Product Description
Hydraulic expansion Friction Bolt is made by high strength welded tube folded itself and welded to seal at both end of bolt.
Working principle:
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 Hydraulic expansion friction bolt:
1. Simple installation, saving labor cost.
2. Be used in wide variety of ground conditons.
3. With high supporting strength.
Product Parameters
| 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% |
Company Profile
ABOUT US
ANTO Group is located at the foot of Mount Tai,in the vast Qilu Plain, facing the sea in the east and Yellow River in the west.In the North China Heavy Industry Development Zone, there are many ports and expressways here. Sea and land transportation is very convenient.
ANTO Group has ANTO Mining Equipment Co.,Ltd. and ANSHUN Mining Equipment Co.,Ltd.
ANTO is a modern comprehensive company integrating the production, sales and logistics of friction bolts,welded mesh,threaded Rebar Rock Bolt,Cable Bolt, Mining Plate, W Steel Band,damping nuts and other mining products.In recent years,ANTO has been grasping the opportunity closely with the firm belief of being based in China and going to the world,constantly innovating and developing.
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