What is the zinc thickness of hot-dip galvanized grating?

 

The amount of zinc on the hot-dip galvanized grating directly affects the life of the hot-dip galvanized steel grating, which is also a concern of users. The quality and requirements after galvanizing must comply with the provisions of China GB/T13912. The amount of zinc on the hot-dip galvanized steel grating depends on the thickness of the flat steel of the hot-dip galvanized steel grating.

1. For hot-dip galvanized gratings with a thickness greater than or equal to 6mm, the average zinc thickness on the hot-dip galvanized steel grating should be greater than 85 microns, and the local thickness should be greater than 70 microns. |

2. For hot-dip galvanized gratings with a thickness less than 6mm and greater than 3mm, the average zinc thickness on the hot-dip galvanized steel grating should be greater than 70 microns, and the local thickness should be greater than 55 microns.

3. For hot-dip galvanized gratings with a thickness less than 3mm and greater than 1.5mm, the average zinc thickness on the hot-dip galvanized steel grating should be greater than 55 microns, and the local thickness should be greater than 45 microns.

Hot-dip galvanizing is also called hot-dip galvanizing. It melts the zinc ingot at high temperature, puts in some auxiliary materials, and then immerses the metal structure into the galvanizing tank to attach a layer of zinc to the metal structure. The advantage of hot-dip galvanizing is that it has strong anti-corrosion ability and good adhesion and hardness of the galvanized layer. The weight of the product increases after galvanizing. The amount of zinc we often talk about is mainly for hot-dip galvanizing.

Note: The total area of ​​the hot-dip galvanized grating plate with missed plating should not exceed 0.5 of the total surface area of ​​the hot-dip galvanized steel grating. The area of ​​each missed plating surface should not exceed 10Cm2. If the missed plating area is greater than the above specified value, these hot-dip galvanized grating plates should be re-plated. Hot-dip galvanized hot-dip galvanized steel gratings of general thickness should not have peeling and peeling under normal working conditions.