What principle is used in anti-corrosion steel pipes?
Release time:
2022-01-04
Coating-based corrosion protection involves forming a uniformly dense coating on the surface of metal pipes after rust removal, which can isolate the pipe from various corrosive media. Increasingly, anticorrosive coatings for steel pipes are made using composite materials or composite structures. These materials and structures must exhibit excellent dielectric properties, physical performance, stable chemical behavior, and a wide operating temperature range.
Coating corrosion protection is a uniformly dense coating formed on the surface of metal pipes after rust removal, which can isolate them from various corrosive media. Anti-corrosion steel pipe Anti-corrosion coatings are increasingly using composite materials or composite structures, which must exhibit excellent dielectric properties, physical performance, stable chemical resistance, and a wide temperature range.
Types and application conditions of pipeline exterior coatings: The inner-wall anti-corrosion coating is applied to the inner surface of pipelines to prevent corrosion, reduce frictional resistance, and minimize energy loss. Commonly used coatings include amine-cured epoxy resins and polyamide-modified epoxy resins. The coating thickness typically ranges from 0.038 to 0.2 millimeters, ensuring that the coating adheres firmly to the pipe wall.
It is necessary to discontinue external treatment of the pipe’s inner wall. Since the 1970s, both the inner and outer walls of pipelines have been coated with the same material, allowing simultaneous coating of both surfaces. On medium- and small-diameter pipelines used for transporting heated crude oil or fuel oil, anti-corrosion coatings can be applied to reduce heat loss from the pipeline into the surrounding soil.
A composite insulation and anticorrosion layer is added externally to the pipeline. The commonly used insulation material is rigid polyurethane foam, which has a relatively soft texture. To enhance its strength, a high-density polyethylene layer is applied on the outer side of the insulation layer, forming a composite structural design that prevents public water from penetrating the insulation layer.
Yanshan Shisheng Tube-material Antiseptic Co., Ltd. is a specialized prefabrication contractor for pipeline engineering, integrating antiseptic treatment, thermal insulation, and pipe fitting. Its products include coated composite pipes, 3PP, 8710 antiseptic coatings, antiseptic steel pipes, TPEP, large-diameter antiseptic steel pipes, 3PE antiseptic steel pipes, coated steel pipes, and more. These products are widely used in industries such as petroleum, chemical industry, natural gas, water transmission and distribution, and thermoelectric power generation.
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