3PE anticorrosive pipeline structure: one layer of epoxy powder (FBE>100um), the second layer of adhesive (copolymer) 170～250um, and the third layer of polyethylene (PE) 25～37mm. These three materials are closely integrated and firmly combined with the steel pipe to form an excellent anti-corrosion layer. 2PE anticorrosive pipeline: the pipeline has two layers of PE anticorrosion structure, one layer of adhesive (AD), the second layer of polyethylene (PE), the two materials are integrated, and the thickness of each layer is the same as that of the three layers of PE. Three-layer PE anticorrosive structure of the pipeline: one layer of epoxy powder (FBE>100um), the second layer of adhesive (AD) 170～250um, and the third layer of polyethylene (PE) 25～37mm. The three materials are integrated and firmly combined with the steel pipe to form an excellent anti-corrosion layer. The pipe diameter ranges from Φ60 to Φ1420, and the wall thickness ranges from 25-18mm. This is a relatively good anti-corrosion method. Generally, it can increase the service life of 50 years, which not only prolongs the replacement cycle of underground pipeline equipment, but also greatly saves costs. State building has provided a powerful role! 3PE anti-corrosion is the most commonly used anti-corrosion method. In addition, there are 2PE, 2PP, 3PP. Their manufacturing processes are similar, but the raw materials are different. The characteristics of this kind of anti-corrosion are simple production process, good anti-corrosion effect, low price, and it is pipe manufacturing. Anti-corrosion method generally recognized by the industry.
Advantages of 3PE anticorrosive steel pipe:
1. PE anticorrosive pipeline has extremely high sealing performance, long-term operation can greatly save energy, reduce costs and protect the environment.
2. Strong corrosion resistance, simple and quick construction, and the service life can reach 30-50 years.
3. It also has good corrosion resistance and impact resistance under low temperature conditions, and the PE water absorption rate is low (less than 0.01%).
4. At the same time, it has high epoxy strength, low water absorption of PE and good softness of hot melt adhesive. It has high anti-corrosion reliability. The disadvantage is that it is expensive compared with the cost of other splicing materials.