3PE External Coating ERW Steel Pipe DN720 API 5L X60 For Long Distance Pipeline

Engineered for the rigorous demands of strategic oil and gas corridors, Huayang's DN720 API 5L X60 pipes feature a high-performance carbon steel body reinforced with a premium 3-Layer Polyethylene (3PE) coating system. The 720mm ERW sections are manufactured through precision high-frequency induction welding, followed by automated surface blast-cleaning to Sa 2.5 standards to ensure a high-anchor profile for the fusion-bonded epoxy (FBE) primer. This foundational layer is sequentially integrated with a high-viscosity copolymer adhesive and a thick high-density polyethylene (HDPE) outer jacket, creating a robust, multi-layer shield against soil-induced chemical degradation and mechanical impact. As a leading industrial specialist, Huayang subjects each pipe to stringent holiday detection and high-pressure hydrostatic verification, providing a durable, high-integrity conduit that maximizes operational safety and extends the service life of critical long-distance pipeline infrastructure.