3PE Coated Pipe

3PE Coated Pipe
Our 3PE Coated Pipe is a high-performance piping solution, featuring a three-layer polyethylene coating (epoxy primer + adhesive + polyethylene) for superior corrosion resistance and durability.
The 3-layer structure forms a robust barrier against moisture, chemicals, mechanical impact and UV radiation, widely applied in oil & gas transmission, water supply, underground and offshore pipeline projects.

Compliant with international standards, it ensures long service life, reduces maintenance costs, and delivers reliable performance in harsh working environments, serving as an ideal choice for critical piping systems.



Description

PP three-tier structure of anti-corrosion pipeline: the first layer of epoxy powder (FBE50 - 100um), the second adhesive (AD) 250 - 400um, the third layer of polypropylene (PP) 1.4 - 4.0mm. Three of the integration, and steel pipe with a good solid coating, Coating temperature up to 110 degrees.

3PE anti-corrosion and single-layer PE anticorrosive

1. 3PE anticorrosive:

Three-layer structure of PE pipe corrosion: the first layer of powder epoxy ( FBE > 100um ), the second layer of adhesive

(AD ) 170～250um, a third layer of polyethylene or polypropylene 2.5～3.7mm. Three materials integration, and with the

steel firm toform an excellent coating.

2. Single PE anti-corrosion steel:

single layer PE is the use of anti-corrosion steel curtain coating process ( also known as curtain method ), the steel pipe

after rotation frequency heating, steel top is fitted with a polyethylene powder container by pouring dusted steel tube surface


Speiication


Nominal Diameter of Steel Pipe (DN)

Epoxy Coating

Adhesive Layer

Min Thickness of Anti-Corrosion Layer (mm)

(mm)

(a/μm)

(mm)/μm

General Type

Strengthen Type

DN≤100

≥120

≥170

1.8

2.5

100< DN≤250



2.0

2.7

250< DN<500



2.2

2.9

500≤DN<800



2.5

3.2

DN≥800



3.0

3.7


Standard

DIN 30670 for three-layer extruded and one-or mult-layered sintered polyethylene-based coatings

DIN 30671 thermoset plastic coating for buried steel pipes

DIN 30678 polypropylene coatings for steel pipes

CAN/CSA Z245.20/-Z245.21-02 external fusion bond epoxy coating for steel pipe/external polyetlene coating for pipe

SY/T4013-2002 for transport water, gas, oil, pilling coating

SY/T0315-97 PE coating for buried steel pipe


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