Surface Process of Gratings

Hot Galvanizing

Normally, Hot galvanizing grating will be carried out after end welding process.When the thickness of bearing bars is not less than 5mm, the weight of average Zinc Layer will not be less than 610g/m2.When the thickness of bearing bars is less than 5mm,the weight of average Zinc Layer will not be less than 460g/m2.The quality and requirements after hot galvanizing are subject to the standard of GB/T 13912.

Lacquering

To gain protection layer through the ways of spraying,brushing and soaking.

Service life of hot galvanizing

Coated zinc thickness 100um , the anticipated life of products in various circumstances.

Anti-acid and alkali corrossion capacity

The range pH6 to pH12.5,a stable protective film will be formed on the zinc surface.It has good anti-corrosive property.