... Stand, Pre-heater, Single facer, Overhead bridge conveyor, double decks heater for liner, Gluer, Double facer, Slitter scorer, Cutter, Down stacker, steam ... heater to be reheated, after this the paper is to double facer for being heated and jointed, herein a continuous corrugated ... provided. Steam heating system and oil heating system are optional . High speed cardboard production line machine