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

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