SYNTHETIC PLASTIC AS SEMI-FINISHED PRODUCTS IN THE FORM OF BLOCKS, PLATES, RODS, PROFILES, PIPES, TUBES, FOILS, FOILS OF FOAM, FIBERS OR BANDS; PIPE AND CONDUCTOR CONNECTION PIECES NOT MADE OF METAL, NAMELY, NON-METAL PIPE COUPLINGS AND JOINTS, IN PARTICULAR INCLUDING THOSE MADE OF SYNTHETIC FLUORINE-BASED RESINS AND TEXTILE MATERIAL; FABRIC-COMPENSATORS, ELASTOMER-COMPENSATORS AND SOFT MATERIAL COMPENSATORS, ALL IN THE NATURE OF FABRIC EXPANSION JOINTS, NON-METALLIC EXPANSION JOINTS, OR FLEX...