Anti-corrosion steel pipe

3PE‑coated steel pipe refers to an externally coated steel pipe with a three‑layer polyethylene protective system, a commonly used corrosion‑resistant pipeline in the petroleum industry. The outer layer of 3PE‑coated steel pipe is a high‑density polyethylene anti‑corrosion coating; the intermediate layer consists of a copolymer adhesive containing functional groups with branching structures; and the innermost layer is an epoxy powder coating that directly contacts the steel pipe surface. 3PE‑reinforced grade corrosion‑resistant steel pipes are widely applied and produced in large quantities, primarily serving as pipelines for fluid transport or as structural components. Standard‑grade 3PE‑coated steel pipes are typically manufactured from alloy structural steels, ordinary carbon structural steels, or low‑alloy structural steels.

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Product Description

　　3PE‑coated steel pipe refers to an externally coated steel pipe with a three‑layer polyethylene protective coating, and it is a commonly used type of corrosion‑resistant pipeline in the petroleum industry.
　　The outer layer of 3PE‑coated steel pipe is a high‑density polyethylene anti‑corrosion coating, while the intermediate layer consists of a copolymer adhesive containing functional groups with branched structures. The coating in contact with the steel pipe surface and the substrate is an epoxy powder‑based anti‑corrosion layer. 3PE reinforced‑grade coated steel pipes are widely used and produced in large quantities, primarily serving as pipelines for fluid transport or as structural components. Standard‑grade 3PE‑coated steel pipes are typically manufactured by rolling alloy structural steels, ordinary carbon structural steels, or low‑alloy structural steels.
　　3PE‑coated steel pipes are widely used in the petroleum pipeline industry, with base materials including spiral welded pipes, straight‑seam welded pipes, and seamless steel pipes. The three‑layer polyethylene (3PE) anti‑corrosion coating boasts excellent resistance to water vapor permeation, superior corrosion protection, and robust mechanical properties.

Our Advantages

Smart Manufacturing Capacity Advantage

13 automated pipe‑making lines and 4 anti‑corrosion production lines, with an annual output of one million tons of steel pipes; all large‑diameter sizes are produced in‑house, ensuring stable lead times for bulk deliveries.

Quality and Qualification Advantages

Comprehensive nondestructive testing conducted by an independent laboratory, with dual certification under API and national standards; a long-term approved supplier for central state-owned enterprises, and fully qualified to bid on engineering projects.

Comprehensive Service Advantages

Customized solutions covering the entire oil & gas, municipal, and water‑conservation sectors, offering end‑to‑end support from conceptual design through logistics and after‑sales service, with capabilities for both domestic and international trade exports.