Galvanized Self-Drilling Anchor Hollow Bars

Corrosion protected Self-Drilling Anchor hollow bars. Galvanized in accordance with EN ISO 1461:1999.

Self Drilling Hollow Bar can be protected against corrosion in a variety of ways suitable for both temporary (<24 months) and permanent (>24 months) applications.

Galvanizing Standards: Self-drilling anchor hollow bars can be protected against corrosion by hot dip galvanizing in accordance with ASTM A-153 or EN ISO 1461:1999.

The coated Zinc is common and relatively cheaper. While the steel is in the kettle, the iron in the steel reacts with the molten zinc to form a tightly-bonded alloy coating that provides superior corrosion protection to steel.

Hot-dip galvanizing protects steel catholically similarly to the sacrificial anode method.

The thickness of zinc coating should be strictly controlled to ensure the specification of threads. In most cases, the female thread dimensions of nuts or couplers should be larger than usual. And this may reduce the load carrying capacity.

You can read the technical article Micropile Reinforcing System and Corrosion Protection for further understanding.





Civil Engineering Underground Mining and Tunneling
1. Pile foundation 1. Stabilization of tunnel portals, trenches, and cut-and-cover areas
2. Slope and embankment stabilization 2. Forepoling
3. Reinforcement of excavation pits and retaining walls 3. Face stabilization
4. Foundation of pylons and wind mills 4. Radial rock bolting
5. Anchorage of avalanche protection structures and noise barriers 5. Roof and rib bolting
6. Injection works 6. Injection works

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