How to put up automatic 2 ply corrugated line? If you are keen to start your corrugated cardboard business, we are ready for your corrugated machine turn-key project. The single-faced corrugated cardboard line is including mill roll stand, preheater, single facer, auto splicer and integrated slitter cutter with auto stacker. As a professional manufacturer and supplier, we also offer tailor-made corrugated line solution to customers.