Compressed-nitrogen-for-welding

Compressed Nitrogen

At normal atmospheric conditions, nitrogen is a gas unless the temperature is at or below -320 degrees Fahrenheit. Because that temperature is prohibitively expensive to maintain, not to mention harmful for other objects in the room, the best way to convert nitrogen into a liquid form is to compress it, applying such pressure to it that it condenses.
  
Uses for Compressed Nitrogen:
Curing Concrete,natural gas wells
 
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