Sourcing lapping machines from China

Lapping machine duty and classification

Read from the UK Trade Tariff on 25 October 2026, heading 8460 covers machines finishing metal or cermets with abrasives or polishing products, including lapping machines. This guide concerns metal and cermet workpieces. See the wider grinding machines guide.

The honing or lapping lines carry 0% duty for goods from China: 8460 40 10 00 for numerically controlled machines and 8460 40 90 00 for other machines. The supplied tariff data lists no anti-dumping or countervailing duty, suspensions or attached import controls. The table shows machine configurations sharing these codes, rather than separate tariff lines.

Confirm the commodity code using the workpiece material, finishing process and control specification. A programmable timer alone should prompt a classification check rather than an assumption that the machine is numerically controlled.

Specify the plates, slurry and acceptance part

Specify single-sided or double-sided processing, workpiece material and dimensions, plate material and diameter, carrier design, loading method, speed adjustment, pressure control and plate conditioning. Define the abrasive, slurry delivery, filtration and cleaning arrangements, including how abrasive contamination will be prevented.

Agree flatness, parallelism, thickness variation and surface finish against your own representative parts. Record the measuring method and acceptance conditions, including whether results are measured after cleaning. Ask the factory to demonstrate the agreed process with the supplied plates, carriers and slurry system.

For Great Britain, machinery must satisfy essential health and safety requirements. Confirm the applicable conformity assessment, marking, declaration of conformity and English instruction requirements with the relevant authority. Request the documents for the actual model before shipment.

Worked duty example

Illustrative example, not a quote: 5 numerically controlled lapping machines, illustrative order under 8460 40 10 00, invoiced at £110,000 free on board, with £7,000 of freight and insurance to the UK. The customs value is £117,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £117,000, so it is £23,400. 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

Plates and carriers: inspect plate condition, carrier fit, workpiece retention and access for conditioning; compare the supplied components with the agreed specification.

Process results: lap the agreed parts and record flatness, parallelism, thickness variation and surface finish after cleaning; retain identified samples and measurement records.

Controls and safety: demonstrate speed and pressure adjustment, emergency stops, guards and fitted interlocks; match the machine identity to its declaration and English instructions.

Arrival condition: inspect for corrosion, slurry leaks and transport damage; repeat the agreed acceptance run after installation. Use the quality inspection guide to organise the checks.

What goes wrong

A smooth-looking part can still fail flatness or parallelism. Uneven plate wear, unsuitable carriers, inconsistent loading and contaminated slurry can produce taper, scratches or variable thickness. A demonstration on the supplier's easiest part does not establish performance on your material.

Missing carriers, undocumented slurry settings and damage to plate surfaces can make the delivered machine difficult to commission. Put the demonstrated process, included tooling, packing arrangements and arrival acceptance method into the purchase specification.

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.