- Air Liquide
 - International industrial group specialising in industrial and medical gases and related services. - Praxair
- Supplies atmospheric, process, and speciality gases, high-performance coatings, and related services and technologies.
- Airgas
- Distributes industrial, medical, and speciality gases, welding machines, accessories, and protective equipment. Airgas also manufactures dry ice and nitrous oxide.
- Spectra Gases, Inc.
- Manufacturer of speciality gases and gas related products.
- Scott Specialty Gas
- World supplier of high-purity gases, gas mixtures and gas handling equipment for all types of scientific, industrial and medical applications.
- Chemgas
- Supplier of metal-stable isotopes and isotopic gases including helium-3, xenon, and neon.
- American Gas Group
- Manufacturer and distributor of gases, including xenon, neon, krypton, nitric oxide, and sulphur hexafluoride, as well as propane and welding gases.
- Roberts Oxygen
- Distributes oxygen and other compressed, medical, and speciality gases. Also offers welding equipment and support services.
- Mittler Supply
- Supplying industrial gases and welding equipment.
- Advanced Extraction Technologies, Inc.
- Technology licensing, engineering services and applied research company offering products that relate to treating, upgrading and processing of light hydrocarbon gases.
- Andonian Cryogenics
- IronWood Designs
- Offers BlOxygen, a pressurized can of inert gases that prevents finishing liquids from drying out during storage.
- Tri-Gas Industrial Gases, Inc
- Special gases, bulk and cylinders, health care, welding supplies and distribution services.
- Matheson Tri-Gas, Inc.
- Supplies bulk and speciality gases and gas handling equipment.
- Valley National Gases
- Packager and distributor of industrial, medical, and speciality gases, welding equipment and supplies, propane, and fire protection equipment.
- Advanced Specialty Gases
- Offering rare and speciality gases including sulphur hexafluoride, halocarbon refrigerant gases, and speciality mixtures.
- MESA Specialty Gas & Equipment
- Global supplier of speciality gas, calibration gas, rare gas, and hydrocarbon standards for instrument applications. Additional products include gas handling equipment.
- A-L Compressed Gases
- Purchase calibration gas and accessories.
- Energas Limited
- Supplier of industrial cylinder gases as well as engineering and welding equipment.
- Nova Gas Technologies
- Supplier of argon fluoride, krypton fluoride, and hydrogen chloride excimer laser gas mixtures used in semiconductor and medical laser systems.
- Union Industrial Gas Group
- Provides repackaged industrial, medical, and speciality gases. Also offers related welding equipment, industrial supplies, welding rental equipment, and repair services.
- C.F.C. Reclamation and Recycling Service, Inc
- Provides reclamation services and recovery/recycling systems for high and low pressure HVAC/R applications.
- Hede Nielsen A/S
- Manufacturer of gases for industrial, medical and special purposes.
- Spec Air Specialty Gases
- Manufacturer of calibration, speciality, and analytical gases, with an environmentally friendly alternative to disposable cylinders.
- Arc Gas Products
- Offering welding equipment & supplies for both industrial & speciality markets.
- Intergas Ltd
- Manufactures a wide range of pure special gases, gravimetrically produced gas, liquid mixtures and associated control equipment.
- Inweld Corp.
- Distributor of welding supplies and industrial gases, especially high purity research gases and mixtures. Also located in Terre Haute, Evansville, and Lafayette.
- BOC Gases
|
