PERTFLEXTRA

Non-electric cables and wires of common metal; pipe systems for central heating comprised of insulated aluminum pipes and pipe fittings of metal; junctions of metal for pipes; reinforcing materials of metal for pipes

Central heating boilers; heat pumps; heating systems for residential and commercial buildings comprised of boilers, valves, pipes, manifolds, control panel switches, and electrical wire, all sold as a unit; pipes for heating boilers

Plastics in extruded form for use in manufacture; packing, stopping and insulating materials, namely non-metallic gaskets and seals for sealing joints and valves in district heating systems, pipe joint compound and caulking materials for use in thermal energy distribution pipelines, sealing plugs made primarily from rubber for temporarily or permanently closing district heating pipes during maintenance, and thermal insulation for use in pre-insulated pipes for district heating systems to minimize heat loss; junctions, not of metal, for pipes; pipe muffs, not of metal; pipe gaskets; packing materials of rubber or plastics for pipes; joint packings for pipes; non-metal flexible tubes and hoses for use in central heating applications

Building materials, namely non-metallic rigid pipes for construction purposes; rigid pipes of polyethylene for the supply of drinking water and heating and air conditioning systems in houses, office buildings and industrial buildings; plastic piping systems for the distribution of thermal energy by a utility