Gas In Your Business for Manufacturing and Construction Industry

Nitrogen (N2)
Shrink fitting is an interesting alternative to traditional expansion fitting.  Instead of heating the outer metal part, the inner part is cooled by liquid nitrogen so that the metal shrinks and can be inserted.  When the metal returns to its normal temperature, it expands to its original size, giving a very tight fit.
Liquid nitrogen is used to cool concrete, which leads to better cured properties.
When construction operations must be done in soft, water-soaked ground such as tunnel construction underneath waterways, the ground can be frozen effectively with liquid nitrogen. Pipes are driven into the ground, liquid nitrogen is pumped through the pipes under the earth’s surface. When the nitrogen exits into the soil, it vaporizes, removing heat from the soil and freezing it.

Argon (Ar)
Argon is used as a filler gas in fluorescent and incandescent light bulbs, to exclude oxygen or other reactive gases and to reduce the evaporation rate of the tungsten filament.
It is used as a filler gas between the glass panels of high-efficiency thermopane windows, as it is not only dry and colorless.

Carbon dioxide (CO2)
Dry ice pellets are used to replace sandblasting when removing paint from surfaces.  It aids in reducing the cost of disposal and cleanup.

Krypton
Argon and Krypton are used as a premium filler gases for high-efficiency dual-pane windows.  Argon is about one-third heavier than nitrogen or dry air, and Krypton is twice as heavy as Argon.  They may be used individually or in a mixture. 
These heavier filler gases minimize heat transmission by convective movement of the filler gas between the panes of glass.  Noise transmission through windows is reduced as the molecular weight of the filler gas increases.  However, Argon is about 5 times as expensive as dry nitrogen.