Steel pipes are typically categorized into three main methods: by manufacturing process, shape, and application. Manufacturing process usually divides them into seamless and welded steel pipes. By shape, they can be further classified into round, square, and other special-shaped pipes, as well as double concave pipes and other special pipes. Corrosion-resistant steel pipes, as a type of special steel pipe, are processed through anti-corrosion techniques to effectively prevent or slow down corrosion caused by chemical or electrochemical reactions during transportation and use.

Corrosion is a major factor severely affecting materials. Metal corrosion is an economic issue. According to statistics from relevant enterprises, losses caused by metal corrosion account for approximately 5% of the total social and economic products each year, with pipeline corrosion occupying a considerable share. The direct economic loss from pipeline corrosion in China each year exceeds 280 billion yuan, while the global loss due to pipeline corrosion reaches an astonishing 5 trillion USD annually.

As a special type of steel pipe, anti-corrosion steel pipes are processed using anti-corrosion techniques, effectively preventing or slowing down corrosion due to chemical or electrochemical reactions during transportation and use. This extends the service life of the steel pipes and reduces their operational costs.

What is Corrosion-Resistant Steel Pipe?

Corrosion-resistant steel pipes are treated with anti-corrosion techniques, which can prevent or slow down chemical or electrochemical reactions during transportation and use. These anti-corrosion pipes are widely used in pipeline projects across various fields, including long-distance water transportation, oil, chemicals, natural gas, thermal power, wastewater treatment, water sources, bridges, steel structures, and ships.

The anti-corrosion coating used for anti-corrosion steel pipes is solvent-free epoxy coating, which, after curing, offers corrosion resistance, hardness, and density. The safe and reliable connection method for 3PE anti-corrosion polyethylene steel pipes is primarily hot-fusion or electric-fusion connection. This process ensures the consistency between the structure and the pipe body, achieving an integrated joint with the pipeline, effectively resisting stress. The 3PE anti-corrosion polyethylene steel pipe material does not add heavy metal stabilizers during processing, making it non-toxic and harmless, thus also an environmentally friendly steel pipe. To protect the environment and conserve energy, we can opt to use 3PE anti-corrosion steel pipes.

The 3PE coating structure consists of an outer layer of polyethylene, approximately 3mm thick; a bottom layer of FBE, ranging from 50 to 128mm; and a middle layer of copolymer adhesive, about 200mm in thickness. This structure combines the high bonding, antioxidant, chemical resistance, and cathodic disbondment resistance of FBE with the moisture resistance, electrical insulation, and mechanical system damage resistance of high-density polyethylene, creating a perfect integrated whole.

The 3PE anti-corrosion technique combines the excellent properties of epoxy coatings with extruded polyethylene coatings, merging the interface corrosion resistance and chemical corrosion resistance of epoxy coatings with the mechanical protective function of extruded polyolefin coatings. Its features include a high-strength, wear-resistant, corrosion-resistant, heat-resistant, and cold-resistant design, capable of being applied in media up to 150 degrees. Therefore, the 3PE anti-corrosion coating is an ideal choice for underground pipeline protection.

In addition, the anti-corrosion steel pipe also features the following:

The inner wall has a low friction coefficient, reducing energy consumption.

2. The interior walls meet national health standards.

3. The inner wall surface is smooth and resists scaling, featuring an automatic self-cleaning production function.

The characteristics of anti-corrosion steel pipes have been introduced quite thoroughly. In the long run, the widespread application of anti-corrosion steel pipes in our lives is primarily due to their high cost-performance ratio, coupled with their numerous excellent features, and their relatively moderate cost. We believe that with the continuous advancement of steel pipe production technology, more environmentally friendly and superior anti-corrosion steel pipes with enhanced overall performance will definitely emerge in the future.