[ Tubes, piping, ducts, conduits, manually-operated mixing and outflow control valves made of base metal, all for use in ventilation, air-conditioning, warm-air heating and exhaust systems and structural parts and fittings therefor, none of these goods being equipment for treating steam or used with such equipment, and being equipment for controlling fluids or used with such equipment ]

Machines for use in the sheet metal industry, namely, metal working machines for manufacturing spiral tubes and ducts, shaping machines for metalworking in the nature of flanging and locking machines, cutting machines for metal working, Rolling mills for metalworking, rolling machines for rolling metals, hydraulic presses for metalworking, electrical welding machines for metalworking, mechanical presses for metalworking, shaping machines for metal working and structural parts and fittings therefor; mixing and control valves being of machines, and structural parts and fittings therefor; none of these goods being equipment for treating steam or used with such equipment and being equipment for controlling fluids or used with such equipment

[ Tubes, piping, ducts, conduits, mixing and outflow control valves, all as part of ventilation, air-conditioning, hot-air heating and evacuation installations, namely, ventilation, air-conditioning, warm-air heating, and exhaust systems composed primarily of tubes, piping, ducts, mixing and outflow control valves; component parts of ventilation, air-conditioning, hot-air heating and evacuation installations, namely, tubes, piping, ducts, conduits and mixing and outflow control valves all specifically designed for use as integrated parts of air-conditioning, air-cooling, Hot-air space heating and ventilation apparatus and instruments; none of these goods being equipment for treating steam or used with such equipment, and being equipment, and being equipment for controlling fluids or used with such equipment ]