Industrial Compressed Oxygen Gas
Pure oxygen gas compressed to high pressure for use in welding, cutting, and metal fabrication processes. Falls under HTS 2804.40.00.00 as chemically defined elemental oxygen, distinct from mixtures or compounds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If nitrogen instead of oxygen
Pure nitrogen gas classified separately under 2804.30 within the same hydrogen/rare gases/nonmetals heading.
If prepared as mixed welding gas with acetylene
Oxygen-acetylene mixtures for welding are specifically covered as mixed gases in heading 3817.
If imported as part of complete oxy-fuel torch apparatus
Assembled equipment with oxygen supply moves to machinery of Chapter 84.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Declare as hazardous material (Class 2.2 non-flammable gas) with proper UN1072 marking on cylinders
• Include material safety data sheets (MSDS) and ensure cylinders meet ASME standards
• Avoid common pitfall of insufficient pressure vessel certification
Related Products under HTS 2804.40.00.00
Medical Grade Oxygen USP
High-purity oxygen meeting United States Pharmacopeia (USP) standards for medical applications such as respiratory therapy and anesthesia. Classified under HTS 2804.40.00.00 as elemental oxygen, a nonmetal gas, in its chemically pure form without additives.
Aviation Breathing Oxygen
Oxygen conforming to military specifications (e.g., MIL-PRF-27210) for use in aircraft emergency oxygen systems and pilot breathing masks. Classified in HTS 2804.40.00.00 as pure oxygen gas, not as an aircraft part.
Liquid Oxygen LOX
Cryogenically liquefied oxygen at -183°C used for rocket propulsion, medical cryotherapy, and industrial freezing. Remains under HTS 2804.40.00.00 as the elemental nonmetal oxygen regardless of physical state.
High-Purity Research Oxygen-18 Isotope
Enriched oxygen-18 stable isotope gas (>97% purity) for PET imaging tracers and metabolic research. Still classified under HTS 2804.40.00.00 as oxygen, since stable isotopes of nonmetals remain in Chapter 28 unless radioactive.
Welding Oxygen CGA 346 Cylinder
Standard welding-grade oxygen filled in CGA 346 valve cylinders for oxy-acetylene and oxy-fuel applications. Classified as pure oxygen under HTS 2804.40.00.00; cylinder is packaging.
Hyperbaric Oxygen Therapy Gas
Ultra-pure oxygen (>99.99%) for hyperbaric chambers treating decompression sickness and wound healing. HTS 2804.40.00.00 applies to the elemental oxygen gas itself.