In the manufacture of cylindrical equipment, the coiling machine is first used to roll the steel sheet into the required circular arc. Because there is a certain distance between the two lower rollers of the coiling machine, there is always a section of the Steel Plate at both ends of the steel plate to maintain a straight state. In the past, the two ends of the steel plate were manually hammered into a circular arc by a sledgehammer. Shape, then roll up the trigger. Labor intensity is high, especially for thicker and wider steel plates, and artificial hammers are more difficult.
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