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Expansion shells are used to secure single-sided blinds or similar structures to rock, concrete or similar load-bearing floors. The expansion housing assembly is securely secured by a sturdy protective sleeve to save installation time and prevent loss of parts during handling. The sleeve must be removed before installation. Corrosion protection can be achieved by hot dip galvanizing or galvanizing to AS1789-1984.
Composition
Expanding shell anchors usually consist of sleeves, inner anchors, expansion bodies and reinforcement materials.
1. The inner anchor is the main component used to transmit loads and is often made of steel.
2. The expansion body forms a sealed cavity on the outer surface of the inner anchor through various methods.
3. External threads, rubber fixing rings, grooves or filling materials are used to fix the expansion body.
4. Reinforcement materials are generally epoxy resin mud coated with anti-corrosion materials.
Installation
1. Only use a rotary impact drill to drill holes and then blow them clean with compressed air.
2. The hole diameter should be controlled within the tolerance range specified by the expansion shell used.
3. Screw the threaded rod fully into the tapered portion of the extension housing as shown above.
4. If the expansion case comes with a temporary plastic collar, it should be removed before inserting into the hole
5. Before installation, tilt the expansion shell to avoid the risk of spalling.
6. Once installed, the expansion shell should be locked by turning the lever clockwise to "tilt" the two half-shells, without over-tightening the lever.
Advantages
1. The installation method is simple, which can effectively save time and labor costs, as well as the cost of composite materials.
2. For mining applications.
3. Extra anti-corrosion protection extends service life.
4. The bolt shank is made of plain AP 600 steel bar ø18,3 mm in compliance with ZN-97/AP-2 standards.
5. Various options for bolt forging heads are available.
6. A variety of plate types are available.
Application Scope
◆ Coal mine roadway roof & rib support
◆ Tunnel and underground engineering
◆ Slope reinforcement & hard rock anchoring
◆ Threaded rock bolt supporting system
About Us
Hebei Tianlong Fastener Co., LTD., founded in 2006, has been deeply engaged in the field of fastener manufacturing for 18 years, and is a modern enterprise integrating scientific research and development, intelligent manufacturing, global marketing and technical services.
The company has always adhered to the innovation-driven development strategy, through systematic talent training, forged a core team composed of senior engineers, innovative technicians and industry elites, combined with advanced management system, automatic machining center and intelligent testing system, to build a full chain of excellence guarantee system through research and development, production and quality control. Continue to provide customers with high-precision, high-strength, high-stability fastening solutions.
Exhibition
FAQ
How long has Tianlong Fastener been in the fastener manufacturing industry?
We have over 18 years of professional experience since our founding in 2006.
What core capabilities does Tianlong Fastener have?
We integrate R&D, intelligent manufacturing, global marketing and technical services.
Does Tianlong Fastener offer standard fastener products?
Yes, we supply 8.8/10.9/12.9 class bolts/nuts complying with GB, DIN, ASTM, BS, JIS, ISO.
Can Tianlong Fastener provide custom fastener solutions?
Absolutely, custom services are our core strength for special demands.
What custom materials can the fasteners be made of?
We customize fasteners with stainless steel, copper, aluminum alloy and other special materials.
