Sourcing aluminium nitrogen cylinders from China

Duty on aluminium nitrogen cylinders

Read from the UK Trade Tariff on 1 October 2026, heading 7613 covers aluminium containers for compressed or liquefied gas. Aluminium nitrogen cylinders under 7613 00 00 90 carry 6% duty from China, with no trade remedy listed in the supplied tariff record. Its suspensions cover specified natural-gas or hydrogen containers and portable medical oxygen cylinders, not nitrogen cylinders. The table shows configurations sharing the same tariff line.

The UK Trade Tariff attaches an import control of fluorinated greenhouse gases to this code. Official guidance requires quota for importing bulk hydrofluorocarbons into Great Britain. It does not establish the declaration requirement for these nitrogen cylinders, so confirm that requirement with your customs broker, using the actual contents and intended gas service.

Confirm the commodity code for the supplied cylinder and any separately supplied valves or regulators. See the aluminium argon cylinder guide for wider heading coverage. Ask your customs broker to confirm whether and when this heading falls within the aluminium sector of the UK carbon border adjustment mechanism; see the UK carbon border adjustment guide.

Specify nitrogen service and filling connections

Specify compressed nitrogen service, water capacity, working and test pressure, alloy, dimensions, weight, neck thread and valve outlet. State whether the order comprises empty cylinders, valve-fitted cylinders or filled cylinders. Agree the valve and regulator connections with your UK filler before approving the sample.

For new finished cylinders supplied directly into Great Britain as transportable pressure equipment, arrange conformity assessment and Rho marking. A Great Britain-appointed inspection body can authorise that marking. Ask for the design approval, batch test records and serial-number list before production, and match them to the ordered cylinder design.

Worked duty example

Illustrative example, not a quote: Illustrative order of 2,000 empty aluminium nitrogen cylinders, not a quotation under 7613 00 00 90, invoiced at £48,000 free on board, with £2,400 of freight and insurance to the UK. The customs value is £50,400. Duty at 6% is £3,024. Import VAT at 20% is charged on the customs value plus duty, £53,424, so it is £10,684.80. Import taxes total £13,708.80; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £3,024 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Approval: match the design approval and batch certificates to the cylinder model, working pressure, manufacturer and serial numbers.

Connections: gauge neck threads and compare the fitted valve outlet with the connection agreed with your filler.

Condition: inspect incoming cylinders for dents, damaged necks, corrosion and coating damage; compare dimensions and weight with the approved specification.

Marking and packing: check stampings and Rho marking against the approval documents, reconcile serial numbers with the packing list, and inspect protection around valves and necks.

What goes wrong

A certificate for another cylinder design does not resolve approval for your order. Threads can differ from the approved sample, valve outlets can mismatch the intended regulator, and handling damage can lead to rejection at inspection. Get your filler's acceptance of the design and connections before ordering, then compare production cylinders with that agreed specification.

Check records and physical cylinders together through quality inspection. Keep the serial-number list and test records with the stock, and plan for periodic inspection and testing during use. Ask for missing approval documents before dispatch rather than trying to resolve them after arrival.

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.