Get the gases you need, delivered on time. We supply oxygen, nitrogen, argon, helium, acetylene, CO2, and custom mixes for welding, cutting, beverage, and specialty applications across Arizona. Backed by Air Water America resources with responsive local service.
Oxygen, nitrogen, argon, helium, acetylene, CO2, and mixed gases in the sizes you use every day.
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UHP Gases for specialty automated machines, laser equipment and precision manufacturing.
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Beverage Grade CO2, beer gas blends, and route delivery to keep taps pouring and soda fountains fizzing.
Learn MoreWe’ll size cylinders or microbulk for your demand and help you choose the right purity and mix.
Phoenix Welding Supply operates Arizona’s only acetylene production, giving you local control, dependable lead times, and consistent quality for oxy-fuel work.
We’re proud to be the Arizona’s largest manufacturer and supplier of acetylene gas, but that’s just part of the story. From welding equipment and industrial gases to CO₂ for beverage systems, we provide the products and service that keep businesses running strong.
From 400 lb to 14 ton systems, our CO2 specialists handle layout, permitting support, tank placement, startup, and safety training for breweries, restaurants, cannabis operations, and distributors.
Reliable supply of oxygen, argon, nitrogen, acetylene, and mixes to keep production on schedule.
Portable cylinders, flame cutting gases, PPE, and fast exchanges near job sites.
Breweries and venues that require Beverage Grade CO2 and beer mixes plus bulk CO2 systems.
Right-sized gas packages, equipment, and safety support for classrooms and shops.
We deliver across Arizona, and our AZ Air Boutique division has dedicated vans for balloons and helium. Visit any branch in Phoenix, Mesa, Deer Valley, Tucson, Flagstaff, or Sierra Vista.
Compressed gases (approximate capacity at typical fill pressure; availability varies):
| Approx. capacity (scf) | Typical gases | |
|---|---|---|
| 20 | O2, N2, Ar, Ar‑mixes | |
| 40 | O2, N2, Ar, Ar‑mixes | |
| 80 | O2, N2, Ar, Ar‑mixes | |
| 125 | O2, N2, Ar, Ar‑mixes | |
| 150 | O2, N2, Ar, Ar‑mixes | |
| 200 | O2, N2, Ar, Ar‑mixes | |
| 300 | O2, N2, Ar, Ar‑mixes |
Acetylene (dissolved; approximate cubic feet):
| Size | Approx. capacity (cf) | Notes |
|---|---|---|
| MC | 10 | Portable/torch kits |
| B | 40 | Common field size |
| #3 / “75” | 75 | Shop / light fab |
| #4 / “145” | 145 | General shop |
| #5 / Large | ~400 | Large industrial (varies by manufacturer) |
CO₂ (beverage/industrial) — capacity by weight:
| Cylinder | Weight (lb) | Options |
|---|---|---|
| Small | 5 | Counter exchange |
| Medium | 10 | Counter exchange |
| Standard | 20 | Siphon/dip‑tube available |
| Large | 50 | Siphon/dip‑tube available |
Notes: capacities are approximate; actual scf depends on gas and fill pressure. CO₂ is sold by weight. Large acetylene capacities vary by brand (common “#5” cylinders are ~397–420 cf). Always confirm availability with your nearest branch.
Industrial oxygen, nitrogen, argon, helium, acetylene, CO2, and mixed gases. We also supply UHP specialty and laser gases.
Yes. We run scheduled routes across Arizona and can arrange on-demand service.
Yes. We provide turnkey design and installation including tank placement, startup, permitting, and safety training.
No. We do not service or repair equipment.
Phoenix, Mesa, Deer Valley, Tucson, Flagstaff, and Sierra Vista. See location pages for addresses and hours.
SURE-SHIELD is our line of argon based shielding gas blends engineered for consistent performance from the first arc to the last. These mixtures are produced for two, three, and four part formulas that include carbon dioxide, delivering stable arcs and uniform weld quality cylinder to cylinder.
Designed for shielded welding and cutting processes including GMAW (MIG), GTAW (TIG), FCAW, and Plasma.
| Mix Number | Gas Mixture |
|---|---|
| MIX 1 | 75% Argon, 25% Helium |
| MIX 2 | 50% Argon, 50% Helium |
| MIX 3 | 75% Helium, 25% Argon |
| MIX 4 | 98% Argon, 2% Oxygen |
| MIX 5 | 95% Argon, 5% Oxygen |
| MIX 6 | 90% Argon, 10% CO2 |
| MIX 7 | 85% Argon, 15% CO2 |
| MIX 8 | 75% Argon, 25% CO2 |
| MIX 9 | 90% Helium, 7.5% Argon, 2.5% CO2 |
| MIX 20 | 81% Argon, 18% Helium, 1% CO2 |
| MIX 23 | 91% Argon, 4% Oxygen, 5% CO2 |
| MIX 30 | 65% Argon, 35% CO2 |
| MIX 31 | 90% Argon, 8% CO2, 2% Oxygen |
Email: sales@phxwelding.com | Visit: Find a branch
Argon is a stable, inert shielding gas that delivers clean welds and consistent results. It is the preferred choice for TIG and MIG welding of stainless steel, aluminum, and specialty alloys.
Get started: Get an argon quote or visit a branch near you.
Carbon dioxide is a versatile gas used for welding, beverages, refrigeration, and inert blanketing in chemical processing. We stock multiple purities and packages and can design and install bulk CO2 systems for high volume users.
Note: We do not supply medical grade gases.
Get started: Request CO2 pricing or find a branch near you.
Helium is a lighter than air, non reactive gas used for TIG and MIG on nonferrous metals, leak detection, laboratory work, and lifting applications. We also support balloon helium through our delivery network.
Get started: Request helium pricing or find a branch near you.
Acetylene is a colorless, flammable fuel gas with a faint garlic-like odor. Thanks to its triple-bond structure, it produces the hottest common hydrocarbon flame when combined with oxygen, reaching up to 5,580°F (3,087°C) and releasing about 1,470 BTU per cubic foot. That heat and energy make acetylene the go-to choice for fast cutting, welding, brazing, soldering, and heating.
Get started: Request acetylene pricing or visit a branch near you.
Nitrogen is an inert, dry gas ideal for purging, blanketing, pressure testing, food packaging, laser assist, and cryogenic applications. We supply N2 in industrial, instrument, and ultra high purity grades.
Note: We do not supply medical grade gases.
Get started: Request nitrogen pricing or find a branch near you.
Oxygen is the workhorse oxidizer for oxy-fuel cutting, welding, heating, and combustion processes across Arizona. We stock O2 in the sizes you use every day and support high volume users with bulk liquid systems.
Note: We do not supply medical grade gases.
Get started: Request oxygen pricing or find a branch near you.
For high volume users, an on-site bulk system is a reliable and cost-effective way to supply liquid argon, carbon dioxide, hydrogen, nitrogen, oxygen, and select semiconductor process gases. We deliver high purity product from our production partners to your storage tank, then keep it flowing with proactive service and monitoring.
Before we recommend a system, our local team reviews your usage pattern, purity requirements, flow rate, pressure, and site layout. We size the tank and vaporization equipment, plan pad placement and piping runs, and coordinate delivery and commissioning to match your operations.
We use secure telemetry to track your cryogenic inventory in real time and place refill orders automatically, helping prevent downtime and emergency calls. Monitoring is available for:
Upgrading or relocating your system? We provide temporary installations and special services to maintain product flow during changeouts, maintenance, or seasonal peaks.
Request a site assessment and get a quote. We will design a right sized bulk solution that meets your safety, quality, and cost targets.
