First, observe whether the solder joints are uniform and smooth. If there are some metal crucibles on the
aluminium stage, it is probably because the welding is in order to grasp the proper temperature. If the temperature is too high, the liquefaction reaction will occur at one end, so deformation will occur.
Second, pay attention to the position of the welded joint. Every
outdoor concert stage sale can be said to have undergone tempering before molding. The welds left by each weld are distributed in other places, such as the middle of the bottom weld. In order to achieve uniform force, the truss is easily deformed.
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