A particularly advantageous aspect of the bi-hole barrel for co-rotating extruders is the ability to incorporate an internal sleeve made of hardened steel. This feature not only increases the barrel’s resistance to corrosion but also helps to combat abrasive wear, significantly prolonging the life of the barrel itself.

Besides durability, another important advantage of this design is practicality in terms of maintenance. In case of wear, the internal sleeve can be easily replaced without the need to change the entire outer body of the barrel. This targeted replacement option represents a considerable saving on maintenance costs and makes the use of the bi-hole barrel for co-rotating extruders an efficient and economical option in the long term.