Galvanized pipe generally refers to galvanized steel pipe, which is an important building material, to the use of galvanized pipe before the need to consider its advantages and disadvantages. Today we will talk about the advantages and disadvantages of galvanized pipe.
What are the advantages of galvanized pipe?
1, low processing cost: the cost of hot dip galvanized rust is lower than the cost of other paint coatings.
2, durable: hot dip galvanized steel pipe with surface gloss, uniform zinc layer, no leakage plating, no dripping, adhesion strong break net corps, strong corrosion resistance characteristics, in the suburban environment rose significantly, the standard hot-dip galvanized rust thickness can be maintained for more than 50 years without repair; In urban and offshore areas, standard hot-dip galvanized rust protection can be maintained for 20 years without repair.
3, good reliability: galvanized layer and steel is a metallurgical combination of good news, become a part of the steel surface galvanized steel pipe, so the durability of the coating is more reliable.
4, the toughness of the coating is strong: the galvanized layer forms a special metallurgical structure, which can withstand mechanical damage during transportation and use.
5, comprehensive protection: every part of the plated parts can be plated with zinc, even in the depression, sharp corners and hidden places can be fully protected.
6, save time and effort: the galvanizing process is faster than other coating construction methods and can avoid the time required to brush on the site after installation.
Performance characteristics of galvanized steel pipe
1. The zinc coating is thick, with detailed, uniform, and non-porous crystals, and excellent corrosion resistance;
2. The zinc layer obtained by electroplating is relatively pure, and it corrodes slowly in the midst of acid, alkali, etc., and can effectively maintain the steel substrate;
3. Because the zinc coating has excellent ductility, it can be formed by cold punching, rolling, bending, etc. without damaging the coating.
4. The zinc coating is passivated by chromic acid to form white, colorful, military green, etc., beautiful and generous, with certain decorative properties;
5. With a thick and dense pure zinc layer covering the surface of the steel, it can prevent the steel substrate from touching any corrosive solution and protect the steel substrate from corrosion. In the general atmosphere, the surface of the zinc layer constitutes a very thin and dense zinc oxide layer surface, which is difficult to dissolve in water, so it has a certain maintenance effect on the steel substrate. If zinc oxide and other components in the atmosphere form insoluble zinc salts, the anti-corrosion effect is more promising.
6. With iron-zinc alloy layer, combined with compactness, it exhibits unique corrosion resistance in marine salt spray atmosphere and industrial atmosphere;
7. Because of the strong combination, zinc, and iron are mutually soluble and have strong wear resistance;
8. After the steel structural parts are hot-dip galvanized, it is equivalent to one annealing treatment, which can effectively improve the mechanical function of the steel matrix, eliminate the stress during the forming and welding of the steel parts, and is beneficial to the turning of the steel structural parts.
9. Because zinc has excellent ductility and its alloy layer is firmly attached to the steel base, hot-dipped parts can be formed by cold punching, rolling, wire drawing, and bending without damaging the coating;
10. The surface of the parts after hot-dip galvanizing is bright and beautiful.
11. The pure zinc layer is a layer of galvanized layer endowed with plasticity in hot-dip galvanizing. Its properties are basically close to pure zinc and have ductility, so it is rich in flexibility.