Nitrogen is used for the prevention of fire and explosion dangerous situations, purging, and testing of pipelines in the oil and gas industry. In the chemical and petrochemical industries, nitrogen is used for tanks inerting, and in the paint-and-varnish industry — for the prevention of oils polymerization.
Oxygen is used in gas-flame operations, such as metals welding, cutting, and brazing. In the metal industry, oxygen helps increase combustion temperature by the production of ferrous and non-ferrous metals.
Hydrogen finds application in oil refinery by hydraulic cleaning and cracking, in ammonia production, as well as by oil, coal and petroleum hydrogenation.
Carbon dioxide is used in the food industry for the production of carbonated drinks and dry ice which is used for food products preservation during storage.
Argon is used for the generation of inert environment by electric arc welding, in metals plasma welding and cutting, as well as in the production of stainless steel and other products.
