Hot -dip galvanizing is a zinc liquid that is cleaned and activated on the surface. The reactions and diffusion between iron zinc are placed on the surface of the steel products through the reaction and diffusion between iron zinc. It has the following points.
1. Low the cost of hot -dip galvanized pipes: The cost of hot -dip galvanizing rust is lower than the cost of other paint coatings.
2. Durable durability of galvanized pipes: In the suburban environment, the standard hot -dip galvanized rust -proof thickness can be maintained for 50 years;
3. Good reliability of galvanized pipes: The combination of galvanized layers and steel is a combination of metallurgy, making zinc a part of the steel surface, so the grids are better durable.
4. Strong toughness of the coatings of galvanized pipes: Galvanized layers form a special metallurgical structure, which can be damaged by mechanical damage during transportation and use.
5. Comprehensive protection: Each part of the plating can be plated with zinc, and it can be fully protected even in the depression, the sharp corner and the hidden place.
6, time -saving and effort: The galvanized process is faster than other coating construction methods, and it can avoid the time required to paint on the construction site after installation.
7. Low cost in the early stage: Under normal circumstances, the cost of hot zinc is lower than that of other protective coatings. The reason is simple. Other protective coatings such as sand painting are labor -dense processes. Mechanized, closely controlled in -plant construction.
8. Simple and convenient inspection: Thermal -dipped zinc layer can be tested with visual and simple non -broken coating thickness tables.
9. Reliability: The specifications of thermal zinc is generally implemented in accordance with the BS EN ISO 1461, which limits its lowest zinc layer thickness, so its rust -proof period and performance are reliable and predictable.
The hot -dip galvanized metal reacts with the iron -based reaction to generate the alloy layer, which combines the substrate and the coating. The hot -dip galvanized is to pick up the steel parts first. In order to remove the iron oxide oxide on the surface of the steel parts, after pickling, cleaning through ammonium chloride or chloride water -chloride or ammonium chloride and zinc chloride hybrid water grooves are cleaned for cleaning , And then send it to the hot immersion groove. Thermally galvanized has the advantages of uniform coating, strong adhesion, and long service life.
