What are the anti-corrosion principles and practical application details of galvanized steel pipes

First, will galvanized steel pipes rust?
Yes, galvanized steel pipes will rust. If used as water pipes, after a few years, a large amount of rust will accumulate inside the galvanized steel pipe, affecting water quality. The flowing water will be unclean, accompanied by rust stains, and will also contaminate sanitary ware, leading to bacterial growth on the inner wall of the galvanized steel pipe. Long-term consumption of this water can lead to excessive levels of heavy metals in the body, seriously interfering with people's health. To prevent rusting, manufacturers now oxidize the inner layer of galvanized steel pipes, extending their lifespan. However, once the oxide layer fails, the galvanized steel pipe will still rust.

Second, what are the differences between chrome-plated steel pipes and galvanized steel pipes?
1. Their functions differ. Galvanized steel pipes offer improved corrosion resistance and a longer service life. Chrome-plated steel pipes offer excellent wear resistance and improved oxidation and corrosion resistance. 1. Compared to chrome-plated steel pipes, galvanized steel pipes have slightly stronger corrosion resistance.
2. Their manufacturing processes also differ. Galvanized steel pipes are produced by reacting the metal with iron to form an alloy layer, while chrome plating uses a chrome plating solution and is used in indoor environments.
3. Their applications also differ. Galvanized steel pipes are widely used in the construction, power, and automotive industries, while chrome-plated steel pipes are generally widely used in manufacturing.

Third, Classification of Galvanized Steel Pipes:
1. Hot-dip galvanized square pipes: the smaller and thinner the size, the more expensive they are. These pipes generally show signs of rust after about 10 years of use.
2. Hot-dip galvanized strip steel pipes: these have higher production volumes and are slightly cheaper, but they are prone to rusting after 2-3 years of use.
3. Cold-dip galvanized steel pipes: These are the cheapest, and they rust after about one year.