Sourcing graphite heaters from China

Duty on graphite resistance heating elements

Heading 8545 covers graphite and other carbon articles used for electrical purposes. Its heating-resistor line is 8545 90 10 00. This guide concerns elements that generate heat by electrical resistance, rather than furnace electrodes. The other table rows are classification comparisons, not alternative codes for the same heater.

Read from the UK Trade Tariff on 30 September 2026, heating resistors from China carried 0% duty. The supplied tariff record lists no anti-dumping or countervailing measure, suspension or attached import control for this line. Import VAT is separate from customs duty.

Confirm the commodity code using the drawing, material and electrical function. For the wider heading, see graphite electrodes and carbon brushes.

Specify the graphite and furnace conditions

Give the factory the furnace drawing and element geometry, including slots, holes, contact faces and mounting clearances. Specify graphite grade, density, electrical resistivity, strength, ash content and machining tolerances. State the operating atmosphere, intended temperature range, supply conditions and heating cycle.

Agree the resistance measurement temperature, contact arrangement and acceptance criteria. Ask for material test results linked to the production lot and a trial element fitted to the intended furnace before approving bulk production.

Government guidance says separately supplied components can themselves constitute fully manufactured products. Assess the compliance position for the actual element or assembly supplied before sale in Great Britain; avoid treating the word component as an automatic exemption. Use testing and certification to scope the assessment.

Worked duty example

Illustrative example, not a quote: Illustrative order: 40 machined graphite resistance heating elements under 8545 90 10 00, 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 the lot certificate to the agreed graphite grade, density, resistivity and ash specification.

Machining: measure slots, holes and contact faces against the drawing; inspect thin sections and corners for cracks or chips.

Resistance: measure using the agreed temperature and contact method, and compare results across the shipment.

Packing: check individual support, cushioning and protection of fragile sections; repeat the visual and dimensional checks on arrival. See quality inspection.

What goes wrong

An element can fit the furnace yet have the wrong resistance or graphite grade. Uneven section thickness and poor contact faces can produce uneven heating. Thin machined sections can arrive chipped or cracked, while an unsuitable furnace atmosphere can shorten element life.

Approve the drawing, material and measurement method together. Ask the factory to explain any proposed substitution before production, and keep damaged arrival samples and their packaging for investigation.

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.