded wall of bolt is forced to expand. When the pump reaches a standard pressure, the wall of bolt holds onto the strata and creates a big friction strength to support.
Thus, a safety and stable support system is formed.
Advantages of Water Swelling Friction Bolt:
1. Simple installation, saving labor cost.
2. Be used in wide variety of ground conditons.
3. With high supporting strength.
SPECIFICATION:
|
Item No. |
Bolt Diameter |
Steel thickness |
Original Tube Diameter |
Bushing Head Diameter |
Upper Bushing Diameter
|
Breaking Load |
Expansion Pressure |
Minimum Elongation |
|
ATWSF120 |
28mm |
2mm |
41mm |
30/36mm |
28mm |
120KN |
300bar |
20% |
|
ATWSF160 |
38mm |
2mm |
54mm |
41/48mm |
38mm |
160KN |
240bar |
10% |
|
ATWSF240 |
38mm |
3mm |
54mm |
41/48mm |
38mm |
240KN |
300bar |
10% |
