Anti-corrosion,coating,method, business, insurance Anti-corrosion coating method of spiral steel pipe
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Anticorrosion coating is uniform and compact coated with the coating on the metal surface of the pipe by the rust to corrosive media with a variety of isolated, spiral steel pipe corrosion is one of the most basic methods. Steel corrosion coating increasingly using composite or composite structure. These materials and structures to have good dielectric properties, physical properties, chemical stability and wide temperature range and so on.1, The outer wall of anti-corrosion coating: spiral steel pipe wall coating material types and conditions of use.Wall corrosion coating: In order to prevent pipe corrosion, reduce friction and improve the transmission capacity and the coated film of the tube wall. Common amine-cured epoxy coatings of epoxy and a coating thickness of 0.038 to 0.2 mm. To ensure a strong bond coating and the wall, the inner wall of the tube must be subjected to a surface treatment. Since the 1970s tend to inner tube, the outer wall of the same coating material selection, so that the tube inner and outer walls coated simultaneously. Corrosion insulation coating: heat, the small caliber in the output of crude oil or fuel oil pipeline, in order to reduce the heat pipe to the soil, outside the pipe insulation and corrosion plus a composite layer. Commonly used insulation material is a rigid polyurethane foam, a temperature of -185 ~ 95 . This material is soft texture, to increase its strength, insulation on the outside add a layer of high density polyethylene cladding layer, to form a composite structure, in order to prevent infiltration of groundwater within the insulation.2. The outer protective tube is polyethylene spiral pipe, and no further corrosionPolyethylene odorless, non-toxic, feel like wax, has excellent low temperature properties (lowest temperature up to -70 ~ -100 ), good chemical stability, resistance to most acid-base erosion (intolerance with oxidation properties acid), at room temperature, not soluble in common solvents, water absorption is small, but because of its linear molecules slowly dissolve in some organic solvents, and does not swell, excellent electrical insulation properties.Anti-corrosion coating steel products: crude oil on the heat input or fuel oil pipes, small diameter, in order to reduce the heat pipe to the soil, outside the pipe insulation and corrosion plus a composite layer commonly used insulation material is a rigid polyethylene. urethane foam, a temperature of -185 ~ 95 . this material is soft texture, to increase its strength, insulation on the outside add a layer of high density polyethylene cladding layer, to form a composite structure, in order to prevent infiltration of groundwater insulation layer. Article Tags: Spiral Steel Pipe, Anti-corrosion Coating, Spiral Steel, Steel Pipe, Composite Structure
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