Nitrogen Welding Gas
High-purity nitrogen gas supply for industrial processing, purging, cryogenic applications, and manufacturing operations.
Nitrogen Gas Supply for Industrial Applications
Havard Welding is a nitrogen gas supplier operating in East Houston and the surrounding Gulf Coast with compressed and liquid nitrogen welding gas for manufacturing, industrial processing, laboratories, cryogenic applications, and inert gas systems. We supply nitrogen gas cylinder tanks, liquid nitrogen welding gas, and bulk solutions to meet a wide range of industrial requirements.
About Nitrogen Gas
Nitrogen (N₂) makes up approximately 78.03% of Earth's atmosphere. It is a colorless, odorless, and tasteless gas with a gaseous specific gravity of 0.967 and a boiling point of -320.5°F (-195.8°C) at atmospheric pressure. Its chemically stable and nonreactive characteristics make it one of the most widely used industrial gases across manufacturing, laboratories, food processing, electronics, and chemical production.
Commercial nitrogen is produced through several air separation technologies, including cryogenic liquefaction and distillation, pressure swing adsorption (PSA), and membrane separation. While nitrogen remains inert under most conditions, it can react with certain materials when exposed to elevated temperatures, catalysts, or specific chemical reactions. For this reason, it is not typically used as a shielding gas for welding applications.
Nitrogen Gas Applications
Nitrogen supports a wide range of industrial processes where oxidation control, product protection, or inert environments are required.
Industrial Purging
Used to remove oxygen and moisture from piping systems, pressure vessels, storage tanks, and process equipment before startup or maintenance.
Chemical Manufacturing
Provides inert atmospheres for chemical processing, material handling, and production systems where oxidation must be minimized.
Cryogenic Cooling
Liquid nitrogen is widely used for cryogenic grinding, biological preservation, laboratory research, shrink fitting, and rapid cooling.
Food Packaging
Helps extend product shelf life by reducing oxygen exposure during food packaging and storage operations.
Electronics & Processing
Supplied for semiconductor manufacturing, electrical equipment, laser systems, and precison industrial applications.
Safety & Chemical Specifications
DOT Information
| Property | Specification |
|---|---|
| DOT Shipping Name | Nitrogen |
| Hazard Class | Nonflammable Gas |
| DOT Label | Nonflammable Gas |
| UN Number | UN1066 |
| CAS Number | 7727-37-9 |
| Valve Outlet | CGA 580 |
| Cylinder State | Compressed Gas |
| Major Hazards | High Pressure, Simple Asphyxiation |
| Fire Potential | Nonflammable |
Physical Properties
| Property | Value |
|---|---|
| Chemical Formula | N₂ |
| Molecular Weight | 28.013 lb/mol |
| Specific Volume (70°F, 1 atm) | 13.8 ft³/lb (12.00 m³/kg) |
| Specific Heat | 6.97 BTU/lbmol-°F @ 70°F |
| Specific Gravity | 0.967 |
| Gas Density | 0.07247 lb/ft³ @ 70°F, 14.7 PSIA |
Boiling Point
| Temperature: | -320.5°F (-195.8°C) |
| Liquid Density: | 50.50 lb/ft³ |
| Latent Heat: | 85.5 BTU/lb |
Critical Point
| Temperature: | -232.4°F |
| Pressure: | 492.9 PSIA |
Melting Point
| Temperature: | -346.0°F |
| Pressure: | 1.82 PSIA |
Available Nitrogen Gas Cylinder Sizes
* Denotes lightweight aluminum cylinder
Industrial Compressed Gas Cylinders
| PART NUMBER | CYL SIZE | WEIGHT OF GAS (LBS.) | APPROX. WT OF FULL CYL (LBS.) | PRESSURE (PSI @ 70F) | GALLONS | LITERS | DIMENSIONS (Height x Diameter) |
|---|---|---|---|---|---|---|---|
| NIT020 | 20 ft³ | 1.449 | 14 | 2015 | 149 | 566 | 18" x 5-1/2" |
| NIT058* | 58 ft³ | 4.202 | 25 | 2015 | 433 | 1642 | 27" x 8" |
| NIT115 | 115 ft³ | 8.3313 | 65 | 2217 | 860 | 3257 | 48" x 7" |
| NIT143* | 143 ft³ | 10.360 | 52 | 2217 | 1069 | 4049 | 47" x 8" |
| NIT230 | 230 ft³ | 16.663 | 150 | 2217 | 1721 | 6514 | 51" x 9" |
| NIT304 | 304 ft³ | 22.025 | 180 | 2640 | 2274 | 8609 | 55" x 9-1/4" |
Medical Compressed Gas Cylinders
| PART NUMBER | CYL SIZE | WEIGHT OF GAS (LBS.) | APPROX. WT OF FULL CYL. (LBS.) | PRESSURE (PSI @ 70F) | GALLONS | LITERS | DIMENSIONS (Height x Diameter) |
|---|---|---|---|---|---|---|---|
| NITE | 23 ft³ | 1.667 | 10 | 2015 | 172 | 651 | 30" x 4-1/4" |
| NITM | 115 ft³ | 8.3313 | 65 | 2217 | 860 | 3257 | 48" x 7" |
| NITH | 230 ft³ | 16.663 | 150 | 2217 | 1721 | 6514 | 51" x 9" |