Spray type polyurethane Including Primer and synthetic resin And direct spraying and foaming polyurethane spraying. The paint directly sprayed with primer and synthetic resin is mainly used for anti-corrosion, wear resistance, sealing, heat preservation, etc., which is characterized by good wear resistance, excellent erosion resistance 25μ To several millimeters, it can be spray molded at one time without sagging.
Polyurethane spraying, high pressure polyurethane Spraying equipment 。 Because the materials of high-pressure spraying equipment collide at high speed and rotate violently in the mixing room with small space, the mixing is very full. High speed moving materials form fine mist droplets at the nozzle and spray evenly onto the surface of the object.
Foamed polyurethane spraying is mainly used for heat preservation and sealing. In terms of heat preservation and refrigeration, it is not easy to use molds, such as large spherical storage pot The coating of thermal insulation materials such as large-diameter special-shaped pipe fittings and cold storage walls can realize on-site foaming.
For various shapes of substrate, whether it is plane, elevation or top surface, whether it is round, spherical or other complex objects with irregular shapes, spray foaming processing can be directly carried out without expensive mold manufacturing costs;
（ two ）The shape of the foam insulation layer formed by spraying foaming is consistent with the shape of the substrate object; No joint, good heat insulation effect; There is a dense protective layer outside the foam layer, which can better protect the internal core material, and it is also easy to paint and further repair the external surface;
（ three ）High production efficiency, especially suitable for heat insulation treatment of large-area, special-shaped objects, with fast forming speed and high production efficiency.
（ four ）Cohesion : Strong adhesion ability , It can be firmly bonded on the surface of concrete, masonry, wood, steel, asphalt, rubber, etc
?? The troubles in construction also ensure a beautiful and smooth appearance.
3. Low thermal conductivity of iron sheet insulation pipe: this is determined by its closed bubble structure. It does not absorb water or has very low water absorption, effectively preventing water vapor from penetrating the pipe wall.
4. Green environmental protection and heat preservation of iron sheet heat preservation pipe: no waste, waste water, waste residue and other pollutants are produced in the use of the project, and the flame retardancy is very good, which can effectively alleviate aging.
