The 3PP means three layers of PP coating.
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.
Coating temperature up to 110 degrees.
Φ159 - Φ1220
Widely used in high surface temperature, according to the region longer underground water, gas, oil pipelines.
Pipe inspection → Derusting Test Pipe driving→ Secondary dedusting → Preheating→ Epoxy powder coating→ Gluing→ Painting PP→ Cooling stereotypes→ Ends processing final test Stacking.