Water pipes were first used in the 17th and 18th centuries and were made of wood. There are still remnants of them in London. Later, they were found to be prone to mold and E. coli infection, so they were replaced.

Before the 1860s, lead pipes and lead-tin alloy pipes were mostly used. Later, they were found to be harmful to the human body, so they were replaced.

Before 2000, most countries began to use galvanized pipes because they were cheap. Later, they found that they would rust, so they were replaced. A small number of developed countries with deep pockets use stainless steel pipes, and there have been no problems until now.

After 2000, the country issued a relevant regulation that clearly prohibited the use of galvanized pipes as domestic drinking water pipes.

This is mainly due to the fact that both the inner and outer layers of galvanized pipes are galvanized. After the galvanized layer is destroyed, water and iron pipes will come into direct contact. This kind of ordinary iron pipe is very easy to rust. In fact, this phenomenon is particularly easy to see. After the tap water pipes in our homes have not been used for a long time, if they are opened, the water that flows out will be red and rusty.

Taking into account the above two factors:

The first point is that galvanized pipes are particularly prone to rust. After rusting, there will be a lot of rust.

Another point is that it is very easy for bacteria to breed after rusting.

Therefore, this kind of ordinary galvanized pipes are explicitly prohibited from being used in domestic water pipes. In the end, that is the result we saw, galvanized pipes are prohibited from being used in tap water.

What are the advantages of stainless steel water pipes over galvanized pipes?

Stainless steel water pipes are made from alloys. Compared with galvanized water pipes, they have the following three advantages:

1. No rust: The raw materials used to make stainless steel water pipes are chromium (Cr) and nickel (Ni), and their metal material properties are much weaker than zinc (Zn). Moreover, the surface of stainless steel water pipes is coated with an oxide film, which can prevent the oxidation reaction caused by the combination of stainless steel water pipes with oxygen. Then, the corrosion resistance of polished stainless steel water pipes is further enhanced.

2. Not easy to breed bacteria: Because the inner wall of stainless steel water pipes is smooth, it is not easy to rust and is not conducive to bacterial reproduction.

3. Corrosion resistance: Depending on the environment in which the water pipe is located, adding divergent metals can enhance corrosion resistance.

What is the difference between steel pipe and galvanized pipe?

1. Different manufacturing processes

Galvanized steel pipes and seamless steel pipes are two categories of steel pipes. Galvanizing means that the surface of the steel pipe has been galvanized. It may be a welded pipe or a seamless pipe. Seamless refers to the manufacturing process of the steel pipe. There are welding and Seamlessly.

2. Different physical properties

Galvanized pipes are more corrosion-resistant, while seamless steel pipes can withstand higher pressures. Galvanized steel pipes are not easy to rust due to the protection of zinc. Galvanized steel pipes are lighter than seamless steel pipes. If they are used on balconies, it is best to use galvanized bare pipes. Seamless steel pipes are too long and are not suitable for balconies.

Because the seamless steel pipe has a thick wall, it is naturally heavier, and the cost of seamless steel pipe is higher than that of galvanized steel pipe. Galvanized steel pipe is also very durable, and its service life is much longer than that of seamless steel pipe.

3. Different uses

Galvanized steel pipe is a welded steel pipe with a hot-dip or electroplated zinc layer on the surface. Galvanizing can increase the corrosion resistance of steel pipes and extend their service life.

Galvanized pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially offshore oil fields, and as oil heaters and condensators in chemical coking equipment. Pipes for coolers, coal distillate wash oil exchangers, pipes for trestle pipe piles, and support frames for mine tunnels, etc.