METHOD OF MANUFACTURING A FLEXIBLE TUBULAR MEMBER BY COILING A SHAPED METALLIC STRIP ABOUT A TUBE OF SNYTHETIC PLASTIC MATERIAL

摘要

Method of manufacturing a flexible tubular member by coiling a shaped metallic strip about a tube of synthetic plastic material in which the tube of synthetic material is flattened and curved into an arcuate cross-section before entering the forming head which forms the metallic strip into a tube. The invention includes apparatus for carrying out this process.