JACKETING OF STEEL PIPES

摘要

Steel pipes pass through an extruder with a low-pressure antechamber for obtaining suction of an extruded jacket against the pipe. The entrance to that antechamber is sealed by a combination of rubber elastic and spring steel disks, the latter having tongues that are deflected by the pipe entering the chamber, the tongues of one disk sealingly covering the slots of an adjacent disk.