3PE Coating Pipe

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

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

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