3PE anti-corrosion steel pipes are commonly used industrial steel pipes in industrial projects. What are the reasons and methods for choosing 3PE anti-corrosion steel pipes?
First, what are the common methods for anti-corrosion of 3PE anti-corrosion steel pipes?
1. Steel pipe anti-corrosion generally uses two main methods: external coating and cathodic protection.
2. Although most of the surface of the steel pipe is covered by the coating, even a small leak can lead to an incredible corrosion rate, even perforation or cracking. Therefore, in steel pipe anti-corrosion, the coating system and cathodic protection are generally used in combination to achieve a 99.99% coverage rate to avoid unimaginable consequences in the future.
3. The cathodic protection used for steel pipe anti-corrosion is divided into sacrificial cathodic protection and impressed current cathodic protection.
4. The purpose of using a coating for 3PE anti-corrosion steel pipes is to form a continuous insulating layer, directly insulating the metal from the electrolyte in direct contact, thus preventing proper electrolytic reactions.
5. Discontinuities in the coating application process are called leaks. These leaks primarily occur during coating, transportation, or installation, and may also be caused by coating aging, soil stress, or the movement of the steel pipe in the soil, without timely detection of third-party damage.
Second, what are the coating requirements for 3PE anti-corrosion steel pipes?
(1) A coating with good corrosion resistance should be relatively stable when exposed to various corrosive media such as acids, alkalis, salts, industrial wastewater, and chemical atmospheres. It should not be dissolved, swollen, or decomposed by the corrosive media, nor should it react chemically with the media to generate new harmful substances.
(2) A good anti-seepage coating should effectively prevent penetration and erosion of the steel pipe surface when in contact with highly permeable liquids or gases.
(3) Good adhesion and elasticity: The coating of 3PE anti-corrosion steel pipes should not peel off due to vibration or slight deformation of the steel pipe, requiring a certain level of mechanical strength.
Threeway Steel is known as a professional supplier engaged in manufacturing and distributing a wide range of steel pipe, and our headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
Threeway Steel is known as a professional supplier engaged in designing, manufacturing and distribution of a wide range of steel products with the headquarter located the central part of China – Hunan and six associated factories throughout China.
