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3PE Coating Steel Pipe

3PE coating steel pipes are widely applied for buried pipelines transferring natural gas, crude oil, and refined oil product over long distances. Good quality and timely delivery for many projects.
Product name: 3PE Coating Steel Pipe, HDPE coating, 3PE lined steel pipes, 3PP Coated Steel pipes, polyethylene coated steel pipe
Coating type:  3PE/3PP, FBE, epoxy coating, Polyurethane insulation and outer HDPE protection.
Standard: DIN 30670, DIN 30673; ISO21809-1
Coating thickness: 1.5-5.0mm as per customer requirement
Coated pipe OD: 1”-100” (34 -2540mm)
Product Details

The 3PE Coating Steel Pipe enjoys good impact resistance, abrasive resistance, shock resistance, acid resistance, high quality and long service life.

Our 3PE coating steel pipe can be used in transferring natural gas, crude oil and refined oil product over long distance.

Our 3 PE coating steel pipe can be also used in urban fuel gas piping system, storage tanks and groove piping system, protecting pipe in electricity and communication industries and water piping systems.

PE anti-corrosion pipe three-tier structure:

  • the first layer of epoxy powder (FBE> 100um),

  • the second adhesive (AD) 170-250um

  • the third layer of polyethylene (PE) 2.5-3.7mm.

Three of the integration, and steel pipe with a good solid coating.

Coating Material : Epoxy Powder, Adhesion, Polyethylene Or Polypropylene, Cement Inside

Standard: API 5L (PSL1, PSL2); GB/T 9711.1;

Grade: Gr. B, X42, X46, X52, X60, X65, X70, X80; Q235B; Gr. C;


Inspection: Hydraulic Testing, Eddy Current, Infrared Test;

The thired party, SGS, BV, can be accepted.

Certificate: Certificate: API 5L, API 5CT. ISO 9001; CE and so on.

Resistant to chemical corrosion, resistance to cathodic disbondment resistance, mechanical damage to properties.

What is the characteristic of the 3PE coating pipe

3PE coated pipe is the most advanced technology for the pipe anticorrosion. It puts together the advantage of the 2PE coating pipe and FBE coating pipe while at the same time avoids their weaknesses. Each layer of the 3PE coated pipe has its unique function in the coating structure.

  • The epoxy layer is for the main anticorrosion function. It has strong connection with the surface of the bare steel pipe, favorable cathodic disbondment property, wide temperature range (-40℃-100℃) and low water-absorbing quality.

  • The adhesive layer is to connect the epoxy layer and PE layer, whose main chemical composition is polyolefin. The polyolefin’s polar functional group can generate hydrogen bond or chemical bond with epoxy group of the FBE layer, making firm connection with the bottom layer. At the same time, the polyolefin’s nonpolar ethylene has affinity interaction with the PE layer, also generating favorable adhesive property with the face layer.

  • The PE layer has favorable electrical insulation property, low water-absorbing quality and strong resistance to mechanical damage. This layer mainly has function of mechanical protection and anti-corrosion.
    So 3PE coated pipe is a kind of composite system of these three layers with different functions, making the whole system is with all the functions to better protect pipeline.

What is the advantage of the 3PE coating steel pipes

The normal bare pipe will be corroded in the severe environment and its lifetime will be reduced, making the construction and maintenance cost very high. But due to every layer of the 3PE coating system has its good performance, the 3PE coated pipe can protect the pipe in the severe environment and extend its lifetime to 30-50 years even longer. it can significantly reduces the construction and maintainance cost for the pipeline. At the same time, the 3PE coated pipe has favorable thermal insulation property, the thermal losses is just 25% of the traditional pipe, saving a lot of energy cost during operation. At last, the 3PE coated pipe can directly be laid underground or in the water even directly in the frozen earth because of its good anticorrosion property and impact resistance property in the low temperature, no need to construct ditch.

Coating standard:

  • ANSI/AWWA C104/A21.4 American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water

  • ISO 21809 Petroleum and natural gas industries -- External coatings for buried or submerged pipelines used in pipeline transportation systems

  • DIN 30670 Polyethylen coatings of steel pipes and fittings

3PE Coated Steel Pipe Production Process

3PE Coated Steel Pipe Production Process

3PE Coating Steel Pipe Features

3PE Coating Steel Pipe has good thermal insulation performance, and the heat loss is only 25% of that of traditional pipes. Long-term operation can save a large amount of resources, significantly reduce energy costs, and has strong waterproof and corrosion resistance. With a pipe trench, it can be directly buried in the ground or water. The construction is simple and quick, the overall cost is low, and it has good corrosion resistance and impact resistance under low temperature conditions, and can be directly buried in frozen soil in a certain environment.

   3PE Coating Steel Pipe 3PE Coating Steel Pipe supplier 3PE Coating Steel Pipe

Cangzhou Shenlong Pipe Manufacturing Co., Ltd. is a professional 3PE coating steel pipe exporter, supplier and manufacturer. As a well-known enterprise in China, we provide high-quality products and services to global customers, please contact us for more information.

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