Manufacturer direct sales of polyethylene anti-corrosion steel pipe and epoxy powder anti-corrosion steel pipe

Description :

　　Epoxy powder is a thermosetting, non-toxic coating that forms a high molecular weight cross-linked structure coating after curing. It has excellent chemical corrosion resistance and high mechanical properties, especially excellent wear resistance and adhesion. This coating is% solid, solvent-free, pollution-free, and has a powder utilization rate of over%. It is an anti-corrosion coating for buried steel pipelines. Dissolved epoxy powder coating is a new type of anti-corrosion coating developed in recent years, and FBE coating has two types: single-layer and double-layer. The so-called FBE coating generally refers to a single-layer dissolved epoxy coating. The single-layer FBE coating uses a specialized dissolved epoxy powder coating as the film-forming material, and is coated with epoxy powder coating using electrostatic spraying technology for one-time film-forming.

　　The anti-corrosion function of epoxy powder pipeline is twofold: anti-corrosion and drag reduction. One is mainly used on gathering and transportation pipelines, sewage treatment and reinjection pipelines with severe corrosion in oil fields, to extend the service life of pipelines and provide guarantees for oil development and production. It is usually small in diameter and short in distance. The internal coating technology aimed at reducing drag and energy consumption is applied in the West East Gas Pipeline Project in China. The drag reduction coating technology for natural gas pipelines is a new commercial technology with significant economic benefits. Although the parameter values vary from country to country, the conclusion is consistent. It is believed that the initial investment cost will yield several times the benefit. The larger the pipe diameter, the longer the line, and the larger the gas transmission volume, the higher the benefit. The single-layer fusion bonded epoxy powder anti-corrosion steel pipe FBE epoxy powder is first fully fluidized in a fluidized bed, and then electrostatically sprayed to make the powder particles negatively charged and uniformly adhered to the surface of the grounded preheated steel pipe. For a small amount of dispersed powder, it can be recovered through a recycling system without causing dust pollution. There is a coating called heavy-duty anti-corrosion epoxy powder coating in pipeline anti-corrosion, which can also be called fusion bonded epoxy powder. It is generally referred to as FBE in foreign countries. It was developed as early as the 1950s and industrialized production was achieved in the 1960s. After so many years of continuous improvement, this coating has become relatively mature. These all have application examples of fusion bonded epoxy powder. The "West East Gas Pipeline" project in China uses epoxy powder anti-corrosion steel pipes, which has led to significant development of heavy-duty anti-corrosion epoxy powder coatings in the country. Heavy duty anti-corrosion fusion bonded epoxy powder coating can be divided into powder for spraying inside pipelines, powder for spraying outside pipelines, powder for petroleum drilling pipes, and powder for three-layer structural anti-corrosion according to their applications Double layer fusion bonded epoxy powder anti-corrosion steel pipe.

　　Epoxy powder anti-corrosion steel pipes have a certain level of appearance when coated with epoxy powder as the main raw material. Due to the low melt viscosity of epoxy resin, the leveling of the coating is good, and at the same time, no by-products are produced during curing, making it easy to obtain a smooth coating. The physical and mechanical properties as well as chemical resistance of the coating are good, and it also has good electrical insulation. By selecting appropriate epoxy curing agents, powder coatings with good room temperature storage stability can be obtained. Epoxy resin has low melt viscosity, so during melt mixing and extrusion, the wetting between the resin and pigment is good, and the pigment is evenly dispersed; In addition, the melting temperature of the material is not significantly different from the softening point of the resin, which makes it less likely to produce "gelatinized" particles during the production process. Good electrostatic interaction. The characteristics of thermosetting powder are fully demonstrated. 1. The epoxy resin coated steel pipe is first subjected to pre-treatment on the base pipe. 2. Sandblasting the steel pipe, and sandblasting and rust removal on the surface of the steel pipe shall be carried out in accordance with BG/T to Sa21/2 levels to ensure roughness and improve adhesion. 3. Place the sandblasted steel pipe into an electric oven for preheating, and preheat it when the temperature reaches 200 ° C (usually for about an hour and a half). 4. Coating the preheated pipes - After coating, place them in a curing box for curing (hold for 15 minutes when the temperature reaches 200 degrees) to produce the finished product. Preheat the heating equipment to 180 degrees Celsius after spraying to cure the sprayed substrate. Epoxy resin composite steel pipe is a steel plastic composite product that uses steel pipe as the base pipe and plastic powder as the coating material. A plastic layer is melted and coated on the inner surface, and a plastic layer or other material anti-corrosion layer is melted and coated on the outer surface. Plastic coated steel pipes are divided into polyethylene coated steel pipes and epoxy resin coated steel pipes according to the different internal coating materials.

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• Polyethylene anti-corrosion steel pipe