When the Condenser Manufacturer manufactures the condenser, the tube sheet and the tube are welded by manual arc welding. The weld shape has different degrees of defects, such as depressions, pores, slag inclusions, etc., and the weld stress distribution is not uniform. When in use, the tube sheet is partly in contact with industrial cooling water, and impurities, salts, gases, and microorganisms in the industrial cooling water will cause corrosion to the tube sheet and welds. Studies have shown that industrial water, whether it is freshwater or seawater, will have various ions and dissolved oxygen, among which the concentration of chloride ions and oxygen changes, which play an important role in the corrosive shape of metals. In addition, the complexity of the metal structure will also affect the corrosion morphology.

Therefore, pitting corrosion and crevice corrosion is the main corrosion of welds between tube sheet and tube. From the outside, there will be many corrosion products and sediments on the surface of the tube sheet, and bubbles of different sizes are distributed. When seawater is used as the medium, galvanic corrosion will also occur. Bimetal corrosion is also a common phenomenon of tube sheet corrosion.

In response to the problem of condenser corrosion protection, Western countries have both Custom Condenser Coils, and most of them use polymer composite materials for protection. Among them, technical products are the most widely used. It has excellent adhesion performance, temperature resistance, and chemical corrosion resistance. It can be used safely in a closed environment without shrinking. In particular, it has good isolation of bimetallic corrosion and erosion resistance, which fundamentally eliminates the corrosion of repair parts. Leakage provides a long-term protective coating for the condenser.