3PE Pipeline Anti-corrosion Production Line

The process of 3-layer PE anti-corrosion is as follows:

Surface sandblasting-------medium frequency heating----epoxy powder coating-----adhesive extruder-----polyethylene extruder-----water cooling----online monitoring-----end grinding-----finished product stacking area

Complete set of equipment

This production line is equipped with comprehensive auxiliary equipment, such as steel pipe shot blasting and rust removal equipment, which can effectively remove rust, oil, and other impurities from the steel pipe surface, improving coating adhesion; automated spraying equipment can precisely control the coating application amount; and advanced detection equipment can perform real-time detection of coating thickness, bonding strength, and other quality indicators. These supporting equipment work together to ensure the smooth production process and the stability of product quality.

Excellent anti-corrosion performance

The 3PE anti-corrosion and insulation production line adopts a three-layer polyethylene anti-corrosion process. The bottom layer is a fusion bonded epoxy powder coating, which can chemically bond with the steel pipe surface, providing good adhesion and cathodic protection; the middle layer is an adhesive, acting as a bridge connecting the bottom layer and the outer polyethylene layer, enhancing the bonding strength between coatings; the outer layer is a polyethylene layer, which has excellent mechanical properties and resistance to environmental erosion. This three-layer structure works synergistically to effectively protect the anti-corrosion layer from corrosion by soil, water, chemical media, etc., greatly extending the service life of steel pipes, and is widely used in long-distance pipelines for oil, natural gas, and other fields.

Reliable coating quality

The production line is equipped with advanced automated control equipment, capable of precisely controlling key process parameters such as coating thickness, temperature, and coating speed. For example, through high-precision spraying equipment and an automated control system, the fusion bonded epoxy powder coating thickness can be uniform and consistent, with deviations controlled within a very small range. At the same time, the coating process of the adhesive and polyethylene layers can also be precisely adjusted, ensuring strong bonding between the three layers of coating, without defects such as air bubbles or voids, thereby ensuring stable and reliable overall coating quality.

High production efficiency

The production line adopts a continuous production method, from steel pipe pretreatment, coating application to finished product off-line, the entire process is smooth and efficient. For example, steel pipe preheating, coating, and curing are completed sequentially on the assembly line, reducing waiting time between processes. In addition, the production line equipment operates at high speed, such as high-speed extruders can quickly extrude the polyethylene layer, greatly increasing the output per unit time and meeting the demand for pipes in large-scale engineering construction projects.

Good environmental performance

During the production process, the 3PE anti-corrosion and insulation production line emphasizes environmental protection. For example, environmentally friendly fusion bonded epoxy powder and adhesives are used, reducing the emission of harmful volatile substances. At the same time, waste and exhaust gases generated during the production process are properly treated, reducing environmental pollution. Compared with some traditional anti-corrosion processes, the 3PE anti-corrosion process is more in line with modern environmental concepts and is conducive to sustainable development.

Wide range of applications

The 3PE anti-corrosion and insulation production line is not only suitable for steel pipes of various diameters, from small-diameter gas transmission pipes to super-large-diameter crude oil transmission pipes, but also adaptable to steel pipes of different materials, such as carbon steel, alloy steel, etc. At the same time, the structure and materials of the anti-corrosion and insulation layer can be adjusted according to different service environments and engineering requirements, meeting the diverse needs of multiple industries such as petroleum, chemical, electric power, construction, water supply, and sewage treatment.