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Which is better for cold galvanizing and electric heating zinc boilers?

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Which is better for cold galvanizing and electric heating zinc boilers?

Published: 2018-05-30 Author: Click:

Which is better for cold galvanizing and electric heating zinc boilers?


Electro-heated zinc boiler is a kind of technology which immerses the rust-removed steel into the molten zinc at about 500 C to make the steel adhere to zinc layer and achieve the purpose of corrosion protection. It is mainly used in the metal structure and facilities of various industries. Cold galvanizing is a kind of technology which carries out the corrosion protection treatment on the surface of the workpiece by electrochemical principle. Cold galvanizing and hot-dip galvanizing as effective metal anticorrosive methods, which is good? The zinc pot manufacturer tells you:


Hot-dip galvanizing first pickles the steel tube, in order to remove iron oxide on the surface of the steel tube, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot-dip bath. Hot dip galvanizing has the advantages of uniform coating, strong adhesion and long service life.


Cold galvanizing is galvanizing, the amount of galvanizing is very small, only 10-50g/m2, its corrosion resistance than hot-dip galvanized pipe is much different.


Many formal galvanized pipe manufacturers, in order to ensure quality, mostly do not use cold galvanizing, and the galvanizing pot manufacturers know that although the price of cold galvanizing is cheaper than hot galvanizing, but only those small-scale, obsolete equipment of small enterprises using cold galvanizing. Hot galvanizing has good effect and long life.

Electric heating zinc boiler

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