Barrel segments are from rectangular shaped, Barrel is made from alloy steel body and sleeved with HCHCr hardened with fully vacuum hardned and precisely honed to fine inner surface. The character 8 shaped barrel bore provide helical material transport and continuous material transfer so we can g et higher output from our intermeshing Co-Rotating twin screw extruder. Water circulation system is provided with every modular of barrel. Each barrel sector has housing for the probe for the working temperature control and measurement.