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HSChapter 73
U.S. imports of iron & steel containers for compressed or liquefied gas (HS 731100) totaled $33.8M in April 2026, traded with 34 countries.
Importers of Iron & Steel Containers for Compressed or Liquefied Gas paid $12.3M in duties in April 2026 — an effective duty rate of 41% on $30.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataPressure vessels and cylinders of iron or steel designed to store compressed or liquefied gas — including propane tanks, industrial gas cylinders, and seamless high-pressure bottles — are classified here and must comply with US Department of Transportation (DOT) regulations governing cylinder design, testing, and marking before they may be filled or placed in service. The US schedule distinguishes seamless steel containers not overwrapped and meeting exemption criteria (7311000030), other certified or exempt pressure containers (7311000060), and all remaining iron or steel pressure containers (7311000090). Mexico is the leading supplier, followed by India and China. Importers should confirm DOT specification compliance and any applicable Section 232 steel tariff treatment with a licensed customs broker.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US Department of Transportation (DOT) regulates the design, manufacture, testing, and marking of compressed gas cylinders under 49 CFR. Imported cylinders must meet applicable DOT specifications or special permits before they can be filled or transported in commerce. Importers should verify that foreign manufacturers hold the required approvals and that cylinders bear proper DOT markings at the time of entry.
Yes. The US schedule under this heading includes a dedicated line (7311000030) for seamless steel containers that are not overwrapped and meet specific exemption criteria, separate from other certified or exempt containers (7311000060) and the general residual line (7311000090). Seamless construction is a recognized specification distinction that can affect both classification and DOT compliance status.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7311000090 | IRON OR STEEL PRESSURE CONTAINERS NESOI | $27.9M | 39.43% | $9.8M |
| 7311000060 | IRON OR STEEL PRESSURE CONTAINERS, CERT OR EXM NES | $4.7M | 42.64% | $1.8M |
| 7311000030 | SMLS STEEL CONTAINRS FOR GAS, NT OVRWRPD, EXEMPT | $1.2M | 56.99% | $671K |
IRON OR STEEL PRESSURE CONTAINERS NESOI
IRON OR STEEL PRESSURE CONTAINERS, CERT OR EXM NES
SMLS STEEL CONTAINRS FOR GAS, NT OVRWRPD, EXEMPT
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7311000000 | CONTNRS FR CMPRSSD O LQFD GAS OF IRON O STEEL | $29.6M |
CONTNRS FR CMPRSSD O LQFD GAS OF IRON O STEEL
492.7K no
ARTICLES OF IRON OR STEEL NESOI
HS 732690
STRUCTURES AND PARTS NESOI OF IRON OR STEEL
HS 730890
THREADED SCREWS AND BOLTS NESOI OF IRON OR STEEL
HS 731815
COOKING APPLIANCES ETC FOR GAS FUEL, IRON OR STEEL
HS 732111
NUTS OF IRON OR STEEL
HS 731816
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $9.6M | $5.1M | -$4.6M |
| California | $6.7M | $1.2M | -$5.5M |
| Georgia | $564K | $5.9M | +$5.3M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| EAGLE PASS, TX | $6.9M | -- | -$6.9M |
| HOUSTON, TX | $3.4M | $3.2M | -$230K |
| LOS ANGELES, CA | $6.3M | -- | -$6.3M |