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Steel pipe outer polyethylene 3PE, inner epoxy resin anticorrosion

2PE/3PE anti-corrosion structure: electrostatic spraying epoxy powder on the surface of the steel pipe and laterally wound adhesive and laterally wound polyethylene anticorrosive layer, combining the excellent performance of the three, thus significantly improving the overall quality of the anticorrosive pipeline. It is resistant to chemical corrosion, cathodic disbondment and mechanical damage.
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cp1008
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Epoxy internal anticorrosive steel pipe

Production processing range φDN80—ΦDN1800

2PE/3PE anti-corrosion structure: electrostatic spraying epoxy powder on the surface of the steel pipe and laterally wound adhesive and laterally wound polyethylene anticorrosive layer, combining the excellent performance of the three, thus significantly improving the overall quality of the anticorrosive pipeline. It is resistant to chemical corrosion, cathodic disbondment and mechanical damage.

Before the base material of 2PE/3PE anticorrosive steel pipe is subjected to anticorrosion treatment, it is necessary to inspect and record the steel pipe entering the pipe inlet platform, perform shot blasting to remove rust on the outer surface of the steel pipe, and then check whether the cleanliness and anchor depth of the outer surface of the steel pipe are consistent Requirements, if it does not meet the requirements, it is qualified by hand-grinding and repairing. Wrap tape on the end of the pipe, treat it with fine dust, heat it to the required temperature at medium frequency, spray epoxy powder, wind on the side of the adhesive extruder, and wind on the side of the PE extruder. Water cooling of the anticorrosive pipes, spray marking of qualified products, and the down-pipe platform and stacking are to be shipped.

The 3PE anticorrosive steel pipe has a wide range of applications, and it is suitable for underground coal mine water supply and drainage, underground spraying, positive and negative pressure ventilation, gas drainage, fire sprinkler and other pipe networks. Process water waste residue and return water conveying pipeline in thermal power plant. It has excellent applicability to the water supply pipeline of anti-sprinkling and sprinkling system. Cable protection sleeves for power, communications, highways, etc. It is suitable for high-rise building water supply, heating network heating, tap water engineering, gas transportation, buried water transportation and other pipelines. Process pipelines for transporting corrosive media in industries such as petroleum pipelines, chemical pharmacy, printing and dyeing industries. Sewage treatment discharge pipes, sewage pipes and biological pond anticorrosion projects. For agricultural irrigation pipes, deep well pipes, drainage pipes and other networks, it can be said that 3PE anticorrosive steel pipes are indispensable in the current construction, and it is believed that through the extension of science and technology, it will have more brilliant achievements in the future.

The coating prepared by using epoxy resin as the film-forming substance and adding a certain amount of pigments, fillers, additives, solvents, etc. is called epoxy resin anti-corrosion coating. Since the epoxy resin molecular structure contains highly polar hydroxyl and ether bonds, the coating film has good chemical resistance, good alkali resistance, and better heat-resistant alkaline medium. Because its structure contains rigidity and alternate arrangement of benzene rings and head-shaped hydrocarbon chains, the physical and mechanical properties of the coating film are also quite good. Due to the presence of polar groups, the coating film will have a certain degree of hydrophilicity. If the formula is selected properly, a coating film with good water resistance can also be obtained. There are many types of epoxy resin anticorrosive coatings, and the most widely used are amine or its derivatives cured epoxy coatings and asphalt epoxy anticorrosive coatings. In recent years, solvent-free epoxy resin anti-corrosion coatings have been applied, and water-emulsion epoxy resin anti-corrosion coatings are very promising.

After curing, it has excellent mechanical properties, chemical resistance, excellent electrical properties and excellent heat resistance.

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