Pipe unit comprises corrugated, flexible hose and rigid pipe which are held together by sleeve which fits over flange on end of pipe and into fold of corrugated hose

摘要

The pipe unit comprises a corrugated, flexible hose (22) and a rigid pipe (12). These are held together by a sleeve (30) which fits over a flange (24) on the end of the pipe and into a fold of the corrugated hose.