What are the consequences of not cleaning seamless pipes?

For seamless pipes that have been used for a long time, the sludge and rust in the pipes solidify, causing the original pipe diameter to become smaller. Hydrogen sulfide gas produced by sludge precipitation in pipelines can cause environmental pollution and easily cause explosions. Acid and alkali substances in wastewater can easily corrode pipe walls. Improper removal of foreign objects in pipes can cause pipe blockage.

Seamless pipes will form roll skins when the raw material steel pipes, steel plates, stainless steel, etc. are rolled. During the manufacturing, storage, transportation and installation processes of seamless pipes, impurities such as rust, welding slag, oil-based rust inhibitors, dust, sand, cement, and insulation materials coated on seamless pipes will be formed. The above-mentioned peeling, rust, welding slag, rust inhibitors, sediments and other impurities seriously affect the normal use of pipelines, so seamless pipes are cleaned to restore the surface of the material itself in seamless pipes. After cleaning, a dense chemical passivation film is formed on the clean metal surface, which can effectively prevent the regeneration of dirt. And it can effectively protect the equipment from corrosion or other chemical damage, effectively ensure the safety of the equipment and extend the service life of the equipment.

Seamless pipe cleaning method
1. Chemical cleaning. Chemical cleaning pipelines use chemicals to temporarily transform seamless pipes, and use temporary pipelines and circulating pump stations to perform cyclic chemical cleaning from both ends of the seamless pipes. This technology has the characteristics of strong flexibility, no requirements on the shape of the pipeline, fast speed, and thorough cleaning.
2. High pressure water cleaning. Use high-pressure water jets above 50Mpa to peel off and clean dirt on the inner surface of seamless pipes. This technology is mainly used for short-distance pipelines, and the diameter must be greater than 50cm. This technology is fast and low-cost.
3. PIG pigging. PIG industrial pigging technology relies on the driving force generated by the pump to drive the fluid to drive the PIG (pipe pig) forward in the pipeline, and discharge the dirt accumulated in the pipeline out of the pipeline, thereby achieving the purpose of pigging. clean. This technology is widely used in cleaning projects such as various process pipelines and oil and gas pipelines in oil fields, especially in pipeline cleaning for long-distance fluid transportation. It has advantages that other technologies cannot replace.

Cleaning of urban water supply seamless pipes is a very necessary task. It can not only improve the transportation efficiency of pipelines and reduce energy consumption, but also remove pipeline dirt, eliminate secondary pollution, improve water quality, and protect people's physical and mental health.

The method for cleaning urban water supply seamless pipes is
1. Cut a section of seamless pipe to be cleaned, and put the pipe pig equipped with an electronic positioning transmitter into the short pipe. After connecting the pipes with pipe clamps (or welding), start flowing water (or venting) to run the pig.
2. Engineering and technical personnel hold electronic positioning receivers to track the operation of pigs along the pipeline.
3. A large amount of sewage appears at the end of the seamless pipe, and the concentration continues to increase.
4. When the pig reaches the end point, the sewage gradually disappears and the cleaning process ends.