Below is a list of Cardboard Tubes manufacturers from 21sconsin-rapids, Wisconsin. Cardboard tubes, or paper tubes, are cylindrical products fabricated from wood pulp which has been made into different varieties of cardboard such as fiberboard, paperboard, kraft paper and paper-adhesive composites. Cardboard tubes are used for a wide variety of functions in different industries and are typically fabricated from ribbons of cardboard wrapped around a mandrel in the desired dimensions.