After being removed from the pickling solution, steel pipes must be rinsed with water immediately to avoid the following issues:
(1) It prevents the pickling solution remaining on the surface of the steel pipes from continuing to erode the substrate.
(2) It prevents iron salts adhering to the surface of the steel pipes from being oxidized by oxygen in the air, transforming ferrous salts (divalent iron) into iron salts (trivalent iron) that are difficult to remove, i.e., transforming ferrous sulfate into ferric sulfate.
(3) It reduces the formation of zinc slag.
(4) It helps improve the quality of the galvanized layer on the surface of galvanized steel pipes, reducing or eliminating phenomena such as missing galvanization.
