Application of galvanized welded pipe
Most of the old house is Hot Dipped Galvanized Welded Steel Pipe, the kind of iron pipe used for gas and heating is also galvanized welded steel pipe, the galvanized welded steel pipe is used as pipe. After a few years, a large amount of rust is produced in the pipe. The effluent from the yellow water not only pollutes the sanitary ware, but also is mixed with the bacteria which are not smooth inside the inner wall. The heavy metal content in the water is too high and is seriously dangerous. Harm the health of the human body. In 60s and 70s, the developed countries began to develop new types of pipes and banned galvanized welded steel pipe one after another. The four ministries and commissions, such as the Ministry of construction of China, also make sure that the galvanized welded steel pipe have been banned from the two 000 years. After 2000, the cold water pipes in the newly built communities have rarely used galvanized welded steel pipe, and some hot water pipes in some communities use galvanized welded steel pipe.
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