In recent years, many cities in China have built sewage treatment plants. Most of the water pipelines in urban sewage treatment projects are buried in steel pipes. Corrosion is a major problem in sewage treatment projects. The quality and life of the underground water pipeline directly affect the whole project. Therefore, it is very important to protect the underground pipeline in the city sewage treatment project.

Precautions for anticorrosion of buried pipelines

From the material performance, construction, cost and use the effect of comprehensive measurement, epoxy coal asphalt coating, and glass fiber cloth coating is a relatively ideal anticorROsion method for buried pipelines in urban sewage treatment engineering. From the technical performance, fused epoxy coating is a kind of anti-corrosion method worth popularizing. The following points should also be noted in use:

(1) Use cathodic protection

Separate the anticorrosive layer outside often exist in the process of using unforeseen damage, and local corrosion caused by the pipeline, using cathodic protection can not only effectively improve the anti-corrosion ability, and can monitor the pipeline corrosion and operation situation on the ground, the accurate design and predicting the service life of the pipeline, more suitable for engineering application of urban wastewater treatment. When implementing cathodic protection, increase the number of sacrificial anodes in the pipe section near the railway and electrical facilities.

(2) In the acid, alkaline, and high salt content of the soil, river crossing pipe section, such as strengthened or specially strengthened anticorrosion.

(3) The pipe section through the road and railway should be protected by casing outside the pipe.

(4) Fine sand should be laid in the trench before the pipeline is underground, and fine sand and soft soil should be filled first when backfilling, so as to avoid the direct burial of stones and bricks.

Cangzhou shenlong pipe manufacturing co., ltd. Is engaged in oil, gas, water, coal slurry mixing medium steel pipeline coating operations, anti-corrosion, insulation, piping is set in a body's specialized pipeline engineering precast construction enterprises, products used in oil pipeline, chemical piping, electrical, pipe, gas pipe, heat pipes, sewage pipes, etc. Anti-corrosion processing of straight pipe and bend pipe DN40-3000 three-layer structure polyolefin (PE, PP, TPEP,3LPE) steel pipe coated with anti-corrosion, DN40-3800 steel hot stewed bend pipe and pipe fittings coated with FBE, epoxy resin coating anti-corrosion, DN40-3800 steel pipe inner wall resistance reduction, solvent-free epoxy steel pipe, epoxy paint anti-corrosion, Coated plastic steel pipe, dip plastic steel pipe. Lined with plastic steel pipe PE,PO,PP,PTFE,HDPE, polymer polyethylene corrosion. The company is in strict accordance with China Petroleum and Natural Gas SY/T0413-2002, national GB/T23257-2009, German DIN 30670, American AWWA C210 and other international and domestic anti-corrosion standards.