Buried 3PE anticorrosive steel pipe is a kind of steel pipe widely used in underground pipeline anti-corrosion, and its full name is three-layer polyethylene anti-corrosion steel pipe. The structure of this steel pipe is composed of three layers, the inner layer is an ordinary steel pipe, the middle layer is an epoxy coal asphalt anti-corrosion layer, and the outer layer is a polyethylene anti-corrosion layer. The anti-corrosion performance of this kind of steel pipe is very good, which can effectively prevent the corrosion of groundwater, soil and other media on the steel pipe, thereby prolonging the service life of the steel pipe.
The advantage of buried 3PE anti-corrosion steel pipe is its excellent anti-corrosion performance and long service life. Due to its three-layer anti-corrosion structure, it can effectively resist various chemical corrosion and microbial erosion, thus ensuring the safety and reliability of the pipeline during use. In addition, the smooth surface of this steel pipe is not easy to adhere to dirt and impurities, and it is easy to clean and maintain, further improving its service life.
The application range of buried 3PE anticorrosive steel pipe is very wide. It can be used for anti-corrosion of underground pipelines in the fields of oil, natural gas, chemical industry, urban water supply and drainage. In these fields, the anti-corrosion problem of underground pipelines has always been one of the key factors affecting the safety and longevity of pipelines. The emergence of buried 3PE anticorrosive steel pipe provides an effective solution to solve this problem.
The production process of buried 3PE anticorrosive steel pipe mainly includes the following steps: pretreatment of ordinary steel pipe, coating primer, heating, coating intermediate paint, heating, coating topcoat, winding polyethylene film, heating and melting, cooling hardening, etc. Among them, the steps of coating primer, heating, coating intermediate paint, heating, and coating topcoat are the key links to ensure the quality of the anti-corrosion layer. In the production process, it is necessary to strictly control the process parameters such as temperature, pressure, and time to ensure that the coating is uniform, smooth, free of bubbles, cracks and other defects.
The quality inspection of buried 3PE anticorrosive steel pipe mainly includes the inspection of appearance quality, thickness, adhesion and other aspects. The appearance quality inspection mainly checks whether the surface of the steel pipe is smooth, flat, free of bubbles, no cracks and other defects;Thickness detection mainly detects whether the thickness of the anti-corrosion layer meets the standard requirements;The adhesion test mainly detects whether the adhesion between the anti-corrosion layer and the surface of the steel pipe meets the requirements. Only after strict quality testing can the quality and reliability of buried 3PE anticorrosive steel pipes be guaranteed.
Buried 3PE anticorrosive steel pipes need to pay attention to some details during construction and installation. For example, special connectors need to be used when connecting pipes to ensure the tightness and firmness of the joints;During the installation process, it is necessary to avoid hard objects scratching and colliding with the surface of the steel pipe to avoid damageWhen backfilling, it is necessary to use fine soil or sand for backfilling to avoid damage to the steel pipe caused by hard objects or sharp objects. The handling of these details is very important to ensure the service life and safety of buried 3PE anticorrosive steel pipes.
In short, as a new type of underground pipeline anti-corrosion material, buried 3PE anti-corrosion steel pipe has excellent anti-corrosion performance and long service life, which can effectively solve the anti-corrosion problem of underground pipelines. With the continuous promotion of its application and the continuous progress of technology, it is believed that the buried 3PE anticorrosive steel pipe will play a more important role in the future and make greater contributions to China's pipeline safety and environmental protection.