Epoxy powder anticorrosive steel pipes have excellent anticorrosive properties, and have been widely used in different areas of people's production and work.
Epoxy resin is a very common preservative. Epoxy powder anti -corrosion spiral steel tube is cured, short, short time, and high coating efficiency. The entire production process is operated by assembly lines. The coating can use electrostatic spraying technology technology to form a film at a time. Epoxy powder anti -corrosion spiral steel tubes are very good and alkaline, and can work normally within a very loose temperature range. The coating has no pollution, impact resistance, high temperature resistance, and good bending performance.
Epoxy powder anticorrosive spiral steel pipes are widely used in oil, chemical, natural gas, heat, sewage treatment, drinking water supply, marine facilities, construction, mines and other fields.
Corrosion refers to the influence of metal materials and environmental media on the chemical and electrochemical effects of the metal surface, causing the degradation and destruction of the material. The common corrosion of pipelines is mainly caused by corrosive substances such as dissolving carbon dioxide, H2S, C1, a small amount of dissolved oxygen and bacteria. These substances are directly related to metal and cause chemical corrosion.
3PE anti -corrosion steel pipes first spray epoxy primer on the surface of the steel pipe, and then send the steel pipe into the coating area at a certain speed. For the first time, the glue film with a certain thickness and density is squeezed out, which wraps it on the surface of the steel pipe. When the adhesive is still melting, the second extruder is squeezed out of the polyethylene film, and it wraps it around the adhesive to form coatings.
The structure of the three -layer polyethylene anticorrosive coating is: the bottom layer is FBE, the thickness is about 50 to 128 mm, the middle layer is common polyture, about 200 mm thick, the outer layer is polyethylene, and the thickness is about 3 mm. This structure combines the high adhesion, oxygen resistance, chemical corrosion resistance, chemical resistance, and cathode poleness of the FBE. It has outstanding advantages such as strong adhesion on the surface of the pipeline, good electrical insulation, impact resistance, and long service life. The cathode protection current density is small, only 1 ~ 38A/m2.
From the perspective of long -term development, excellent cost performance is very obvious. 3PE anticorrosive steel pipe structure: The first layer is epoxy powder (FBE> 100um), the second layer is a binder (concentral adhesive) 170 ~ 250um, and the third layer is 2.5 ~ 3.7 mm of polyethylene (PE). The three materials are closely integrated, closely combined with the steel pipe, forming a fine tube wall, and preheating according to the epoxy powder process. When the powder is contacted with the tube wall, the powder will melt and adhere to the tube wall, and then use a pump to reduce the temperature in the tube and reduce the number of powder adhesion to the tube wall.
