The galvanized elbow has a small amount of galvanizing, only ten-50g/m2, and its corrosion resistance is a lot worse than that of sizzling-dip galvanized pipe. Earning Income From Affiliate Network Regular galvanized elbow companies are permitted to use cold galvanized pipes for water and fuel pipes.
Cold galvanized elbow: The galvanized layer of the cold galvanized elbow is an electroplated layer, and the zinc layer and the elbow base are layered independently. The zinc layer is thin, and the zinc layer is simply attached to the steel pipe base and is easy to fall off. site Therefore, its corrosion resistance is bad. In new houses, it is forbidden to use cold galvanized elbows as the water supply pipe connection components.
Scorching-dip galvanized elbow: A hot-dip galvanized elbow is a blend of a molten metal and an iron matrix to produce an alloy layer, therefore combining the substrate and the plating. Hot-dip galvanizing is to very first pickle the elbow, in buy to get rid of the iron oxide on the surface of the elbow, soon after pickling, it is washed by ammonium chloride or zinc chloride aqueous answer or a mixed aqueous answer of ammonium chloride and zinc chloride, and then Feed into the scorching dip plating tank. Hot-dip galvanizing has the advantages of uniform plating, sturdy adhesion and extended support lifestyle.
The use of galvanized elbows: the use of galvanized elbows. The iron pipe connection for fuel and heating is now a galvanized elbow. The galvanized elbow is utilised as a water pipe connection. Soon after a few years of use, a massive amount of rust is created within the pipe. The yellow water that flows out not only pollutes the sanitary ware, but also is mixed with the bacteria that develop on the uneven inner wall. The rust leads to the hefty metal material in the water to be as well higher, which significantly endangers the well being of the human entire body.

In the 1960s and 1970s, developed countries in the globe began to build new sorts of pipes, and successively banned galvanized pipes and galvanized elbows. The Ministry of Construction and other four ministries also issued a document clarifying that galvanized elbows will be banned from 2000. At present, cold water pipes in newly constructed communities have rarely utilised galvanized elbows to connect pipe fittings. In some districts, sizzling water pipes use galvanized bends. Head connection.