GALVANIZED STEEL WATER PIPES-TESTING WATER FLOW ON OLD HOUSES

If you’re buying an old house, beware of old water pipes; specifically, galvanized steel.  These pipes build up with sediment on the inside, making the inside diameter of the pipe smaller and smaller over time, eventually to the point where water flow is unusable.  These pipes also corrode at the joints, which can lead to leaks.

The water supply piping is what brings water from the street to the house.  To identify the type of material, take a look at the water piping where it comes into the basement before the first shutoff valve, which should be located right before the water meter.  If this water piping has a threaded fitting, it’s probably a galvanized supply pipe.  This is always bad news.  The other types of water supply pipes are copper, plastic, and lead.  Copper and plastic are good news, lead is not.

If you see a thicker pipe coming up out of the basement floor with threads on the end, it’s probably a galvanized  supply pipe. The mere presence of galvanized pipes doesn’t constitute an immediate action item, but it does mean that the water distribution pipes in the house should be looked at and tested more thoroughly during the home inspection, especially if there is any evidence of past leaks.

We often say that the galvanized pipe, galvanized pipe use now gas, heating with the kind of iron pipe is galvanized pipe, galvanized pipe as the pipe, use a few years later, the tube produces a lot of rust, yellow water outflow ware not only pollution, but not mixed with smooth walls breeding of bacteria, heavy metals in the water caused by excessive corrosion, serious harm to human health.

Galvanized pipe is to make the molten metal and the body reaction, iron-based alloy layer, so that the substrate and coating combination of both. Hot dip galvanized steel pickling is the first, in order to remove the steel surface of iron oxide, pickling, the aqueous solution by ammonium chloride or zinc chloride or ammonium chloride and zinc chloride mixed solution tank cleaning, and then send into the hot-dip plating bath. Hot-dip galvanized with coating uniformity, adhesion, and long life. Hot dip galvanized steel substrate occurs with molten bath complex physical, chemical anti-galvanized steel pipe should form a corrosion-resistant structure of zinc-iron alloy layer close. Alloy layer and the layer of pure zinc, steel base blend. Therefore, its corrosion resistance ability.