Adaptors for pipes (metal); attachment collars of metal for pipes; attachment parts of metal for gas pipes; bend pipes of metal; branching pipes of metal; cast iron parts for pipes (other than parts of machines or sanitary installations); connection pipes of metal (parts of machines); connectors of metal for pipes; couplings (joints) made of metal for pipes; couplings of metal for pipes; drill pipes of metal; ducts of metal for concealing water pipes; elbows of metal for pipes; fastening collars of metal for pipes and tubes; fastening pipes (collars of metal for -); fittings of metal for pipes; junctions for pipes of metal; junctions of metal for pipes; metal branching pipes (other than parts of machines, engines or sanitary installations); metal pieces for pipes (other than parts of machines, engines or sanitary installations); metal valves for water pipes; metal water fittings incorporating flow control (parts for water pipes); pressure pipes of metal, other than parts of machines; racking (structures) of metal for supporting pipes; rigid tubes of metal; seals of metal for pipes; seamless metallic pipes (other than parts of sanitary installations); sewer pipes of metal; sprinkling pipes of metal; steel pipes; tubes of metal; water pipes of metal; water pipes of metal; water-pipes of metal