Office Hours

Mon – Fri: 08:00am – 04:00pm

Celebrating 65 Years, Family Owned!

Oxygen and Welding Supply Company

City Welding has been in business since 1958 with the same owners. We are welding & industrial gas application experts- offering over 50 years of expertise. Our service and supplies are used by many top organizations in the Chicago area. We serve any size customer.
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different sets of pressure tank

City Welding

Gases Available

Pure Argon

AR, inert, non-flammable. Common applications: TIG (tungsten inert gas) welding process, argon in used for the joining of stainless steel, mild steel, aluminum, nickel and copper alloys. It is also used in the MIG(metal inert gas) welding process for the joining of aluminum.

Nitrous Oxide

N2O, oxidizer-non-flammable, N2O, Common applications for Nitrous Oxide include: Scientific experimentation, the enhancement or acceleration of combustion in high performance or race car engines.

Helium

HE, inert, non-flamable. Common applications include: Balloon inflating, Scientific experimentation, MIG and TIG welding applications, HeliOx mixtures for scuba diving applications, inert atmospheres. available in industrial grade and special scientific purity grades 2.9 through grade 5.5 or research purity.

Hydrogen

H2, semi inert, flammable. Common applications include: TIG welding blends, hydrogen welding blends, plasma welding blends, high intensity light manufacturing, heat treating atmospheres, scientific atmospheres and experimentation. Available in industrial grade through special scientific purity grades, research grade 5.5.

Argon Mixes

Common uses for industrial argon mixture include: argon/CO2, 75/25 or C25, 90/10 or C10, 95/5 or C5. these mixes are commonly used for the MIG welding of mild steel and in some cases, stainless steel in the short circuit and modified trasfer methods of filler metal transfer. Argon/oxygen mixtures such as 98/2 (98%AR/2% O2) are used in the spray trasfer method of mild steel filler metal transfer. Argon/hydrogen mixtures such as Argon95% / hydrogen 5% are commonly used in plasma welding. Argon containing 1, 2,3% hydrogen are most commonly used in the tig welding of stainless steel where high travel speeds might be required, such as in robotic automation or automatic stainless tube seam welding.

Nitrogen

N2, semi inert, non-flammable. Common uses include: Nitrogen in mostly an inert molecule that is often used as a high pressure source for pressure testing of parts and equipment, charging of hydraulic accumulators, charging of paintball gun cartridges, air powered pellet and BB rifles, can be used as a laser assist gas for stainless steel or where finer cuts may be desired. it is used in heat treating atmospheres, it is used for its fire suppression properties, it is used as a food fresh preservative atmosphere. It is used for automotive tire filling and shock absorber charging. It has many scientific applications such as gas chromatography. Available in industrial grade through specialy gas scientific purity, " research " or grade 5.5.

Acetylene

C2H2, flammable. Common uses include: Oxygen/Acetylene flame cutting and welding, flame ionization/ atomic absorption.

Propane

C3H8, Common uses include: Oxygen/Propane flame cutting and welding, temporary heat, BBQ grilling, weed burner.

Carbon Dioxide (CO2)

semi inert, non-flammable. Common applications for CO2 in Chicago include: beverage carbonating, beer dispensing, fire suppression, MIG welding of steel, pipe freezing, the making of "dry Ice", pool water treating, (PH neutralizing), paintball cartridge refilling, and artificial grow environments. Available in industrial grade and special purity scientific grades through research grade 5.5.

Oxygen

O2, oxidizer, Common uses for oxygen in Chicago include: oxygen/acetylene welding and cutting, oxygen/propane welding and cutting, oxygen/mapp or propylene welding and cutting, oxygen/hydrogen welding and cutting, laser assist gas, aviators breathing oxygen. Lab/scientific applications. Available in industrial through specialty scientific purity, through 4.3 grade levels.
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City Welding

About Us

Our Chicago oxygen and welding supply company has been family owned and run since 1958. John Coffey started the business in October of 1958 and his son, Shawn Coffey has run it since 1980.
Our history reads like this: My maternal grandfather was a gentleman named John C. Ardagh, John was Born in Chicago, IL in 1900 to parents that immigrated from Ireland by way of Ontario, Canada.
By age 13 he already had his first job in the metal working trades doing various jobs as an iron worker helper, including bucking hot rivets, when that was the method of building metal infrastructures. Soon thereafter, he was interrupted by World War I, “the war to end all wars” (that axiom didn’t quite work out, did it?).
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door entrance with pressure tank steel outside

65 +

Years

City Welding

Chicagoland Delivery Areas

We service all areas in and outside of Chicago. We deliver to all areas in Cook County including Evanston, Lincolnwood, Northbrook, Skokie, and all throughout Lake County IL.
We deliver to all suburbs including: Antioch, Fox Lake, Grayslake, Gurnee, Highland Park, Ingleside, Lake Bluff, Lake Forest, Lake Zurich, Libertyville, Mundelein, Vernon Hills, Wauconda, and Waukegan. In McHenry County: Crystal Lake, Harvard, McHenry, Spring Grove.
Other suburbs in our territory include: Addison, Arlington Heights, Aurora, Bensenville, Bolingbrook, Buffalo Grove, Burr Ridge, Cicero, Des Plaines, Deerfield, Elgin, Elmhurst, Franklin Park, Gilberts, Glenview, Hampshire, Lombard, Melrose Park, Morton Grove, Mt. Prospect, Naperville, Niles, Norridge, Orland Park, Palatine, Park Ridge, Streamwood, Wheeling, Willow Springs, Wilmette, Zion, etc.
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City Welding

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