Sourcing tantalum furnace boats from China

Zero duty and the boat's commodity code

Read from the UK Trade Tariff on 1 October 2026, heading 8103 covers tantalum and articles thereof, including waste and scrap. Every supplied line carries 0% duty for goods from China, with no anti-dumping or countervailing measure and no suspension listed. The comparison rows distinguish finished articles, manufacturing sheet, crucibles and scrap.

The UK Trade Tariff attaches import and export waste controls to every supplied line. Environment Agency guidance for England says waste shipment controls apply only where the material is waste. For discarded or contaminated boats from China, confirm the applicable requirement with your customs broker before shipment; the precise waste procedure has not been established here.

Treat 8103 99 90 00 as a candidate for finished boats, rather than an automatic classification. Give your broker the drawing, material, manufacturing method and intended use, and confirm the commodity code. Compare vessel forms in the wider tantalum crucibles guide. Import VAT is normally 20%; see UK import duty and VAT.

Specify the boat around the furnace process

State whether the boat holds a charge on a furnace support or is heated through electrical contacts. Supply a drawing showing overall length, trough width and depth, wall thickness, bend radii, end tabs and any holes. Specify tantalum composition, permitted impurities, surface finish and whether seams or welds are acceptable.

Describe the charge material, atmosphere, heating cycle and support arrangement. Agree a sample trial in the intended process, with acceptance criteria for distortion, leakage and contamination. Ask for batch-linked chemistry results. UK REACH generally covers substances in articles, so review the supplied composition when assessing your obligations.

Worked duty example

Illustrative example, not a quote: 200 small tantalum furnace boats; illustrative order and values only under 8103 99 90 00, invoiced at £2,000 free on board, with £800 of freight and insurance to the UK. The customs value is £2,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £2,800, so it is £560. 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

Material: match the batch identity to the chemistry report and arrange independent composition testing where contamination would affect the process.

Geometry: measure trough dimensions, wall thickness, tab spacing and seating flatness against the drawing; check that the boat fits its support or contacts.

Surface and joints: inspect bends, edges and welds for cracks, burrs, thinning and residue; check containment using the agreed sample test.

Packing and records: check that boats are separated and supported against crushing, then record damage and batch identity on arrival. Set the acceptance checks in your inspection brief.

What goes wrong

A boat can match the outer dimensions yet have a thinner trough, distorted tabs or sharp bends. These defects can affect seating, electrical contact or charge containment. A chemistry report that cannot be matched to the delivered batch leaves the material identity unresolved.

Agree the drawing, inspection method and process trial before approving production. Reject unapproved changes to sheet thickness, forming or welding. Keep new replacement boats separate from discarded process boats, and resolve uncertain waste status before arranging 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.