Galvanized square pipe has a good performance, and the demand for galvanized square pipe is very large. How to straighten the galvanized square pipe? Next, let's explain it in detail.
The zigzag of galvanized square pipe is caused by improper adjustment of rolling mill, residual stress during rolling and uneven cooling along the pipe section and length. Therefore, it is impossible to directly obtain very straight tubes from the rolling mill. Only by cold straightening the tortuosity of the tubes can the rules of technical conditions be satisfied.
The fundamental principle of straightening is to make the galvanized square pipe undergo elastic-plastic tortuosity, from large tortuosity to small tortuosity, so it is necessary for the steel pipe to undergo repeated tortuosity in the straightening machine. The degree of repeated twists and turns of the steel pipe is mainly determined by the adjustment of the straightening machine.
There are many factors that affect the straightening quality, such as the tortuosity of the original pipe, the scale of the steel pipe, the straightening model of the material, and the adjustment parameters.
Many galvanized square pipe suppliers will provide chemical compatibility tables. However, the engineers should note that the chemical compatibility table specially prepared for galvanized square pipes should be used instead of the chemical compatibility table prepared for ordinary pipes.
Therefore, only the galvanized square pipe should be referred to, rather than the chemical compatibility level of ordinary pipes and related substances. Otherwise, the galvanized square pipe will fail or be damaged and leak, resulting in damage or risk accident of the pump.
Post time: Aug-10-2022
