Common Anticorrosion Method of Seamless Steel Tube

The anti-corrosion method for a seamless steel pipe is generally to use coating anticorrosion. Let's learn about the anticorrosion of seamless steel pipe coating.

The anticorrosion of seamless steel tube coating is one of the basic methods of anticorrosion of seamless steel tube. More and more composite materials or composite structures are used in steel pipe anti-corrosion coating. These materials and structures should have good dielectric properties, physical properties, stable chemical properties, and a wide range of temperature adaptation.

The anticorrosive coating on the outer wall of seamless steel tube: types of coating materials and service conditions for the outer wall of the pipe.

The anticorrosive coating on the inner wall of seamless steel tube: a thin film applied to the inner wall of the tube to prevent corrosion, reduce frictional resistance, and increase throughput. Common coatings include amine cured epoxy resin and polyamide epoxy resin with a coating thickness of 0.038 ~ 0.2 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 1970s, it tends to use the same material for the coating of the inner tube and outer wall, so that the coating of the inner tube and outer wall can be carried out at the same time.

Seamless steel pipe anti-corrosion and heat preservation coating: in the medium and small diameter heat transfer crude oil or fuel oil pipeline, in order to reduce the heat dissipation from the pipeline to the soil, the pipe outside the heat preservation and corrosion composite layer. The common insulation material is rigid polyurethane foam plastic, the applicable temperature is -185 ~ 95℃.To increase the strength of the soft material, a layer of high-density polyethylene is placed over the insulation to form a composite structure to prevent groundwater from seeping into the insulation.

Other cases: if the seamless steel tube outer tube is polyethylene tube, no need to do corrosion protection. Polyethylene odorless, non-toxic, feel like wax, has good low-temperature resistance (the lowest temperature can reach 70 ~ 100 ℃), chemical stability is good, most of acid and alkali erosion (acid) with characteristics of oxidation resistance, the temperature does not dissolve in solvents, water imbibition is small, but because of its slow for a linear molecule can be soluble in some organic solvents, and do not happen swelling, good electrical insulation performance.

What introduces above for everybody is the common anticorrosion way of a seamless steel tube, hope can be helpful to everybody. We are an oil black seamless steel pipe supplier. If you have any demand for our products, please feel free to contact us.

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