Containers for compressed or liquefied gas, of iron or steel
3 declarable lines
Heading 7311 covers containers for compressed or liquefied gas made of iron or steel, such as cylinders, bottles and tanks built to hold gas under pressure. It splits into three lines: 7311.00.00.30 for seamless steel containers that are certified to the cited 49 CFR safety requirements before export and marked with a listed DOT designation, 7311.00.00.60 for other containers certified to those same requirements or a specific exemption, and 7311.00.00.90 for everything else in the heading. All three lines carry a general (MFN) rate of Free.
Products in this heading
- Seamless steel cylinders marked DOT 3AA for industrial gases
- Steel propane (LPG) cylinders for grills and forklifts
- CO2 cylinders for beverage dispensing and welding
- Scuba and breathing air tanks of steel
- Refrigerant recovery cylinders
- Compressed air tanks for shop use
- Acetylene and oxygen cylinders for welding
- Steel gas cartridges for portable burners
How to choose the right subheading
- Confirm the article is a container that holds compressed or liquefied gas, not a container for liquids or solids.
- Confirm the body is of iron or steel.
- Check whether the container is seamless and marked with DOT 3A, 3AX, 3AA, 3AAX, 3B, 3E, 3HT, 3T or a DOT-E exemption number.
- Check whether it was certified before export to sections 178.36 through 178.68 of title 49 CFR, or to a specific exemption from them.
- If it is certified but not a seamless container with a listed DOT mark, use the residual certified line; if it is not certified at all, use the fully residual line.
Often confused with
- Heading 7309Large steel storage tanks over 300 liters for liquids
Heading 7309 covers reservoirs and tanks over 300 liters for material other than gas.
- Heading 7310Steel drums and cans up to 300 liters for liquids or solids
Heading 7310 covers small containers for material other than gas.
- Heading 7304Seamless steel pipe and tube
Plain tubes and pipes are classified by size and use, not as gas containers.
- Heading 7326Steel brackets, clamps and other hardware for mounting cylinders
These are general articles of iron or steel, not containers for gas.
Frequently asked questions
What is the HTS code for steel propane cylinders?
A steel propane cylinder that is not a DOT-marked seamless container certified to the cited 49 CFR sections falls in 7311.00.00.90, which carries a general (MFN) rate of Free. If it is seamless and certified and marked with a listed DOT designation, it falls in 7311.00.00.30, also Free.
What is the duty on gas containers from heading 7311?
The general (MFN) rate is Free on all three lines: 7311.00.00.30, 7311.00.00.60 and 7311.00.00.90.
How do I classify a seamless DOT 3AA cylinder?
A seamless steel cylinder marked DOT 3AA and certified before export to the cited 49 CFR safety requirements is classified in 7311.00.00.30 at a general (MFN) rate of Free. Other certified containers that do not meet that description go in 7311.00.00.60, also Free.
Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.
All lines in heading 7311
- 7311.00.00.30Seamless steel containers not overwrapped, marked DOT 3A, 3AX, 3AA, 3AAX, 3B, 3E, 3HT, 3T or DOT-E followed by a specific exemption numberFree
- 7311.00.00.60Containers for compressed or liquefied gas, of iron or steel / OtherFree
- 7311.00.00.90Containers for compressed or liquefied gas, of iron or steel / OtherFree