Friction Bolts - Advantages

Water Swelling Friction Bolt is made by high strength welded tube folded itself and welded to seal at both end of bolt.

• Simple installation, saving labor cost
• With high supporting strength
• Be used in wide variety of ground conditions.

How It Works?

When the bolt is used int the hole, the bush with a hole is connected with 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 standart pressure, the wall of the bolt holds onto the strata and creates a big friction strength to support. Thus, a safety and stable support system is formed.

Dimensions

You can order your product in any of the above Dimensions