3pe anti-corrosion steel pipe factory direct sales

Anti-corrosion technology combines the excellent properties of epoxy coating and extruded polyethylene anti-corrosion layers, combining the interface properties and chemical resistance properties of epoxy coating with the mechanical protection properties of extruded polyethylene anti-corrosion layer, thus Significantly improved respective performance. Its characteristics: high mechanical strength, wear resistance, corrosion resistance, heat resistance, cold resistance, can be used in high-temperature media, and is suitable for cold areas.
Many people only know one of the uses of anti-corrosion steel pipes but don’t know the other. Its functions really cover a wide range. It is suitable for underground water supply and drainage in coal mines, underground grouting, positive and negative pressure ventilation, and gas drainage. , fire sprinkler and other pipe networks. Thermal power plant process water waste residue and return water transportation pipelines. It has excellent applicability for water supply pipelines in anti-sprinkler and sprinkler systems. Cable protection sleeves for power, communications, highways, etc. It is suitable for pipelines such as water supply in high-rise buildings, heating network heating, tap water projects, gas transmission, and underground water transmission. Process pipelines for transporting corrosive media in petroleum transportation pipelines, printing and dyeing and other industries. Sewage treatment discharge pipes, sewage pipes and biological pool anti-corrosion projects. For agricultural irrigation pipes, deep well pipes, drainage pipes and other network purposes, it can be said that anti-corrosion steel pipes are indispensable in current construction, and I believe that through the extension of technology, they will have more brilliant achievements in the future.
Anti-corrosion steel pipes have a wide coverage and are suitable for underground coal mine water supply and drainage, underground grouting, positive and negative pressure ventilation, gas drainage, fire sprinkler and other pipe networks. Thermal power plant process water waste residue and return water transportation pipelines. The outer wall anti-corrosion of steel pipes generally consists of a layer structure: the first layer of epoxy powder (Bm), the second layer of adhesive (D)~m, and the third layer of polyethylene.~m In actual operation, the three materials are mixed and integrated. It is processed to be firmly combined with the steel pipe to form an excellent anti-corrosion layer. Its processing methods are generally divided into two types: winding type and round die covering type. Currently, countries around the world attach great importance to the research on corrosion control issues, and have also achieved many results in the field of pipeline anti-corrosion coating. Various new materials and new technologies are constantly emerging. . The anti-corrosion steel pipe polyethylene three-layer structural protective layer, also known as three-layer, is an advanced anti-corrosion technology introduced from abroad in recent years.
The anti-corrosion method of anti-corrosion steel pipes generally uses coating anti-corrosion. Coating anti-corrosion is to apply coating evenly and densely on the surface of the rust-removed metal pipe to isolate it from various corrosive media. It is a steel pipe One of the most basic methods of anti-corrosion. Steel pipe 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 adaptation range.
, External wall anti-corrosion coating: types of pipeline outer wall coating materials and usage conditions.
②Inner wall anti-corrosion coating: A thin film coated on the inner wall of the pipe in order to prevent corrosion inside the pipe, reduce friction resistance and increase output. Commonly used coatings include amine-cured epoxy resin and polyamide epoxy resin, and the coating thickness is ~.mm. In order to ensure that the coating is firmly bonded to the pipe wall, the inner wall of the pipe must be surface treated. Since the 1990s, there has been a tendency to use the same material for the inner and outer wall coatings of pipes, so that the coating of the inner and outer walls of the pipe can be carried out at the same time.
③Anti-corrosion and thermal insulation coating: On medium and small-diameter thermal pipelines transporting crude oil or fuel oil, in order to reduce the heat dissipation of the pipeline to the soil, a composite layer of insulation and anti-corrosion is added to the outside of the pipeline. The commonly used insulation material is rigid polyurethane foam, and its applicable temperature is ~℃. This material has a soft texture. In order to increase its strength, a high-density polyethylene layer is applied outside the insulation layer to form a composite material structure to prevent groundwater from penetrating into the insulation layer.
If the outer protective pipe is a polyethylene pipe, no anti-corrosion is required
Polyethylene is odorless, non-toxic, feels like wax, and has excellent low-temperature resistance (the lowest operating temperature can reach ~℃) , good chemical stability, resistant to erosion by most acids and alkalis (not resistant to acids with oxidizing properties), insoluble in general solvents at room temperature, and has low water absorption, but because it is a linear molecule, it can be slowly soluble in some organic solvents, and No swelling occurs and excellent electrical insulation properties.
Anti-corrosion pipeline: It is a pipeline in which anti-corrosion medium (layered polyethylene) is applied to the outer wall of the steel pipe required by the project after rigorous rust removal treatment. Anti-corrosion is currently the most advanced and mature exterior wall anti-corrosion technology. It has the advantages of good anti-corrosion performance and long service life (the service life of anti-corrosion steel pipes produced by excellent manufacturers can reach years), and is widely used in natural gas transportation, oil transportation, heating, refrigeration and other projects.