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Precision small levelling machines generally refers to the levelling machines that processes cold rolled coils with a maximum width of less than 800mm, and the processing thickness is 0.3~3.0mm. The same as the sheet large boot, it is mainly processed high requirements of cold rolled coil, especially the surface protection requirements, generally higher, its products are generally set open sheet, widely used in stamping, precision cutting and other aspects.

The sheet levelling machines can generally process cold rolled coils with a thickness of 0.3mm ~ 3.0mm. Early sheet levelling machines generally can only process cold-rolled coils with a maximum width of 1300mm, but with the wide application of 1500mm cold-rolled coils, 1500mm width opener soon occupied the market. The processing capacity of cold rolling levelling machines is mainly reflected in levelling, surface protection, stamping material and so on.

Middle plate levelling machines is specialized in processing hot rolled coil equipment, the general processing capacity of 3mm to 14mm thickness. The early middle plate levelling machines can only open hot rolled coils with a maximum width of 1500mm, with the introduction of wide hot rolled coils, in recent years, the hot rolled levelling machines on the processing center can generally open 2000mm wide hot rolled coils. Part of the hot rolling machine also has edge cutting function.