METAL TUBES CONSTITUTING A COMPONENT PART OF HEAT EXCHANGERS;
Where the owner name is not linked, that owner no longer owns the brand
Technical Examples
A zinc galvanizing method for a single surface of a metal tube includes a first step of preparing metal tubes, a second step of galvanizing the metal tubes, a third step of acid washing, a fourth step of washing the metal tubes with water, and a final fifth step of drying the metal tubes. Then only an inner surface or an outer surface of meal tube is galvanized for resisting corrosion. The metal tubes according to the invention can save the subsequent expenditure required for maintenance and treating rust, and possible to prolong their service life, and the method can be applied to steel tubes of any shape or size.