TPEP anti-corrosion pipeline coating anti-corrosion is to use paint to evenly and densely coat the surface of the metal pipeline after derusting, so as to separate it from various corrosive media, which is one of the basic methods of steel pipe anti-corrosion. TPEP anti-corrosion pipeline anti-corrosion coatings are increasingly using composite materials or composite structures. These materials and structures must have good dielectric properties, physical properties, stable chemical properties, and a wide temperature range.
(1) Anti-corrosion coating on the outer wall: types and conditions of use of coating materials on the outer wall of the pipeline.
(2) Anti-corrosion coating on the inner wall: a film applied to the inner wall of the pipe in order to prevent corrosion inside the pipe, reduce frictional resistance, and increase throughput. Commonly used materials are epoxy resin powder and polyamide epoxy resin, and the coating thickness is 200-800 microns. In order to ensure that the coating is firmly bonded to the pipe wall, surface treatment must be carried out on the inner wall of the pipe. Since the 1970s, the same material has been used for the coating of the inner and outer walls of the pipe, so that the coating of the inner and outer walls of the pipe can be carried out at the same time.
TPEP anti-corrosion pipeline is an upgraded product based on the outer single-layer polyethylene inner epoxy composite steel pipe. It is an excellent steel pipe anti-corrosion form for buried long-distance pipelines. New anti-corrosion production line for large-diameter pipelines. The outer wall adopts thermal fusion winding process, the bottom layer epoxy resin, the middle layer adhesive, and the outer layer polyethylene form a three-layer anti-corrosion layer. The inner wall adopts thermal spraying epoxy powder anti-corrosion method. After high-temperature heating and sintering, it is evenly coated on the surface of the pipe body to form a steel-plastic alloy layer, referred to as TPEP steel pipe, (T, the initial letter of Three in English, PE refers to polyethylene, and EP refers to epoxy resin). Improve the coating adhesion and coating thickness, and enhance the ability of anti-collision and anti-corrosion. The price of TPEP steel pipe is almost the same as that of single-layer polyethylene inner fusion bonded epoxy composite steel pipe, and the corrosion resistance is increased by 3-5 times.
Advantages of TPEP anti-corrosion pipeline:
1. TPEP anti-corrosion pipelines are excellent anti-corrosion products at home and abroad, with a service life of more than 50 years. The outer 3PE anti-corrosion is the introduction of Russian technology, which has a history of nearly 100 years. The inner coating is thermal fusion epoxy powder coating, and the imported Japanese technology has a history of 70 years.
2. The inner wall is smooth, and the roughness is 0.0081-0.0091 (tested by the Academy of Sciences). The head loss is small. For conveying the medium with the same flow rate, the caliber can be reduced by one level.
3. Strong ability to adapt to terrain. The steel pipe has strong flexibility.
4. Simple and reliable installation. The length of a single pipe can reach 12 meters, and the connection port is reduced by half.
5. The inner wall is smooth and does not scale.