Sourcing steel bitumen tanks from China

Zero duty depends on the tank configuration

Read from the UK Trade Tariff on 1 October 2026, the relevant heading 7309 lines carried 0% duty for goods from China. The supplied tariff facts list no anti-dumping or countervailing duty, suspensions, steel-measure condition or import controls on these lines.

Heading 7309 covers steel containers exceeding 300 litres without mechanical or thermal equipment. Insulation is permitted, but fitted heating or cooling jackets and agitators change classification. Specify the equipment supplied with the tank before ordering. The solids row concerns containers for solid bitumen, rather than liquid storage. For the wider heading, see steel diesel storage tanks.

Confirm the commodity code against the complete assembly and intended contents. Confirm with your customs broker whether these lines fall within the steel scope of CBAM for imports planned from 1 January 2027; consult the UK CBAM guide when planning imports.

Specify the bitumen and the tank assembly

State whether the contents are hot bitumen, a liquid bitumen-based product or solid material. Agree working capacity, steel grade, plate thickness, operating temperature, design pressure, insulation construction and weather cladding. Put fill, outlet, vent, drain and manway positions on the approved drawing, together with supports and lifting points.

Separate insulation from heating equipment in the quotation. Identify any coils, jackets, heaters, pumps or agitators, and ask the customs broker to assess the complete supplied assembly. Agree thermal expansion arrangements, outlet accessibility and how the tank will be drained, cleaned and dried after testing.

HSE states that articles supplied for use at work must be safe, so far as reasonably practicable, and accompanied by adequate information for safe use. Obtain operating and maintenance instructions. For a vessel with a maximum allowable pressure above 0.5 bar, confirm with HSE whether the Pressure Equipment (Safety) Regulations 2016 apply and whether any exclusions are relevant. Agree the site containment design for the actual stored material.

Worked duty example

Illustrative example, not a quote: Illustrative order: four 20,000-litre insulated steel bitumen storage tanks without mechanical or thermal equipment under 7309 00 30 00, invoiced at £60,000 free on board, with £8,000 of freight and insurance to the UK. The customs value is £68,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £68,000, so it is £13,600. 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

Materials: match plate certificates to the approved steel grade and tank identification; measure shell and bottom thickness against the drawing.

Welds: inspect seams, nozzle welds and support attachments; review agreed non-destructive examination and leak-test records, including repairs and retests.

Bitumen interfaces: check outlet position, drainability, vent openings, insulation continuity and access to connections; confirm that test water has been removed and the tank is dry.

Arrival: inspect dents, damaged cladding, lifting points, saddles and loose fittings before unloading; compare delivered equipment with the packing list and approved drawing. Agree checks through quality inspection.

What goes wrong

A quotation describes an insulated storage tank, but the delivered assembly includes heating equipment that changes its tariff classification. Missing vent details, inaccessible outlets or a layout that leaves trapped material can also make the tank unsuitable for the buyer's process.

Weld leaks, thin plate and damaged supports are difficult to resolve after installation. Insulation can conceal shell defects, while damaged cladding allows moisture beneath it. Agree inspection stages before insulation is fitted, retain repair records and photograph the tank before shipment and on 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.