[Class : 19] Plastic Pipes For Plumbing Purposes; Non Metallic Drainage Pipes; Water Pipe Valves, Not Of Metal Or Plastic; Valves, Not Of Metal Or Plastic, For Water Pipes; Polyethylene Pipes Used In Geothermal Heating And Cooling Systems; Non Metallic Tiles For Building ; Non Metallic Roof Tiles ; Non Metallic Floor Tiles ; Non Metallic Wall Tiles ; Cement ; Rigid Pipes Of Plastics [Other Than Parts Of Sanitary Installations]; Transportable Buildings, Not Of Metal ; Materials, Not Of Metal, For Building And Construction; Asphalt, Pitch, Tar And Bitumen; Ducts Made Of Plastics For Trunking Pipes For Gases; Plastics Pipes [Rigid] For Water; Plastic Pipes For Conveying Natural Gas ; Rigid Pipes, Not Of Metal, For Building ; Rigid Underdrainage Pipes, Not Of Metal ; Drain Traps [Valves], Not Of Metal Or Plastic