Concrete Expansion Bolts (Hot Dip Galvanized)
Hot dip galvanized concrete expansion bolts combine a zinc coating of 45µm or more with a sleeve-type expansion mechanism, giving both corrosion resistance and reliable load capacity in solid concrete and masonry. They are the standard fixing for outdoor installations where electro-plated anchors would rust within a season.
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | DIN / GB (tested) |
| Type | Sleeve type expansion anchor |
| Size Range | M6 – M16 |
| Material | Carbon Steel |
| Surface Finish | Hot Dip Galvanized (45µm+) |
| Base Material | Solid concrete, solid brick, stone |
| Supplied With | Expansion sleeve, hex nut, washer |
| Salt Spray Test | 500 hours (ASTM B117) |
| MOQ | 500 pcs (standard), 2,000 pcs (custom) |
| Lead Time | 7-15 days (standard), 20-30 days (custom) |
| Packaging | Bulk cartons / Wooden pallets / Custom labeling |
Available Sizes
M6, M8, M10, M12, M14, M16 with lengths 50mm – 200mm
Applications
- Outdoor steel structures
- Highway guardrail and fence posts
- Solar mounting and greenhouse frames
- Telecom towers and antenna masts
- Port and dock facilities
- Agricultural buildings and sheds
Certifications
ISO 9001:2015 certified. Material certificates (EN 10204 3.1/3.2). RoHS and REACH compliant.
Frequently Asked Questions
Why choose hot dip galvanized expansion bolts for outdoor work?
The thick HDG coating (45-85 μm) protects the anchor for decades of outdoor and infrastructure exposure — far beyond what electro-plating offers. Any coating damage from installation is minimal because expansion happens inside the hole.
What sizes are available?
Available sizes range from M6 – M16. Contact us with your required sizes and quantities for a quick quote.
What is the MOQ and lead time?
The MOQ is 500 pcs (standard), 2,000 pcs (custom). Lead time is 7-15 days (standard), 20-30 days (custom). Mixed-size containers and larger orders are negotiable — send us your requirement for a quick quote.
Do you provide material certificates?
Yes. Material test certificates per EN 10204 3.1 are available on request, and our manufacturing is ISO 9001:2015 certified. RoHS and REACH compliance documentation can also be provided.
