... 750*6000,Ra0.01,0.001mm for hot fabric,plastic film/sheet/plate,aluminum foil,cigarette paper. Bridle cylinders , ... hardening. Hardness is HRC62 after polishing Inner structure: single-layer, multi-layer screw, Z and other structure.Processing: Chroming, Ceramic, ... straightness≤0.001mm, run out≤0.001mm.Application: used in plastic films/sheets/plates, textiles, paper, leather, leather, metal, ...