MULTITECH

TUBES AND PIPES MADE OF METAL, AND A COMBINATION OF METAL AND NONMETALLIC COMPOSITE MATERIALS, NAMELY, TUBE-IN-TUBE, PIPE-IN-PIPE, MULTI-LAYERED TUBES AND PIPES, CORRUGATED TUBES AND PIPES, AND COMPOSITE TUBES AND PIPES

TUBES AND PIPES MADE OF PLASTIC, AND PLASTIC AND NON-METALLIC COMPOSITE MATERIALS, NAMELY, TUBE-IN-TUBE, PIPE-IN-PIPE, MULTI-LAYERED TUBES AND PIPES AND CORRUGATED TUBES AND PIPES; TUBES AND PIPES WITH INSULATING SLEEVES OF FOAMED MATERIALS; TUBES, PIPES AND HALF-SHELLS OF FOAMED MATERIAL FOR THE INSULATION OF TUBES AND PIPES; AND COMPOSITE TUBES AND PIPES