What is the anti-corrosion standard of 3PE anti-corrosion steel pipe?

3PE anti-corrosion steel pipe polyethylene three-layer structure protective layer, also known as three-layer PE (3PE), is an advanced anti-corrosion technology imported from abroad in recent years. Its full name is fused epoxy / extruded polyethylene structure protective layer. The structure is composed of the following three layers: the bottom layer is fused epoxy (≥80μm); the middle layer is adhesive (170-250μm); the surface layer is extruded Polyethylene (about 2mm). The total thickness of the protective layer is about 1.8-3.7mm. In the three-layer structure, the main function of the sintered epoxy powder coating is to form a continuous coating film and directly bond to the surface of the steel pipe, which has good chemical resistance and anti-cathode peeling performance; and the intermediate layer of adhesive The reactive groups react to form a chemical bond, ensuring that the overall anti-corrosion layer has good adhesion at higher temperatures. The intermediate layer is usually a copolymer binder, the main component of which is polyolefin, and currently a vinyl copolymer adhesive is widely used. The functional part of the polar part of the copolymer adhesive and the epoxy group of the sintered epoxy powder coating can react to form hydrogen bonds or chemical bonds, so that the intermediate layer and the bottom layer form a good bond; the non-polar ethylene part and the surface layer Polyethylene has a good affinity, so the middle layer and the surface layer also have good adhesion properties. The main function of the polyethylene surface layer is to play a role in mechanical protection and anti-corrosion, which has the same effect as the traditional two-layer polyethylene anti-corrosion layer.

3PE anti-corrosion steel pipe structure: the first layer of epoxy powder (FBE> 100um), the second layer of adhesive (copolymer) 170-250um, and the third layer of polyethylene (PE) 2.5-3.7mm. These three materials are tightly fused together and firmly combined with the steel pipe to form an excellent anti-corrosion layer. 2PE anti-corrosion steel pipe: the two-layer PE anti-corrosion structure of the pipeline, the first 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 the three-layer PE. Thickness: 1.7-2.5 Pipe diameter range Φ60 ～ Φ1420

Anti-corrosion standard: SY/T0413-2002

Advantages: 1. 3PE anti-corrosion steel pipe has extremely high tightness, long-term operation can greatly save energy, reduce costs and protect the environment. 2. Strong corrosion resistance, simple and fast construction, and service life of up to 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 PE water absorption and good hot melt adhesive flexibility, etc., and has high corrosion resistance.