[ Electrical ignition and flame monitoring devices, ] heat, time and temperature controllers; controlling devices for gas supply systems, in particular automatic switching apparatus for gas bottles and batteries; [ measuring and monitoring instruments for welding and cutting technology, namely, gas testing instruments, flow meters, gas pressure meters, level meters and indicators; gas deficiency alarm devices; machines and devices for materials testing, namely, magnetic object detectors for detecting cracks magnetically; leak detectors for gas supplies and gas pipe systems; level measuring instruments; programming places for writing control programs, consisting of computers, computer screens, printers; ] program-equipped, machine-readable data carriers, namely, [ prerecorded magnetic data carriers, optical data media, ] USB flash drives, [ compact discs, DVDs, hard disks, ] all featuring control software for gas instruments; none of the foregoing for use in subsea operations in the oil and gas industry; [ Machines for the autogenous or electrical working of pipes by welding and cutting techniques, electron beam machines, as well as the parts thereof for working materials; industrial robots, also for separating and joining materials; beam type deburring machines; parts of the aforesaid machines, namely, regulators, valves, safety valves, reducing valves, flowmeters, flow indicators, pressure gages, pressure indicators, gas filters, filters for flash backs, gas main and distribution pipes and tubes, gas bottles, welding, cutting, soldering heads, welding and cutting nozzles, gas injectors, cutting guides, line and tube connecting, adapting and coupling pieces, welding and cutting torches, blowpipes, welding, cutting and soldering tables, nozzle holders, compressed-air lances, as well as mechanically working installations and facilities consisting of the aforementioned apparatus and devices, also combined into movable or portable units; cryo systems, namely, cryogenic tanks, cryogenic storages; ] gas supply instruments, gas control panels, all for the reduction of the pressure of pressurized gases, instrument parts, namely, flame traps in the form of flame arresters of steel valves, of steel or water seals; machine couplings for gas bottles; [ power supply units for arc welding devices, in particular transformers and generators; ] additional fittings for gas supply installations and gas systems, namely, [ weld screwings, adapters, connection lines, brackets, ] safety controllers, safety valves, check valves, filters, manometers, contact manometers, signalling devices for the optical and acoustic display of limit value reports, gas quantity meters, check valves with built-in filters, double valves, all of the aforementioned products being machine parts for treatment of ultrapure gases or parts of such machine parts; Gas supply and gas control devices, namely, gas regulators, pressure regulators, cylinder pressure regulators, valves being plumbing fittings, and gas quantity control devices, namely, gas regulators, pressure regulators, cylinder pressure regulators; gas purification devices, namely, filters for gas conditioning, gas scrubbers; gas after-purification devices, namely, filters, gas purification apparatuses and scrubbers; gas mixing devices, namely, gas regulators for mixing gases
