Sourcing ECM equipment from China

Duty on electrochemical machining equipment

Read from the UK Trade Tariff on 1 October 2026, heading 8456 covers machine tools removing material by processes including electrochemical machining. The relevant residual line, 8456 90 00 00, carries 2% duty for goods from China. The supplied tariff facts show no anti-dumping or countervailing duty, suspension or attached import control for this line.

The table shows different electrochemical machining configurations sharing the same tariff line, rather than separate tariff subdivisions. Confirm the actual material-removal process and complete machine specification through finding your commodity code. For the wider heading and the distinct electrodischarge process, see the sinker EDM guide.

Specify the machining process and electrolyte circuit

State the workpiece alloy, drawing, surfaces to protect, required geometry and acceptance tolerances. Agree whether the machine will form contours, drill holes or remove burrs. Specify electrode tooling, fixtures, power-supply operating range, feed control and repeatability using your actual workpiece.

Define the electrolyte composition, compatible wetted materials, circulation, filtration, temperature control and collection arrangements. Confirm whether chemicals are included in the shipment. Agree the electrical supply, floor space, installation connections, English controls, maintenance access and spare electrodes, seals and filters.

For new machinery supplied in Great Britain, confirm the applicable UKCA or CE marking, declaration of conformity and English-instruction requirements with HSE. The responsible person must ensure the technical file is compiled and available on request. Arrange testing and certification support before accepting the supplier's paperwork.

Worked duty example

Illustrative example, not a quote: An electrochemical machining machine, illustrative order only under 8456 90 00 00, invoiced at £38,000 free on board, with £4,000 of freight and insurance to the UK. The customs value is £42,000. Duty at 2% is £840. Import VAT at 20% is charged on the customs value plus duty, £42,840, so it is £8,568. Import taxes total £9,408; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £840 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Trial parts: witness machining of your alloy and drawings, then check geometry, surface condition, burr removal and unintended material loss against the agreed acceptance criteria.

Electrolyte circuit: inspect tanks, hoses, seals, filtration and corrosion resistance; run the circulation system and check for leaks, unstable flow and poor temperature control.

Controls and protection: test emergency stops, enclosure interlocks and responses to interrupted flow; confirm the machine stops and restarts as agreed.

Arrival and documents: inspect transit damage, corrosion and loose connections; match the machine identity to its declaration and instructions, and repeat the agreed trial before production. See quality inspection explained.

What goes wrong

A demonstration on the supplier's easy sample may hide poor results on your alloy or geometry. Check for stray machining outside the intended area, excessive edge rounding, inconsistent hole shape and burrs that remain. Preserve accepted trial parts and the process settings used to make them.

Leaks, incompatible seals, inadequate filtration and unstable electrolyte temperature can undermine an otherwise acceptable trial. Define who supplies tooling, replaces consumables and supports commissioning. Have the quotation checked for omitted electrolyte equipment, fixtures and commissioning work.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For machinery and equipment, see machinery imports.