Profile: Alloy-Oxygen & Welding Supply Co., Inc. offers a full line of gases, welding supplies and specialty gases. We supply various industrial gases including liquid & high pressure oxygen, nitrogen, argon, carbon dioxide & helium, argon & helium based mixed gases, compressed air, acetylene & hydrogen. Welding equipment & power sources include conventional/inverter style power sources, diesel & gas driven welders, wire feeders, and automatic equipment.