Pipes; steel pipes; pipes and tubes of metal; couplings of metal for tubing; couplings of metal for tubing; pipework of metal; tubes of copper alloys; metal pipe clips; pipe jackets of metal; pipe muffs of metal; pipe nuts of metal; metal pipe clips; pipework of metal; fittings of metal for pipes; pipe collars of metal; pipe support sleeves of metal; pipe extensions of metal; pipe spacers of metal; junctions of metal for pipes; pipes and tubes of metal; tubes of stainless steel; reinforcing materials and connectors of metal for pipes; pipework of metal for non-electrical purposes; rotating junctions of metal for pipes; ducting conduit installations (non-electric) of metal; junctions of metal for pipes; pipe unions of metal; couplings of metal for tubing; metal tubes for gas; junctions of metal for pipes; ducts made of metal for trunking pipes for gases; ducts made of metal for trunking pipes for liquids; ducts made of metal for trunking conduits for liquids; ducts of metal for housing ventilation pipes; pipes of metal including those from alloy steel and titanium; pipes of metal including those from alloy steel and titanium; junctions of metal for pipes including those from alloy steel and titanium; pipes, tubes and hoses, and fittings therefor, including valves; tubes of nickel alloys

Pipes [fitted parts of machines]; pipe laying machines; adaptors for pipes [parts of machines]; clamp connectors for piping [parts of machines]; cast iron parts for pipes (parts of machines); joints of metal for pipes (parts for machines); joints for pipes (metal -) [parts of machines]; joints for tubes (metal -) [parts of engines]