... pressureValveApplicationOxygenO299.9%150 bar/200 barQF-2Steel cutting, welding, flame processing99.999%150 bar/200 barNitrogenN299.9% ... %150 bar/200 barArgonAr99.9%150 bar/200 barFemaleWelding arc welding, stainless steel smelting, container, steel structure manufacture, ... bar/200 barHydrogenH299.9%150 barQF-30Chemical industry, welding, artificial gems99.995%150 bar99.999%150 barCO2CO299 ...