Sourcing steel hydrogen cylinders from China

2% duty on steel hydrogen cylinders

Read from the UK Trade Tariff on 1 October 2026, heading 7311 covers iron or steel containers for compressed or liquefied gas. The listed steel hydrogen cylinder lines carry 2% duty on goods from China. The supplied tariff record shows no anti-dumping or countervailing duty and no steel trade measure on these lines.

The recorded 0% suspension applies only to specified empty portable medical oxygen cylinders fitted with a valve and pressure and flow regulator, so it does not cover hydrogen cylinders. The tariff attaches an import control of fluorinated greenhouse gases to these lines. For empty hydrogen cylinders from China, ask your customs broker to confirm the applicable declaration and documents before shipment.

Confirm the commodity code using construction, working pressure, water capacity and the refillable-cylinder description. Confirm with HMRC or your customs broker whether these lines fall within the UK carbon border adjustment mechanism from 1 January 2027. Ask the factory for steel emissions data and consult the UK carbon border adjustment guide.

Specify hydrogen service and the complete valve

State hydrogen service explicitly. Ask for design and material evidence covering that service, including resistance to hydrogen embrittlement. Agree the steel grade, heat treatment, working and test pressures, water capacity, dimensions and internal cleanliness. Have the intended filling operator review the proposed cylinder and valve before ordering.

Specify both the cylinder neck thread and the valve outlet connection, valve materials, seals, protective cap and shoulder stamping. For cylinders used to carry gas by road, confirm the applicable conformity assessment, inspection and marking requirements with the relevant authority. New transportable cylinders supplied directly from China for the Great Britain market need Rho marking. Ask for documents covering the exact design and supplied batch; our testing and certification service can help organise document checks.

Worked duty example

Illustrative example, not a quote: Illustrative order: 50 empty seamless steel hydrogen cylinders of 50 litres under 7311 00 13 80, invoiced at £8,000 free on board, with £2,000 of freight and insurance to the UK. The customs value is £10,000. Duty at 2% is £200. Import VAT at 20% is charged on the customs value plus duty, £10,200, so it is £2,040. Import taxes total £2,240; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £200 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Documents: match the design certificate, hydrogen-service specification and batch test records to the cylinder model and serial numbers supplied.

Stamping: check sampled cylinders for legible serial numbers, working and test pressures, water capacity, tare weight, manufacturing date and the agreed conformity marking.

Valves and threads: gauge neck threads against the approved drawing, check valve outlets against the buyer's filling connection and review recorded leak-test results.

Interior and packing: check sampled interiors for moisture, rust and scale, then check valve protection and restraints on arrival. Use the quality inspection guide to agree inspection stages.

What goes wrong

A quotation may describe a general industrial gas cylinder without evidence for hydrogen service. Other problems include mismatched valve outlets, unreadable shoulder stamping, moisture inside the cylinder and certificates that cover a different model. Resolve these points against the approved specification before accepting the batch.

Agree document review with the intended filling operator before production and keep serial-number records with the inspection report. For related steel gas-container classification, see steel CNG cylinders; specify hydrogen service separately for this order.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.