Anti-corrosion for small-diameter pipes
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How can the inner wall of pipes with small diameters be rust-removed and protected against corrosion?
It depends on what medium is used in the pipeline. Rust removal is often done by sandblasting
The inner wall of the pipeline is usually left untreated; it is purged and cleaned before use
For the inner wall of pipes with small diameters, rust removal and anti-corrosion treatment are generally carried out through sandblasting; this process is relatively simple and the equipment used is also straightforward.
If the length is not particularly long, sandblasting can be used; if it is too long, sandblasting may not ensure thorough cleaning.
In general design, small-diameter pipes are not designed to be too long; the main purpose is to remove rust and provide corrosion protection on the inner wall of the pipe. As for the specific methods of corrosion protection, it depends on the type of fluid being handled – generally, rubber lining or plastic lining is used
Anti-corrosion paint can be applied, of course after rust removal first.
Hello: 1. First, determine the diameter and length of the pipeline. 2. The material of the pipeline. 3. Details of the medium
For slender tubes with small diameters, if rust removal is necessary, pickling is the only option, followed by passivation or electroplating as required. Or just use a stainless steel pipe.
For those with high requirements, sandblasting is used; with professional nozzles, it is possible to meet quite high standards – SA2.5 is no problem at all
I don’t know what range the small caliber you’re referring to is； But it is certain that if a pipeline is to be lined for corrosion protection, the standard procedure is to first degrease it (that is, remove the grease), and only then proceed with rust removal (the most common method being sandblasting) ； Currently, the smallest diameter for liners made of PE is DN25, but they cannot be too long, as this poses difficulties in processing and testing ； In industrial applications, the pipe diameter can sometimes be increased appropriately for corrosion prevention
Sandblasting for rust removal, coating for corrosion protection; equipped with production lines