Sourcing smelting cathode blocks from China

Zero duty, subject to confirming classification

Read from the UK Trade Tariff on 30 September 2026, heading 8545 covers electrodes and other graphite or carbon articles of a kind used for electrical purposes, with or without metal. The supplied tariff extract does not name aluminium-smelting cathode blocks separately. The table shows block configurations against the residual electrical-article line, provisionally, rather than separate tariff categories.

Every supplied line carries 0% duty for goods from China. The extract lists no anti-dumping or countervailing duties, suspensions or attached import controls. This describes the recorded tariff measures, rather than approval of a particular shipment.

Give your broker the material specification, machining drawing, intended electrical function and details of any fitted collector bars. Confirm whether the residual line or an electrode line applies using finding your commodity code. For the wider heading, see graphite electrolysis anodes.

Block grade and collector-bar slot geometry

Specify whether the block is graphitised throughout or contains graphite within another carbon formulation. Agree bulk density, electrical resistivity, strength, ash content and thermal expansion, with test methods and acceptance criteria. Ask for results tied to the production batch rather than a generic catalogue sheet.

Issue a controlled drawing covering block dimensions, joint faces, collector-bar slots, corner details and machining tolerances. State whether bars are included and agree a trial fit against the intended bar geometry. Use factory verification to check the maker's machining and testing capability.

Importers of articles for use at work must ensure, so far as reasonably practicable, that their design and construction are safe during setting, use, cleaning and maintenance. Assess hazardous-substance risks associated with any cutting or grinding at your site.

Worked duty example

Illustrative example, not a quote: Illustrative trial batch of machined graphite cathode blocks, subject to classification under 8545 90 90 99, invoiced at £12,000 free on board, with £600 of freight and insurance to the UK. The customs value is £12,600. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £12,600, so it is £2,520. 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 batch identification and test results to the agreed grade; arrange independent checks of sample material where needed.

Geometry: measure joint faces, slot width, depth and position against the drawing; check collector-bar fit without forcing the parts.

Condition: inspect exposed faces and slot corners for cracks, chips and machining damage before shipment and again on arrival.

Packing: check supports, restraints and protection between blocks. Solid wood packaging used to import into Great Britain must meet the international phytosanitary packaging standard; specify this in the packing brief.

What goes wrong

A supplier's graphite description can conceal a different carbon formulation. Accepting catalogue properties without batch evidence leaves the buyer unable to establish what was delivered. Slot errors can also obstruct collector-bar installation, while chipped joint faces complicate fitting.

Agree the inspection record and treatment of damaged blocks before shipment. Photograph packing and exposed surfaces on arrival, retain batch identification, and keep suspect blocks separate pending assessment. See quality inspection explained.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.