Expansion Bolt/Anchor Bolt

1. Expansion Bolt (Expansion Anchor)

Definition

Expansion bolt, also known as wall expansion anchor, is a mechanical fixing fastener used to secure objects to concrete, brick, stone and masonry substrates. When tightening the nut, the expansion sleeve at the tail expands outward to squeeze the hole wall, generating friction locking force for fixation.

Main Features

Easy installation: Only a drill hole matching the anchor size is required, no pre-embedded parts.

Reliable holding power: Firm friction locking inside concrete, hollow brick and solid wall.

Complete specifications: Carbon steel galvanized, stainless steel 304/316 for indoor & outdoor anti-rust use.

Multiple head styles: Hexagon head, countersunk head, hook expansion bolt for different mounting demands.

Convenient disassembly and replacement of fixed components.

Application Scenarios

Air conditioner brackets, water pipe supports, guardrail installation, light equipment fixing, ceiling hanging, billboard brackets, household hardware mounting.

2. Anchor Bolt (Foundation Anchor Bolt)

Definition

Anchor bolt is a heavy-duty embedded fastener pre-buried in concrete foundations before pouring. It is used to connect steel structures, large machinery, equipment bases and building frames with the concrete foundation, bearing huge tensile and shear loads.

Main Features

High load resistance: Designed for heavy static and dynamic loads, widely used in engineering construction.

Pre-embedded construction: Fixed in concrete formwork before pouring to form integrated connection.

Customizable structures: J-type, L-type, straight with plate, double-head anchor bolts for different foundation depths.

High material strength: High-strength carbon steel with galvanized or hot-dip galvanized anti-corrosion treatment.

Permanent connection, not for light wall secondary fixing.

Application Scenarios

Steel workshop columns, tower crane foundations, transformer bases, large mechanical equipment, bridge supports, guardrail foundation fixing, photovoltaic support bases.

3. Short Catalogue Version (For Website & Product List)

Expansion Bolt

Expansion bolts adopt mechanical expansion locking structure. After drilling holes on walls, concrete and masonry, tightening the nut will expand the sleeve to achieve tight fixation. Galvanized and stainless steel options provide good rust resistance. Suitable for mounting brackets, hardware, pipes and small equipment.

Anchor Bolt

Anchor bolts are heavy-duty embedded fasteners for concrete foundations. Pre-buried during concrete pouring to firmly fix steel frames, large machinery and engineering supports. Available in L-type, J-type and plate base types with hot-dip galvanized surface for long-term outdoor anti-corrosion and heavy load bearing.