[Class : 17] Flexible Plastic Pipe Insulation, Pipe Connections (Nonmetallic); Pipe Couplings (Non Metallic), Pipe Linings (Nonmetallic), Pipe Spacers (Non Metallic), Pipe Unions (Nonmetallic), Flexible Pipes ; Flexible Pipes, Tubes, Hoses, And Fittings Therefor, Including Valves, Non Metallic ; Non Metallic Pipe Extensions ; Non Metallic Flexible Pipes ; Non Metallic Flexible Tubes ; Non Metallic Flexible Hose Pipes ; Fittings [Non Metallic] For Flexible Pipes ; Non Metallic Fittings For Flexible Pipes Non Metallic Pipe Sleeves; Flexible Hose Pipes Of Plastic, Flexible Plumbing Pipes Of Plastic; Pipe Fittings Comprised Primarily Of Plastic; Thermally Insulated Pipes Made Of Plastic; Hose Pipes Made Of Plastic; Identification Sleeves Of Plastics For Pipes; Pipes Made Of Plastic For Motor Vehicles; Flexible Plastic Pipes For Conveying Natural Gas; Fittings [Non Metallic] For Flexible Pipes; Fittings (Not Of Metal) For Pipes, Non Metal Fittings For Flexible Pipes, Non Metal Fittings For Rigid Pipes, Compressed Air Pipe Fittings (Not Of Metal), Sealing Rings For Pipe Fittings (Non Metallic); Pipe Fittings [Junctions] (Non Metallic) Parts Of Rigid Water Pipes; Flexible Tubes For Use In Irrigation, Flexible Pipes, Tubes And Hoses (Not Of Metal) Including Valves For The Conducting Of Gaseous Media, Flexible Tubes (Non Metallic) For The Conducting Of Liquid Media