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修改這篇文章 : Double Layer Roll Forming Machine

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To satisfy the demand for roll forming two profiles in a limited plant area with quick profile changeover, the dual level mills have been developed. The double-high mills have alternating short and tall stands. Rolls for one profile are installed in the short stands, and rolls for another profile are mounted on the tall stands. The lines have one uncoiler and one cutoff press. If the material is fed into the lower-level rolls, then one profile is formed. If the coil is fed into the upper level rolls, then another profile is formed. To accommodate the profiles exiting at two different levels, the cutoff die also has two levels. The handling equipment for finished products beyond the cutoff die must be adjustable up and down to suit the two product exit heights.

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