3PE pipe

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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.

Diameter of Φ159-Φ1220.

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.

Qualified standard
  • GB/T3091 Welded steel pipe for low pressure liquid delivery
  • GB/T9711 Petroleum and natural gas industries--Steel pipe for pipelines
  • IS: 3589 Steel tubes for water and sewage
  • IS : 1978-1982:Steel tubes for use in transportation of oil; gas & Petroleum products
  • ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
  • DIN 2458 WELDED STEEL PIPES AND TUBES
  • EN10217 Welded steel tubes for pressure purposes. Technical delivery conditions.
  • Non-alloy steel tubes with specified room temperature properties
  • API 5L Line Pipe
  • SY/T5037 Spiral submerged arc-welded steel pipe for pipelines for low pressure field fluid service
  • SY/T 5040 Spiral submerged arc-welded steel pipe piles
  • CJ/T 3022 Spiral submerged-arc welded steel pipe for municipal heat supply
  • IS : 1978 Steel tubes for use in transportation of oil; gas & Petroleum products
  • ASTM A252 WELDED AND SEAMLESS STEEL PIPE PILES
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

Size:
  • Outer Diamter: 219.1mm - 4064mm (8" - 160")
  • Wall Thickness: 3.2 mm - 40mm
  • Length: 6mtr-18mtr
End
  • square ends (straight cut, saw cut, and torch cut).
  • beveled for welding, beveled
Surface
  • Lightly oiled,
  • Hot dip galvanized,
  • Electro galvanized,
  • Black,
  • Bare,
  • Varnish coating
  • Anti rust oil, Protective Coatings
  • (Coal Tar Epoxy,? Fusion Bond Epoxy, 3-layers PE)

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