Anti-corrosion steel refers embalmed process processing, can effectively prevent or mitigate the occurrence of steel pipes and tubes in the transport and use of chemical or electrochemical reactions during corrosion phenomena. Buried pipeline pipe coating process is as follows:
(1) First, the outer wall of the pipe fully embalmed, rust requires the same tube wall.
(2) Paint still use gray GZ-2 new polymer anti-corrosion coatings (Universal), paint and configuration instructions see the product manual.
(3) Large diameter spiral steel pipe wall corrosion using two layers of primer, two-story glass cloth, the total thickness of the floor finish should reach 480-620μm. .
(4) On the coated surface of the weld, remove burrs and other requirements.
(5) Priming should be uniform, not leak coated surface dry to topcoat, (usually 1-4 hours) for too long will affect the paint adhesion. If the primer is dry, use sandpaper to fight hair after FIG finish. Layers of paint applied to the margins of the film surface should be as well.
(6) Two-story glass cloth should be sandwiched between three finish, wrapped around a glass cloth should be smooth, uniform lap, soaked in paint to avoid wrinkles drum kit. Cloth wrapped around the glass and paint coating simultaneously.
(7) The tube wall paint should stay out of the provisional pipeline on both sides of each bracket 200mm range.
Coating
(8) Visual inspection should be full, even, bright, glass cloth mesh is filled with paint, to fold the blister should be repaired.
