why are cylinder of oxygen used a) in hospital (b) by welders
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why are cylinder of oxygen used a) in hospital (b) by welders
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hospitals:
The FDA requires medical oxygen cylinders to be evacuated before filling in order to reduce the risk of contamination vs. industrial or welding oxygen that does not need to be evacuated before re-filling
welders:
Pure oxygen, instead of air, is used to increase the flame temperature to allow localized melting of the work piece material (e.g. steel) in a room environment. ... Welding metal results when two pieces are heated to a temperature that produces a shared pool of molten metal.
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