Sourcing EDM hole drilling machines from China

Duty and classification for EDM hole drilling

Read from the UK Trade Tariff on 1 October 2026, heading 8456 covers machine tools that remove material using processes including electrodischarge. EDM hole drilling machines use an electrode and electrical discharges to produce holes in electrically conductive workpieces. The relevant lines carry 2% duty on goods from China, with no anti-dumping or countervailing measures, suspensions or attached import controls recorded in the supplied tariff facts.

Numerically controlled hole drilling machines fall within the other numerically controlled electrodischarge line, 8456 30 19 00. Machines without numerical control fall within 8456 30 90 00. The table separates buying configurations that share these codes. Confirm the control system and machining process through finding your commodity code. See the sinker EDM guide for the wider heading.

Import VAT is normally 20%. Keep the machine value, freight and insurance clear when reviewing the illustrative order; see UK import duty and VAT. Tariff classification does not replace machinery safety checks.

Specify the electrode, hole and flushing system

Specify the workpiece material, hole diameter and depth, positional tolerance, permitted taper and whether holes must break through. Agree the electrode material, tube sizes, guide arrangement, electrode rotation, usable travel and workpiece clearance. State whether positioning is manual or numerically controlled, and whether automatic electrode changes and breakthrough detection are included.

Agree the dielectric fluid, flushing pump, filtration, tank and any water treatment equipment. Record the electrical supply, controller, English interface, electrode holders, guides and consumables supplied. Ask the factory to drill your material to your drawing and retain the measured sample as the acceptance reference.

For supply in Great Britain, confirm applicable machinery safety requirements for UKCA or CE marking, a declaration of conformity and English instructions with the relevant authority. The responsible person must compile the technical file and make it available on request. Ask for documents matching the machine configuration, plus electrical schematics and operating and maintenance instructions.

Worked duty example

Illustrative example, not a quote: Illustrative order: one EDM hole drilling machine without numerical control under 8456 30 90 00, invoiced at £8,000 free on board, with £1,200 of freight and insurance to the UK. The customs value is £9,200. Duty at 2% is £184. Import VAT at 20% is charged on the customs value plus duty, £9,384, so it is £1,876.80. Import taxes total £2,060.80; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £184 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Test holes: witness drilling on your specified material and thickness. Measure entry and exit diameter, taper, position and breakthrough condition; record electrode wear and inspect the hole wall.

Flushing: run the pump, electrode rotation and filtration system through the agreed test. Check leaks, blocked guides, fluid condition and whether stable machining continues as the hole deepens.

Safety and documents: check guards, emergency stops and isolation arrangements. Match the machine identity and conformity marking to its declaration, English instructions and electrical drawings.

Arrival: inspect for corrosion, damaged guides, loose fittings and transit movement. Check electrodes, holders, filters and accessories against the packing list, then repeat the agreed test after installation. Plan these checks through quality inspection.

What goes wrong

A demonstration on thin material can hide poor flushing at depth. Worn guides or unsuitable electrodes can produce oversized, tapered or misplaced holes. Uncontrolled breakthrough can damage the exit or a surface behind it. Agree acceptance against your actual material and drawing rather than accepting a video of a different job.

Orders also go wrong when the controller differs from the quotation, electrode sizes are difficult to replenish, filtration is omitted or paperwork identifies another machine. Record the configuration, consumables and test procedure before paying the balance, and agree installation, commissioning and training in writing.

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.