The difference between hot dip galvanized steel pipe and cold dip galvanized steel pipe, hot dip galvanized steel pipe and cold dip galvanized steel pipe are called galvanized steel pipe, galvanized steel pipe is divided into two kinds, one is hot dip galvanized steel pipe, one is cold dip galvanized steel pipe, cold dip galvanized steel pipe is electro galvanized steel pipe, the galvanized content is very little, only about 10 grams to 20 grams per square meter, its corrosion resistance is very poor compared to hot dip galvanized steel pipe, the corrosion resistance of hot dip galvanized steel pipe is dozens of times that of cold dip galvanized steel pipe, let's look at the difference between hot dip galvanized steel pipe and cold dip galvanized steel pipe.
Hot dip galvanized steel pipe

Hot dip galvanized steel tube (Hot dip galvanized steel tube), in order to improve the corrosion resistance of steel tubes, the general steel tubes are galvanized. Galvanized steel tube is divided into two kinds of hot dip galvanized and electro galvanized, hot dip galvanized has thick galvanized layer, electro galvanized has low cost and low surface smoothness.

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

The first one: there is a big difference between cold galvanized and hot galvanized pipes in terms of operation. The zinc in hot-dip galvanizing is obtained at 450 degrees Celsius to 480 degrees Celsius, while the zinc in cold-dip galvanized steel pipes is obtained by electroplating at room temperature.
The second: there is a big difference in the thickness of the galvanized layer between cold galvanized pipes and hot galvanized pipes. The thickness of zinc in hot galvanized pipes is much thicker than that in cold galvanized pipes.
The third: there is a big difference in the surface smoothness between cold galvanized pipes and hot galvanized pipes. The surface of cold galvanized steel pipes is much rougher than that of hot galvanized steel pipes.The fourth: cold galvanized pipes and hot galvanized pipes also have a big difference in price, hot galvanized steel pipes are produced by regular galvanized pipe manufacturers, in order to ensure the quality of galvanized pipes, they generally do not use galvanized zinc galvanizing mode, and most of the equipment is relatively old, small-scale enterprises use galvanized zinc galvanizing mode, naturally, cold galvanized steel pipes are much cheaper than hot galvanized steel pipes.
The fifth: cold galvanized steel pipe only galvanizes one side of the steel pipe, while hot galvanized steel pipe should be galvanized all over.
The sixth: cold galvanized steel pipe and hot galvanized steel pipe are also very different in terms of adhesion. The adhesion of cold galvanized steel pipe is much worse than the adhesion of hot galvanized steel pipe, because the cold galvanized steel pipe is independent between the steel pipe matrix and the zinc layer, the zinc layer is very thin, and it is still simply attached to the steel pipe matrix, so the cold galvanized steel pipe is easy to fall off.
Cold Galvanized Steel Pipe
Cold galvanized steel pipe, using the electroplating process, only the outer wall of the steel pipe galvanized, the inner wall of the steel pipe is not galvanized; hot dip galvanized steel pipe using the hot dip galvanizing process, the inner and outer walls of the steel pipe have zinc layer, the state has made regulations, cold galvanized steel pipe can not be used as gas and water pipes, cold galvanized corrosion resistance is too poor, the zinc layer is also very easy to fall off, due to the existence of safety hazards have been banned by the state.Hot-dip galvanized steel pipe wall thickness specification

The difference between hot-dip galvanized steel pipe and cold-dip galvanized steel pipe is here today. In addition to the above, the biggest difference between the two is the difference in corrosion resistance, cold-dip galvanized steel pipe has very little galvanization, only 10-50g/m2, and hot-dip galvanized is several times higher, which is obviously safer. If there is still no understanding of this content, you can contact customer service for more support.