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Long-term solidification of oil sludge and rust deposits inside pipes reduces the original pipe diameter, necessitating sewage pipe dredging.
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Long-term sedimentation of sludge in pipes produces hydrogen sulfide gas, which causes environmental pollution and poses a high risk of combustion and explosion.
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Acidic and alkaline substances in wastewater are prone to corroding the pipe walls.
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Failure to regularly remove foreign objects in pipes leads to pipe blockages.
During the rolling process of steel pipes, steel plates, stainless steel, and other materials, mill scale is formed. During pipe manufacturing, storage, transportation, and installation, rust, welding slag, oil-based rust inhibitors (applied for anti-corrosion), dust, sand, cement, thermal insulation materials, and other impurities accumulate. The aforementioned mill scale, rust, welding slag, rust inhibitors, sand, and other impurities seriously affect the normal operation of pipes. Therefore, pipe cleaning is essential to restore the original surface of the pipe material.
After cleaning, a dense chemical passivation film is formed on the clean metal surface. This film can effectively prevent the reformation of dirt, protect equipment from corrosion or other chemical damage, and ensure equipment safety while extending its service life.
Chemical pipe cleaning involves using chemical agents and temporarily modifying the pipeline system. Temporary pipes and circulating pump stations are used to perform cyclic chemical cleaning from both ends of the pipe. This technology offers high flexibility, no restrictions on pipe shape, fast cleaning speed, and thorough results (suitable for sewage pipe dredging, toilet dredging, etc.).
This method uses high-pressure water jets of more than 50MPa to peel off and clean dirt from the inner surface of pipes. It is mainly applicable to short-distance pipes with a diameter of more than 50cm, featuring fast speed and low cost.
PIG (Pipeline Inspection Gauge) industrial pigging technology relies on the thrust generated by pumps to drive the PIG inside the pipe, pushing accumulated dirt out of the pipeline to achieve cleaning. Widely used in cleaning various process pipelines, oilfield oil and gas transmission pipelines, etc., this technology has irreplaceable advantages, especially for cleaning long-distance fluid transmission pipelines.