Harmonized System
U.S. imports of Iron & Steel Containers for Compressed or Liquefied Gas (HS 731100) totaled $26.5M in August 2026, imported from 38 countries.
Importers of Iron & Steel Containers for Compressed or Liquefied Gas paid $12.2M in duties in August 2026, an average duty rate of 46.80% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Iron & Steel Containers for Compressed or Liquefied Gas imports of $26.5M in August 2026 ran 18% below the year-to-date monthly average of $32.3M.
Last updated: August 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.
823 import shipments a month
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.
Trade Directory
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Subheading 1 of 1 in heading 7311
Subheading 731100 · $26.5M of $26.5M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7311000090 | Iron or Steel Pressure Containers NESOI | $19.7M | 44.05% | 95.10% | $8.7M |
| 7311000060 | Iron or Steel Pressure Containers, Cert or Exm Nes | $3.7M | 48.78% | 87.87% | $1.8M |
| 7311000030 | Smls Steel Containrs for Gas, Nt Ovrwrpd, Exempt | $2.6M | 64.89% | 97.41% | $1.7M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7311000000 | Contnrs Fr Cmprssd O Lqfd Gas of Iron O Steel | $28.2M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · August 2026
origin
China and India together supply 43% of it. China pays 70.4% duty; Canada 9.6%.
customs district
destination
entry
rate provision · imports
5.6% enters free of duty; duty collected equals 46.80% of imports for consumption.
ImportsExports
Imports
$26.5MYoY · free account
Exports
$28.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $387.1M of Iron & Steel Containers for Compressed or Liquefied Gas and exported $309.6M.
Through August 2026. Source: U.S. Census Bureau.