You are here: Home » News » Product News » The difference between galvanized steel pipe and hot-dip galvanized steel pipe.

The difference between galvanized steel pipe and hot-dip galvanized steel pipe.

Views: 0    

Galvanized steel pipe, commonly known as cold-galvanized pipe, adopts an electroplating process, only the outer wall of the steel pipe is galvanized, and the inner wall of the steel pipe is not galvanized

The hot-dip galvanized steel pipe adopts the hot-dip galvanizing process, and the inner and outer walls of the steel pipe have a zinc layer.

The difference:

1. The process is different, one is chemical treatment and the other is physical treatment; the hot-dip galvanized coating is firm and does not easy to fall off

2. The hot-dip galvanized coating is thick, so the anti-corrosion ability is strong. The galvanized (electroplating) coating is uniform, the surface quality is better, and the thickness of the coating is generally between a few microns and more than ten microns.

3. Hot-dip galvanizing is a chemical treatment and belongs to an electrochemical reaction. Galvanizing is a physical treatment, just brushing a layer of zinc on the surface, and there is no galvanizing inside, so the zinc layer is easy to fall off. Hot-dip galvanizing is often used in building construction.

4. The hot-dip galvanized pipe reacts the molten metal with the iron matrix to form an alloy layer so that the matrix and the coating are combined.




  Hunan Gaoxing Steel Development Zone, No.1888 Purui South Rd, Wangcheng District,Changsha, Hunan, China


Tel: 0086-0731-88739521

Copyright  2020 Threeway Steel Co.,Ltd. All Rights Reserved