Continuous Coating is a Steel Sheet Coil to Coil Toll Operation

Why Zinc?

Zinc is a versatile and practical electroplating metal.
With zinc electroplating surfaces can be produced that have a light dull gray to a satin silver finish. The appearance can be retained and protected by using a clear or gold protective coating. The zinc electroplating provides:

• Steel easily accepts zinc electroplating and enhances
  roll forming ability.

• Lasting corrosion protection on steel.

• A controlled thickness of deposit.

• Surfaces that have pleasing and desired appearances.

• Surfaces that can readily be chromatted for additional
  corrosion protection against "white and red rust".

What is Phosphate Coating?

Phosphate coatings are transformations of metal substrates into a new non-metallic and non-conductive properties.

They are widely used in the manufacture of products for principal reasons.

• To precondition surfaces to receive and retain paint and to protect surfaces against under paint corrosion.

• To prepare surfaces for bonding with plastic coating and adhesives.

• To precondition surfaces for metal forming operations, such as cold extrusion and breaking in friction bearing surfaces by providing for drawing compounds and lubricant.

• To improve corrosion-resistance by providing a base for waxes and rust preventive oil. By far the most wide spread use of phosphate coating is to prolong the useful life of paint finishes.

• Phosphate coatings are inert to everyday envioronment. They perform well in high humidity areas, hot and cold day and rainy seasons where white rust or storage stains are a constant threat. Phosphate hot dipped steel's painted life is greatly extended by stopping lateral corrosion that occurs underneath the paint.