The line includes in decoiler, guiding device, slitting device, cutting device, length measure device, extension device, recoile 1. ... 10T6. inner diameter of coil 450--600mm7. out diameter ≤1250mm8. slitting blade5 sets of blade9. motor cycloid redcking box10. guiding unit11 ... . length measurement unit13. cutting to length unit14. PLC control main machine