The processing of plastic-coated steel pipes requires numerous details, such as ensuring a uniform coating, ensuring that every surface is sprayed, and controlling the dipping time. To achieve this product, high-quality epoxy or polyethylene powders must be selected, and advanced processing technology and equipment are required. Strong support from national policies is also essential. Traditional technologies and production processes struggle to meet market demand. Currently, dozens of 3PE coating lines exist in China, capable of applying 3PE coatings to steel pipes ranging from 25 to 2800 mm in diameter. Plastic-coated steel pipes are coated with a protective plastic coating both inside and out, addressing the inherent corrosion, rust, and contamination issues inherent in the steel pipes. Important considerations for epoxy resin anti-corrosion paint application include: The base paint and curing agent are packaged in separate barrels and mixed according to the required ratio during application. The surface of the coated material must be thoroughly cleaned of oil, moisture, dust, and other contaminants, and kept clean and dry. The substrate temperature must be at least 3°C ​​above the dew point. If the substrate temperature is below 5°C, the paint film will not cure, making the application unsuitable.

Epoxy-coated steel pipes play a crucial role in building fire protection systems, gradually replacing galvanized steel pipes. Below, we’ll discuss the production process for epoxy-coated steel pipes, the properties of the epoxy resin powder, and the product performance of these pipes. During spraying, the epoxy resin powder hasn’t yet fully bonded to the inner and outer surfaces of the substrate. A 30-minute preheating and curing period allows the curing agent in the epoxy resin to fully solidify, resulting in stronger coating adhesion and fully demonstrating the thermosetting properties of the powder. The tightly adhered chromium-rich oxide on the inner and outer plastic-coated steel pipes protects the surface from further oxidation. Wire and pipe products can be broadly categorized into the following: metal materials, such as plastic-coated steel pipe (buried cable casing) and galvanized steel pipe; Viron cement pipe; fiberglass reinforced plastic pipe; and plastic pipe. But what are the characteristics of plastic-coated composite steel pipes? Large-diameter plastic-coated steel pipes offer advantages over other pipes, including a smooth surface, excellent drainage, low fluid resistance, and resistance to scaling, significantly reducing losses. Plastic-coated steel pipe is a highly sought-after type of corrosion-resistant pipe. The curing agent in the epoxy resin is fully cured, resulting in stronger coating adhesion on both the inner and outer walls, fully demonstrating the properties of the thermosetting powder.

During installation, it is also relatively easy to use and offers a variety of connection methods. This is because the chromium alloying treatment of the steel changes the surface oxide type to one similar to that formed on pure chromium metal. Any issues should be promptly addressed with the design and relevant personnel, and change negotiation records should be kept. According to the design paper, a construction draft of the plastic-coated pipe, including branch routes, pipe diameters, reducers, reserved pipe openings, and valve locations, should be drawn. The actual installation locations should be marked. The exact dimensions of the installation should be measured in sections according to the markings, recorded on the construction draft, and then prefabricated according to the measured dimensions. Method: physical sandblasting method. The deoxidizer is not good, or the dosage is insufficient, or the operation is improper. How to choose a steel-plastic composite pipe. The deoxidizer is not good, or the dosage is insufficient, or the operation is improper. How to choose the steel-plastic composite pipe pretreatment chemical immersion tank method, or the physical sandblasting method? The deoxidizer is not good, or the dosage is insufficient, or the operation is improper. How to choose the steel-plastic composite pipe pretreatment chemical immersion tank method, or the physical sandblasting method? Pretreatment chemical immersion tank method, physical sandblasting method. Pretreatment chemical immersion tank method, physical sandblasting method. Compared with traditional steel pipes, plastic-coated steel pipes are a composite material formed by spraying chemical raw materials on the steel pipe wall through a special process and then curing at high temperature.