6
Pipes, Control and cleaning pipes, control spigots, fork pieces and T-pieces, Clamping rings, Adapters, Connector supports, Cones, valves for air regulation, pipe throttle and shut-off valves with and without gaskets, bag spouts, pipe slide valves, ball joints for connecting pipes, pipe, cover and metering valve boxes, two-way distributors, outlet slides, rotary pipe distributors, dust-tight rotary pipe distributors, rotary pipe switches; All the aforesaid goods wholly or mainly of metal
17
Flange gaskets, ring gaskets, border sealing rings, seals, valve gaskets, covers, collars, round cords, profile cords, outlet seals; All the aforesaid goods wholly or predominately of plastic or rubber, not included in other classes
37
Construction; Repair and installation of pipes, control pipes and cleaning pipes, control spigots, fork pieces and T-pieces, clamping rings, adapters, connection branches, cones, valves for air regulation, pipe throttle and shut-off valves with and without gaskets, bag spouts, pipe slide valves, ball joints for connecting pipes, pipe, cover and metering valve boxes, two-way distributors, outlet slides, rotary pipe distributors, dust-tight rotary pipe distributors, rotary pipe switches, flange gaskets, annular gaskets, border sealing rings, seals, valve gaskets, covers, collars, round cords, profile cords, outlet seals