Will galvanized square and rectangular tubes rust? How to prevent it?

Will galvanized square tubes and rectangular tubes rust?

Galvanized square and rectangular tubes will actually rust, but the galvanized layer is first oxidized to protect the square tubes from rust and have a longer service life. The chromium layer of chrome plating will not react with oxygen, carbon dioxide, and water in the air under natural conditions, and will not be corroded by weak acids and alkali, so its anti-rust effect is better. Assuming that the galvanized layer is thick enough, theoretically it will not rust. Since the surface of the square and rectangular tube is wrapped with a layer of metallic zinc and is isolated from the air, the square and rectangular tube is not prone to rust. However, it will also rust over time.

What is the difference between galvanized square and rectangular pipes and ordinary welded square and rectangular tubes?

Compared with ordinary welded square pipes, galvanized square and rectangular pipes have the following differences:
1. The external galvanized layer can protect the square and rectangular pipes from corrosion and rust.
2. The surface has high gloss and long service life, and can be used indoors and outdoors.
3. High strength, resistant to cracks and not easy to deform.
4. Commonly used in construction, transportation, petroleum, chemical industry, machinery, electricity and other fields.

How to prevent galvanized square and rectangular tubes from rusting?
1. The surface of the galvanized square rectangular tube is covered with a layer of zinc coating to prevent direct contact and corrosion of the square tube by the atmosphere. Therefore, there is no need to apply anti-rust paint like ordinary welded square pipes.
2. The service life of galvanized square and rectangular tubes depends on the application field. If constructed indoors, the service life can be as long as 5-10 years or even longer. However, if it is used in a harsh environment, such as being exposed to rain for a long time, it will gradually become oxidized and stained until it is corroded and rusted. Therefore, use in humid environments should be avoided as much as possible.
3. Regularly check the surface of square and rectangular tubes for damage or corrosion. Once a problem is found, it needs to be repaired or replaced in time.

In short, galvanized square and rectangular tube is a pipe with good strength, durability and other process properties, and can be used in many fields. In order to effectively prevent it from rusting, it must be used and maintained correctly.

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