The Difference Between 3PE Anti-Corrosion And Epoxy Anti-Corrosion

Anti-corrosion steel pipe is a type of pipe that has been treated with anti-corrosion, mainly including 3PE anti-corrosion steel pipe (3PE coating), epoxy coal pitch anti-corrosion steel pipe, among which 3PE anti-corrosion and epoxy coal pitch anti-corrosion are the most popular on the market. What are the differences between 3PE anti-corrosion steel pipes and epoxy coal pitch anti-corrosion steel pipes? What is the method to distinguish between 3PE anti-corrosion steel pipe and epoxy coal pitch anti-corrosion steel pipe?
Anti-corrosion spiral steel pipe
1. The processing technology and processing technology are different.
During the production and processing of 3PE anti-corrosion steel pipes, epoxy powder is sprayed onto the heated steel pipes. During the curing process of the epoxy powder gel, the adhesive is wound, and then the polyethylene is wound, and then cooled by water to complete the 3PE anti-corrosion; most of the oxy-coal tar asphalt anti-corrosion steel pipes are manually sprayed with anti-corrosion paint on the steel pipe to form an anti-corrosion layer.
Under normal circumstances, epoxy coal pitch anti-corrosion steel pipes are generally brushed manually, and glass cloth is also manually applied.
2. The thickness of the anti-corrosion layer is different.
SY/T 0447-1996 is the selected standard suitable for the production of epoxy coal pitch anticorrosive coatings. According to this standard, the thickness of ordinary anti-corrosion coating is ≥0.20mm, and the thickness of enhanced anti-corrosion coating is ≥0.40mm. The grade anti-corrosion thickness is ≥0.60mm; and the anti-corrosion layer thickness of 3PE anti-corrosion steel pipe, if it is low, can also reach 1.5mm, which has an advantage in the anti-corrosion layer thickness.
3. Different application scopes.
3PE anti-corrosion spiral steel pipe has the advantages of strong corrosion resistance, high sealing performance, low PE water absorption, good mechanical properties, good electrical insulation properties, and short continuous anti-corrosion construction period. Therefore, 3PE anti-corrosion steel pipes are mainly used in water supply projects and gas transmission. Buried water supply pipelines, etc.; and epoxy coal pitch is a high-performance anti-corrosion coating, which is smooth, dense, hard, strong adhesion, salt-alkali resistance, sea water resistance, soil microbial corrosion resistance, combination of anti-corrosion coating and glass fiber, etc.