Sourcing stone calibrating machines from China
Stone calibrating machines that grind slabs or tiles to thickness carry 2% UK duty from China, with no listed trade remedies. New machines supplied in Great Britain need CE or UKCA marking, a declaration of conformity and English instructions. Cambridge China Bridge sources stone calibrating machines.
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Duty on stone calibrating machines
Read from the UK Trade Tariff on 30 September 2026, heading 8464 covers machine tools for working stone and similar mineral materials, and for cold working glass. Stone calibrating machines whose function is grinding to thickness fit the description of other grinding or polishing machines under 8464 20 80 00. The table shows machine variants sharing this tariff line.
The supplied tariff record shows 2% duty on goods from China throughout this heading, with no anti-dumping or countervailing measures, suspensions or attached import controls. This tariff record does not replace machinery safety checks.
Give your broker the grinding method, material processed and complete machine specification to confirm the commodity code. For the wider stone finishing family, see stone slab polishing machines.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Stone slab thickness calibrating machines using grinding heads | 8464 20 80 00 | 2% | None |
Specify thickness reduction and slab handling
Specify the stone type, incoming thickness variation, required finished thickness and acceptable variation across the slab. Agree working width, material removal per pass, feed speed, grinding head arrangement, abrasive tooling and the support needed beneath the slab. Ask the factory to demonstrate the result using material representative of your production.
Agree the electrical supply, water distribution, slurry drainage, conveyor adjustment and access for changing tools. Stone grinding can release respirable crystalline silica; confirm the employer's applicable exposure-control duties with HSE. Specify water suppression and extraction connection points rather than relying on a clean-looking demonstration.
New machinery placed on the Great Britain market must have CE or UKCA marking, a declaration of conformity and English instructions. Check that the documents identify the supplied model. Confirm with HSE which technical-file, guarding and emergency-stop requirements apply to the machine.
Worked duty example
Illustrative example, not a quote: Two stone calibrating machines, illustrative order only under 8464 20 80 00, invoiced at £58,000 free on board, with £4,200 of freight and insurance to the UK. The customs value is £62,200. Duty at 2% is £1,244. Import VAT at 20% is charged on the customs value plus duty, £63,444, so it is £12,688.80. Import taxes total £13,932.80; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £1,244 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Thickness: measure the incoming and finished slab across its width and length, then compare repeat passes with the agreed acceptance criteria.
Feed and heads: check conveyor tracking, slab support, grinding head adjustment, vibration and surface marks while processing representative stone.
Safety and water: check guards, interlocks, emergency stops, earthing, water coverage and separation of wet areas from electrical equipment.
Arrival: inspect transit restraints, corrosion, conveyor damage and loose fittings before commissioning. Match the model plate, declaration and English manual. Use an agreed quality inspection brief.
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What goes wrong
An unloaded demonstration cannot show whether the machine holds thickness under grinding load. Poor conveyor support or uneven head adjustment can leave tapered slabs, ridges or chipped edges. Require a recorded trial showing incoming measurements, machine settings and finished measurements.
Water leaks, slurry build-up and unclear controller instructions can interrupt production. Agree cleaning access, replacement abrasives, conveyor parts and controller support before ordering. Check the maker's workshop and test capability through factory verification.
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.
Frequently asked questions
What is the UK import duty on stone calibrating machines from China?
The supplied tariff record shows 2% for other grinding or polishing machines under 8464 20 80 00, with no listed anti-dumping or countervailing duty.
Do stone calibrating machines need CE or UKCA marking?
New machinery placed on the Great Britain market must be CE or UKCA marked, supplied with a declaration of conformity and accompanied by English instructions.
How do I check a stone calibrating machine's accuracy?
Run representative stone under grinding load. Measure thickness across the slab before and after processing, and compare repeat passes against the agreed acceptance criteria.
What should I specify for the grinding heads?
Agree the head arrangement, adjustment method, abrasive tooling, removal per pass and replacement tool availability. Test these with your stone and required finished thickness.