This invention is (magnetization device for scale and corrosion prevention of large pipes from 100mm-1000mm), magnetization device for structure to prevent scale and corrosion of central heating, large boiler of building and cooling tower, without replacing pipe It is attached to the existing pipe outside diameter, and it is continuously connected according to the size (outer diameter) of the pipe and connected to the first attached place to fix it with a fixed bend (13). In the case of a boiler, the suction side of the circulating water pump In the case of cooling tower, it is installed at the inlet side of the circulating water pump, and if it is circulated, it is a device to prevent scale and corrosion due to various minerals in all pipes while the circulating water is circulated. It is a magnetization device characterized in that.
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