Hot-dip galvanizing

Hot-dip galvanizing in accordance with
EN ISO 1461:

For permanent protection of its products, the steel gratings, treads and fasteners are hot-dip galvanized in Staco's own workshops.

Process:

Norm EN ISO 1461
Staining: hydrochloric acid solution
Dipping: flux solution
Drying/preheating: approx. 100° Celsius
Galvanizing: approx. 450° Celsius

Thickness of layer in accordance with EN ISO 1461:

Material thickness in mm. Zinc coating thickness in μm.
< 1,5          45
> 1,5 – 3    55
> 3 – 6       70
> 6             85

Finishing in accordance with EN ISO 1461:

Any irregularities are manually removed and the material is free from projections such as:
- blisters
- sharp points
- rough spots

Colour differences:

After hot-dip galvanizing, the colour of the zinc coating may change. This is usually caused by zinc iron alloy elements coming through.