Are both the inner and outer walls of galvanized pipes coated with zinc?
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Galvanized pipes are used in many parts of freshwater systems. I would like to ask: is zinc coated on both the inner and outer walls of galvanized pipes? Is it still just the outer wall that is galvanized?
It’s just the outer wall that is galvanized! They are divided into cold-galvanized pipes and hot-galvanized pipes, with hot-galvanized pipes being more widely used
To improve the corrosion resistance of steel pipes, they are galvanized. Galvanized steel pipes come in two types: hot-dip galvanized and electro-galvanized. Hot-dip galvanizing results in a thicker zinc coating, while electro-galvanizing is less costly but yields a surface that is not very smooth. But it seems pretty strange here~~ If it’s only the outer wall that needs to be galvanized, how is that done? If it’s coated on both the inside and outside, that’s simple – just submerge it in the electrolytic cell. But if it’s only coated on the outer surface, does one still need to seal both ends? :lol
Whether to coat the inside as well as the outside should be determined based on the usage conditions, I guess