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Natural gas
Natural gas is a naturally occurring hydrocarbon gas mixture consisting primarily of methane, with up to 20 % of other hydrocarbons as well as impurities in varying amounts such as carbon dioxide. Natural gas is widely used as an important energy source in many applications including heating buildings, generating electricity, providing heat and power to industry, as fuel for vehicles and as a chemical feedstock in the manufacture of products such as plastics and other commercially important organic chemicals.
Industry: Energy
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Natural gas
heat analysis
Energy; Natural gas
A chemical analysis conducted by a foundry immediately prior to pouring which measures the exact chemical composition of a particular batch of molten metal.
heat treatment
Energy; Natural gas
Describes any process or procedure by which the internal structure of steel is altered by heating to produce desired physical and mechanical characteristics.
high-performance butterfly valve
Energy; Natural gas
A butterfly valve in which the disc seating surface is off-set form its axis of rotation, producing an uninterrupted seating surface and "camming" action when seating and unseating.
hot tap
Energy; Natural gas
A connection made to a pipeline while the line is under pressure or in service. A special procedure is required to make an opening in the pipe without leaking any of the line contents.
hot tears
Energy; Natural gas
A defect occurring in castings caused where partially solidified or weak, newly solidified sections are subjected to a pull resulting from the contraction of thinner parts that have solidified ...
huddling chamber
Energy; Natural gas
A space adjacement to the seating surface of a safety valve or a safety relief valve that captures high-pressure fluid at disc unseating, producing higher unseating force and instantaneous full valve ...
huey test
Energy; Natural gas
A corrosion resistance test for stainless steel, most useful for predicting resistance to intergranular corrosion.
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