How to prevent corrosion outside the steel-lined plastic storage tank

Steel-lined plastic storage tanks have the advantages of no welding seams, no leakage, non-toxicity, anti-aging, impact resistance, corrosion resistance, long life, and compliance with sanitary standards. However, they will corrode over time under the influence of external conditions. We need to take anti-corrosion measures for it, not only for the inside of the tank, but also for the outside of the tank. Someone asked how to prevent the outside of the tank. This is the answer:

　 In order to match the working conditions of steel-lined plastic storage tanks, the coating used on the bottom surface of the steel-lined plastic storage tank bottom surface needs to choose anti-corrosion coatings with good wear resistance. The coatings commonly used on the bottom surface of the floor in China include epoxy resin asphalt anticorrosive coating, liquid epoxy coating, polyurethane coating and so on. Polyurethane coatings have low hardness and are generally not used. Due to construction requirements, the outer side of the steel-lined plastic storage tank bottom surface needs to be painted with paint on the bottom surface of the bottom plate before welding. It is necessary to select a solder-resistant coating with good heat resistance. Liquid epoxy coatings are more susceptible to damage when heated during welding. The epoxy resin asphalt anticorrosive coating has good welding resistance and anticorrosion performance, and can withstand high temperatures in a short time without scorching or falling off. The contact part between the bottom plate of the steel-lined plastic storage tank and the tank foundation is sealed with epoxy glue, and then the epoxy resin asphalt anticorrosive paint is used for waterproofing.