Do all cs pipes need rust removal?
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Do all cs pipes need rust removal?
Generally, carbon steel pipes will rust in the air. Pipes are generally exposed to the air, so rust is inevitable! ! ! ! ! ! (External corrosion), but the degree of corrosion varies with the level of anti-corrosion! Due to different media inside the pipeline, corrosion (rust) in the pipeline may not occur in some environments!
In order to prevent external corrosion and improve appearance, rust removal and painting are required.
Rust must be removed and then painted to prevent corrosion. The lower requirements should reach st2, and the higher requirements should be sa2.5. However, there are some paints that claim to be able to use rust brushes, such as epoxy thick paste type, but floating rust still needs to be removed.
All carbon steel pipelines always have a certain distance and time period from the manufacturing plant to the installation site. Even if the time is short, there may be floating rust. Unless it is very close from the manufacturing plant to the installation site, and it is in a dry area like the northwest, there is no rust (including floating rust, light rust, medium rust, heavy rust) and other phenomena. You can directly apply primer and then topcoat to complete the anti-corrosion project.； If this is not the case, rust removal must be carried out. Only in this way can the long-term use of carbon steel pipes be ensured, costs saved and the appearance of the factory beautified.
Rust removal is necessary. The on-site sand blasting is usually carried out with Sa2.5 primer and the welds are repainted after the pipes are installed and welded.
If it is a galvanized carbon steel pipe, it is not required. Others should be required more.
No, our unit never does this
Carbon steel pipes are not only prone to rust in the air, but also buried carbon steel pipes. I think external corrosion is bound to occur, so rust removal and anti-corrosion are very necessary. Not only the carbon steel pipelines, but also the carbon steel supports must be rust-proofed and anti-corrosion. Rust causes great damage to carbon steel. Rust removal and anti-corrosion should be done strictly in accordance with the standard requirements.
Carbon steel pipes must be derusted and painted. Steam pipes only need to be derusted and do not need to be painted.