Manufacturer of epoxy coal tar anti-corrosion steel pipes for sewage treatment

Description :

　　Epoxy coal tar anti-corrosion steel pipes have excellent electrical insulation, water permeability resistance, microbial erosion resistance, stray current resistance, heat resistance, and resistance to sudden temperature changes. The coating can be used between -4150. It is mainly used for anti-corrosion of the outer walls of buried or underwater oil, gas, water, and thermal pipelines. It is also suitable for anti-corrosion of various steel structures, docks, ships, water gates, gas storage tanks, equipment in refineries and chemical plants, as well as leakage prevention of sewage tanks, roof waterproof layers, and basement concrete layers. -What are the requirements for outdoor painting projects. When painting outdoor projects, the temperature should not be lower than 10 or higher than 30, and the relative temperature should generally be below 75. There should be no sandstorms, light rain, fog, or frost, and construction should be avoided under harsh conditions. -Special internal and external epoxy coal tar anti-corrosion steel pipes for sewage pipelines

　　Epoxy coal tar anti-corrosion coating is composed of two main components: epoxy and coal tar. It is a two-component coating of A (epoxy) and B (curing agent), which has excellent adhesion, toughness, resistance, water resistance, and resistance to chemical media. It has the performance of preventing various ions from passing through the paint film and has the same shrinkage characteristics as the coated object. The paint film never falls off or cracks. Thickness 0.51.0mm. Epoxy coal tar is a cost-effective form of anti-corrosion, and engineering tests have shown that using epoxy coal tar combined with cathodic protection. Oil and gas pipelines have been used for 20 years without any corrosion. Under low-temperature conditions for construction and film formation, the solvent evaporates slowly, making it difficult for the coating to fully escape the solvent. This increases the volume between polymer chains, allowing corrosion factors to penetrate the coating and reduce its corrosion resistance. If the residual solvent is hydrophilic alcohols, alcohol ethers, etc., the water resistance of the coating will significantly decrease. Reactive coatings (such as epoxy, polyurethane, etc.) may not fully react at low temperatures (due to the difficulty of high molecular motion in the coating, active groups cannot fully collide). Even if some reactions occur, when the glass transition temperature of the coating approaches the temperature, it is difficult to further react and form a high-performance coating. Moreover, insufficient solvent evaporation and residual active genes (such as amino and amino groups) affect the water resistance of the coating film.

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• Epoxy coal tar anti-corrosion steel pipe