3LPE Coating Pipe Production Line with High-pressure Airless Spray for 114-4200mm Pipe Diameter and Sa2.5 Cleaning Level

Internal Anticorrosion Epoxy Liquid Spray Coating Line for line pipe corrosion protection

 Internal Pipeline Coating:
The internal coating of line pipe serves as a critical anti-corrosion barrier, isolating the steel surface from transported media such as oil, gas, and water to prevent chemical and electrochemical corrosion. It also reduces flow resistance, maintains product purity, inhibits scaling and deposit buildup, and ultimately extends pipeline service life while lowering long-term operating and maintenance costs.

Coating Structure and Application Process:
The coating system typically consists of a multi-layer structure applied over a meticulously prepared surface.

After abrasive blast cleaning to achieve optimal anchor profile and cleanliness, a liquid epoxy primer—often a two-component, high-performance formulation—is uniformly sprayed onto the interior surface. This primary layer provides chemical resistance and adhesion, and may be supplemented with functional topcoats for enhanced abrasion or fouling resistance. The applied coating is then cured to form a continuous, smooth, and durable protective lining.

Production Line Specifications:
(1) Pipe Diameter Range: 114 mm - 4200 mm
(2) Processing Capacity: ≤250 m²/h
(3) Cleaning Standard: Sa 2.5 Grade
(4) Materials Used: Epoxy Powder, Adhesive, Polyethylene, Epoxy Coating (Single-Component, Two-Component)

Main Equipment (Please contact us for customizing your production line)