Metal containers for compressed gas or compressed liquids; and their parts and fittings for use therewith, namely, closures and fasteners of metal for containers, clips of metal for tubes and pipes, collars of metal for fastening tubes and pipes, fittings of metal for compressed air hoses, fittings of metal for flexible and rigid pipes, metal caps, metal couplings, connectors and joints for use with tubes, pipes and compressed air hoses, flexible tubes of metal, metal pipes for liquid and gas...