Praxair Depot

If you’re stopping by for steel, aluminum, or other materials; we are also an authorized depot of Praxair gas. We keep a variety of essential gasses in stock for ours and your team’s needs.

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About welding gasses

Inert Gases:

Shielding gases, sometimes referred to as MIG (Metal Inert Gas) and TIG (Tungsten Inert Gas), are inert or semi-inert gases that are frequently employed in a variety of welding techniques, most notably gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW).
They serve as a barrier between the weld area and air and water vapor.
These air gases can affect the quality of the weld or make it more challenging, depending on the materials being welded.
The weld is shielded from the atmosphere using other techniques in other arc welding procedures as well. In shielded metal arc welding, for instance, an electrode is covered in flux that when consumed creates carbon dioxide, a semi-inert gas that is suitable for welding steel.

Dark welding shot uplcose
Praxair welding supply tanks lined up, small medium and large

Reactive Gases:

The most often used fuel gas for gas welding and gas cutting is acetylene.
Because acetylene is so widely used, the terms “oxyacetylene welding” and “oxyacetylene cutting” are frequently used in place of “gas welding” and “gas cutting.”

Acetylene burns at a temperature between 3200 °C and 3500 °C (5800 °F and 6300 °F) when mixed with oxygen.

Comparing acetylene to other fuels, its high cost is its biggest drawback.
Additionally, acetylene is unstable at pressures greater than 33 feet (10 meters) underwater, making it unsuitable for underwater welding or cutting.
The recommended gas for underwater welding and cutting is hydrogen.

Acetylene is kept in special cylinders since it is unstable over 2.07 bar (30 PSI) pressure and may explode.

 

Oxy-propane is commonly used for cutting metals because it does not generate high temperatures like oxyacetylene, and therefore is not typically used for welding. However, oxy-propane cuts faster than oxyacetylene, and the cut edge is much cleaner than acetylene, which helps with heating and bending.

Propane gas is preferred for the heating and bending process. Propane is cheaper than acetylene and readily available. That is why oxy-propane is often used for scrap cutting. When mixed with oxygen, the maximum propane flame temperature is 2822°C (5112°F). For oxy-propane, a standard oxytorch can be used. However, it is not recommended. A special propane oxy torch is usually used. This is easier to light than an acetylene oxy torch and less likely to blow up.

 

Our Praxair gas inventory

Below are the gasses that we commonly stock from Praxair. If you need any other specialized gasses, please contact us to special order them for you.

Shielding Gasses

    • Carbon Dioxide – Industrial
      • CD 50
      • CD 20
      • CD 5
    • Argon – Straight Argon for TIG welding

      • AR T

      • AR S

      • AR Q

      • AR R

    • Stargon – 75/25 Mix for MIG welding

      • AR STAR14 T

      • AR STAR14 S

      • AR STAR14 Q

      • AR STAR14 R

Fuel gases

    • Acetylene
      • AC 5
      • AC 4
      • AC WSL
      • AC 2
      • AC WQ
      • AC B
      • AC MC
    • Propane
      • PR 20GG ( Gas Grill )
      • PR A33 ( Forklift )
      • PR 100

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Monday - Friday
7:30am - 4:30pm
Saturday
9:00am - 12:00pm
Sunday
Closed

We are open 6 days a week to accomplish any project as quickly as possible. Our expert team members are here to make it happen for you!

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Hours Of Operation

Monday - Friday
7:30am - 4:30pm
Saturday
9:00am - 12:00pm
Sunday
Closed
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Call: (765) 649-5577
Fax: (765) 641-1555

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