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　　Glass fiber reinforced plastic pipelines are widely used in petroleum, thermoelectric, chemical and papermaking, urban water supply and drainage, factory sewage treatment, seawater desalination, gas transportation, coal mine ventilation and other fields. Glass fiber reinforced plastic pipelines are known for their outstanding good corrosion resistance, smooth inner surface, low transportation energy consumption, long design and service life, light weight, easy transportation and installation, There is no need for additional anti-corrosion like metal pipes and concrete pipes, and the comprehensive cost is low, which is increasingly accepted by the majority of users.