1. There is a big difference between cold galvanized pipe and hot-dip galvanized pipe. The zinc in hot-dip galvanizing is obtained from 450 degrees Celsius to 480 degrees Celsius, while the zinc in cold-galvanized steel pipes is obtained through electroplating at room temperature.
2. There is a big difference in the thickness of the galvanized layer between cold galvanized pipe and hot-dip galvanized pipe. The thickness of zinc in hot-dip galvanized steel pipe is much thicker than that in cold-galvanized steel pipe.
3. Cold-galvanized pipe and hot-dip galvanized pipe have a big difference in surface lubricity. The appearance of cold-galvanized steel pipe is much rougher than that of hot-dip galvanized steel pipe.
4. The price of cold galvanized pipes and hot-dip galvanized pipes are also very different. Hot-dip galvanized steel pipes are produced by regular galvanized pipe manufacturers. In order to ensure the quality of galvanized pipes, they generally The galvanizing method of electro-galvanized steel will not be used, and those companies with relatively outdated equipment and relatively small plans mostly use the electro-galvanized method. Naturally, cold-galvanized steel pipes are much cheaper than hot-dip galvanized steel pipes.
5. The cold galvanized steel pipe only has one side of the galvanized steel pipe, while the hot-dip galvanized steel pipe should be fully galvanized.
6. The adhesion of cold galvanized pipe and hot-dip galvanized pipe is also very different. The adhesion of cold galvanized steel pipe is much worse than that of hot-dip galvanized steel pipe. The zinc layers exist independently. The zinc layer is very thin and is still simply attached to the steel pipe base, so the cold galvanized steel pipe is easy to fall off.
