[Class : 6] Common Metals And Their Alloys; Metal Building Materials; Branching Pipes Of Metal ; Clips Of Metal For Cables And Pipes; Collars Of Metal For Fastening Pipes; Drain Pipes Of Metal; Ducts Of Metal, For Central Heating Installations / Ducts And Pipes Of Metal For Central Heating Installations / Pipes Of Metal, For Central Heating Installations ;Elbows Of Metal For Pipes; Gutter Pipes Of Metal; Junctions Of Metal For Pipes; Manifolds Of Metal For Pipelines; Penstock Pipes Of Metal; Pipe Muffs Of Metal; Pipework Of Metal; Reinforcing Materials Of Metal For Pipes; Steel Tubes / Steel Pipes; Tubes Of Metal / Pipes Of Metal ; Water Pipe Valves Of Metal ;Water Pipes Of Metal; Drain Traps [Valves] Of Metal; Valves Of Metal, Other Than Parts Of Machines; Water Pipe Valves Of Metal; Goods Of Common Metal Not Included In Other Classes