The anti-corrosion pipes are processed with anti-corrosion materials, which generally offer excellent corrosion resistance. However, to further enhance their anti-corrosion properties, an additional anti-corrosion treatment is applied to the surface before shipment. This process significantly extends the lifespan of the pipes. What exactly is involved in this anti-corrosion treatment?

Cleaning: Utilizing solvents and emulsions to clean the surface of steel to remove oil, grease, dust, lubricants, and similar organic substances. However, it cannot remove rust, scale, flux, and other surface contaminants from the steel, thus it is only used as an auxiliary method in anti-corrosion production.

Pickling: Generally, pickling is done using either chemical or electrolytic methods. For pipeline anticorrosion, only chemical pickling is used, which can remove oxidation scale, rust, and old coatings. Sometimes, it can serve as a reprocessing step after sandblasting and rust removal. Chemical cleaning can make the surface clean and rough, but it has shallow anchor lines, which are prone to environmental contamination.

Shot Blasting Rust Removal: Shot blasting involves a high-speed rotation of the blasting (shot) blades driven by a high-power motor, which propel steel grit, steel shot, wire segments, ore, and other abrasives onto the surface of the filter pipe under the effect of centrifugal force. The filter pipe not only completely removes rust, oxides, and dirt but also achieves the desired uniform roughness on the anti-corrosion steel pipe due to the intense impact and friction of the abrasives.

D锈除处理: Primarily utilizes wire brushes and similar tools to abrade the surface of steel, effectively removing loose, raised oxides, rust, and slag. Manual rust removal can achieve a Sa2 level, while powered tools can reach a Sa3 level. If the steel surface is firmly attached with iron oxide scale, the rust removal may not be ideal, and it may not reach the anchor line depth required for anti-corrosion construction.