Wannan shine mafi girman tsarin yankewa zuwa layin tsayi, galibi an tsara shi don coils na aluminum, yankan gani mai tashi ya zama dole don wannan layin.
Aluminum coils suna buƙatar babban injin daidaitawa, don yin alƙawarin daidaito. An tsara wannan musamman don coils na aluminum, saboda yana da taushi sosai.