[Class : 6] Pipes Made Of Metal; Tubes Made Of Metal; Valves Made Of Metal

[Class : 19] Non Metallic Water Pipes; Non Metallic Rigid Pipes For Building; Earthenware Pipes; Pipes Of Cement; Ceramic Drain Pipes

[Class : 17] Water Pipes (Not Of Metal); Water Pipe Valve; Rigid Pipes (Not Of Metal); Drain Pipes (Not Of Metal); Gutter Pipe (Not Of Metal); Penstock Pipes (Not Of Metal); Flexible Pipes (Not Of Metal); Tubes (Not Of Metal); Hoses (Not Of Metal)