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FITTINGS FOR INDUSTRIAL FURNACES AND PROTECTIVE- GAS GENERATOR INSTALLATIONS, ESPECIALLY TUBES AND VALVES; PROTECTIVE-GAS GENERATORS, WASHING AND DEGREASING MACHINES FOR METAL TREATMENT APPLICATIONS; LADLE METALLURGY AND POWDER METALLURGY INSTALLATIONS AND PARTS THEREOF (ALL BEFORE-MENTIONED PARTS
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MEASURING, RECORDING, REGULATING, PROCESS CONTROL AND MONITORING EQUIPMENT, ESPECIALLY FOR TEMPERATURES, PROTECTIVE-GAS PROPERTIES AND DEW POINT DETERMINATION; ELECTRICALLY, GAS AND OIL-HEATED INDUSTRIAL FURNACES AND PARTS THEREOF; HARDENING, TEMPERING, ANNEALING, HEAT-TREATMENT, BRIGHT ANNEALING, COOLING AND QUENCHING SYSTEMS FOR THE TREATMENT OF METAL WORKPIECES, AND PARTS OF SUCH SYSTEMS, ESPECIALLY CONVEYORS; OIL AND GAS BURNERS; REMELTING SYSTEMS FOR STEEL AND SUPERALLOYS, AND PARTS OF SUCH SYSTEMS; VACUUM SYSTEMS FOR MELTING AND CASTING OPERATIONS, AND PARTS THEREOF; VACUUM HEAT-TREATING SYSTEMS FOR HARDENING, ANNEALING, HIGH-TEMPERATURE SOLDERING OF METALS, WITH OR WITHOUT HIGH- PRESSURE GAS QUENCHING, AND PARTS OF SUCH SYSTEMS; HIGH-PRESSURE NITRIDING EQUIPMENT FOR STEEL AND TITANIUM AND FOR PULSE AND PLASMA CARBURIZATION OF CASEHARDENING STEEL, AS WELL AS PARTS OF SUCH SYSTEMS; VACUUM SYSTEMS FOR SINTERING AND OVERPRESSURE SINTERING OF HARD METALS AND INDUSTRIAL CERAMIC MATERIALS, AS WELL AS PARTS OF SUCH SYSTEMS; VACUUM-THERMAL RECYCLING SYSTEMS AND PARTS THEREOF (ALL ABOVE- MENTIONED PARTS; DRYING MACHINES FOR METAL TREATMENT APPLICATIONS