Sourcing aluminium ventilation ducting from China

Zero duty on flexible aluminium ducting

Heading 8307 covers flexible tubing of base metal, with or without fittings. Aluminium ventilation ducting belongs within the other-base-metal branch where its construction meets that description. The table shows product variants under the same supplied commodity line, rather than separate tariff subdivisions.

Read from the UK Trade Tariff on 30 September 2026, code 8307 90 00 90 carries 0% duty for goods from China. The supplied record lists no anti-dumping or countervailing duty, suspension or attached import control for this line.

Confirm the commodity code using the duct wall construction and fittings, especially for products combining aluminium foil with plastic layers or insulation. For the wider heading, see flexible metallic electrical conduit.

Specify the duct wall and ventilation duty

State whether you need corrugated metal tubing or an interlocked strip construction. Specify aluminium material, wall thickness, internal diameter, supplied and extended length, bend radius, end connections and packing. Describe the airflow, pressure and temperature conditions. Agree leakage and bending tests for the exact construction before approving a sample.

For building applications, ask a product compliance adviser to identify the applicable construction-product route before approving markings. Where CE marking has been legitimately affixed to a construction product, it can continue to be supplied to the Great Britain market. Check that supporting documents identify the supplied model and intended use; arrange testing and certification checks where needed.

Worked duty example

Illustrative example, not a quote: Illustrative order: 1,500 lengths of flexible aluminium ventilation ducting under 8307 90 00 90, invoiced at £24,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £25,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £25,500, so it is £5,100. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Construction: compare production pieces with the approved sample, checking wall material, thickness, seam closure and any inner layers.

Dimensions: measure the bore and extended length, and trial-fit ends to the buyer's collars and clamps.

Performance: extend and bend samples using the agreed method, then check for seam opening, tearing, crushing and leakage.

Packing: check compressed lengths recover without damage, ends remain round and cartons identify the correct size and batch. Use an agreed inspection brief.

What goes wrong

A sample can feel flexible yet leave production ducts vulnerable to crushing or splitting when extended. Thin walls, loose interlocked seams and damaged ends can cause leakage or poor collar fit. Compare the delivered construction with the approved sample and test it after unpacking and bending.

Do not approve fire-performance or high-temperature descriptions from appearance alone. Ask for evidence matching the wall construction, any lining and the intended application. Agree how damaged or out-of-specification lengths will be recorded and handled before shipment.

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.