Sourcing steel argon cylinders from China

2% duty on steel argon cylinders

Read from the UK Trade Tariff on 1 October 2026, heading 7311 covers iron or steel containers for compressed or liquefied gas. Steel argon cylinders fall within this family. The selected seamless refillable lines distinguish pressure and water capacity; the gas name alone does not determine the commodity code.

All selected lines carry 2% duty for goods from China. The supplied snapshot lists no anti-dumping or countervailing duty and no steel measure. Its 0.00 % suspension is restricted to empty portable medical oxygen cylinders fitted with a valve and a pressure and flow regulator, so it does not cover argon cylinders.

The UK Trade Tariff attaches an import control of fluorinated greenhouse gases to these lines. Confirm the requirement for your empty or filled argon cylinders with your customs broker. Equipment containing banned fluorinated gases must not be placed on the Great Britain market. Confirm the commodity code using construction, pressure and capacity. See the steel nitrogen cylinder guide for related heading coverage.

Specify argon service, valves and filling compatibility

Specify whether the cylinders arrive empty or filled, the intended argon service, working and test pressures, water capacity, steel grade, heat treatment and internal finish. State the neck thread, valve inlet and outlet connections, cap or guard, dimensions and shoulder stamping. Ask your intended filling station to review the proposed cylinder and valve documents before production.

For cylinders used to carry gas by road, confirm their transportable pressure equipment status and applicable conformity assessment, inspection and marking requirements with the relevant authority. New cylinders placed on the Great Britain market require Rho marking. Ask for the certificate covering the exact design and the assessment body's details. HSE says obsolete design standards must not be used to manufacture new transportable pressure equipment. Agree the applicable design standard and use testing and certification support to review the evidence.

Worked duty example

Illustrative example, not a quote: Illustrative order: 50 empty seamless refillable steel argon cylinders 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 and batch test records to the delivered cylinder model, serial numbers, pressures and capacity.

Stamping: check that the conformity mark and agreed shoulder information are legible and match the documents.

Valves and threads: gauge sampled neck threads against the agreed valve specification and check outlet compatibility with the buyer's regulator.

Interior and transport damage: check sampled empty cylinders for moisture, scale and contamination; inspect valves, caps, paint, restraints and impact damage on arrival.

What goes wrong

An argon cylinder can match the ordered capacity yet arrive with an unsuitable valve outlet, mismatched neck thread or documents for another design. Moisture and scale inside the cylinder can contaminate the intended gas service. Missing caps and poor restraints can leave valves damaged during transport.

Agree the cylinder and valve together, link batch records to serial numbers, and arrange an interior check before loading. Compare the arrival condition with the dispatch records before accepting the batch for filling. Use the quality inspection guide to set the inspection brief.

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.