Housing for plastic, metal powder, Keramikpulver- or food processing machines

A housing (2) for plastic, metal powder, Keramikpulver- and food processing machines, in particular for double and multi-screw extruder, with a plurality of interconnected Bimetallrohrkorpern (1) having an inner (6) and an outer (5) layer is characterized in that the bimetallic tubular body (2) are difussionsverbunden.