... and common lines for single wall,double wall and triple wall corrugated board production with speed ranging from 100m/min ... .3.It mainly includes mill roll stand,single facer,conveyor bridge,glue machine,doublefacer,preheaters,preconditions,slitter scorer,cut-off ... for 5Ply/7Ply corrugated carton paperboard production: Automatic High-speed 5Ply/7Ply Corrugated Carton Sheet Production Line Machine