Sourcing rolling mill roll chocks from China
Rolling mill roll chocks from China provisionally fall under other mill parts, carrying 0% UK duty with no listed trade remedies. Workplace supply duties include safe-use information and necessary testing or examination. Specify bearing fits and mill interfaces. Cambridge China Bridge sources rolling mill roll chocks.
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Zero duty under the rolling-mill parts line
Heading 8455 covers metal-rolling mills and their rolls. For roll chocks designed as mill parts, the relevant candidate is 8455 90 00 00, “Other parts”. The table repeats that tariff line for different chock applications; these are buying descriptions, not separate tariff subdivisions.
Read from the UK Trade Tariff on 3 October 2026, the other-parts line carried 0% duty for goods from China. The supplied tariff data lists no anti-dumping or countervailing duty, suspension, steel measure or attached import control for this line.
Confirm the commodity code using the drawing, function and supplied assembly details, particularly where bearings or additional equipment are included. For wider heading coverage, see rolling mill guide assemblies.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Hot-rolling work-roll chocks | 8455 90 00 00 | 0% | None |
Specify the bearing seat and mill interfaces
Identify the mill stand, work-roll or back-up-roll position, drive side or operator side, and whether the order includes bearings, liners, covers and seals. Supply an approved drawing with bearing-bore dimensions, fit tolerances, locating shoulders, liner faces, cover bolt holes and lubrication connections. Specify the material grade, heat treatment, hardness locations and acceptance criteria for internal and surface defects.
Ask for installation, lubrication and handling information alongside the inspection records. Check which conformity-marking rules apply to the actual supply: government guidance says that, for many products, a single marking covering the overall product is sufficient.
Worked duty example
Illustrative example, not a quote: Illustrative order: 12 replacement work-roll chocks; illustrative FOB value and freight under 8455 90 00 00, invoiced at £28,000 free on board, with £4,000 of freight and insurance to the UK. The customs value is £32,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £32,000, so it is £6,400. 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
Identity and material: match each chock identifier to the approved drawing, material certificate, heat-treatment record and agreed defect-testing report.
Bearing geometry: measure the bore, roundness, shoulder position and alignment against the drawing; check mating covers and bearing retention features.
Mill interfaces: check liner seating faces, locating features and bolt-hole positions; trial-fit mating parts where available.
Lubrication and arrival condition: check passages are clear and connections match; inspect seals, protected machined faces, corrosion and transit damage. Plan these checks through quality inspection.
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What goes wrong
A bearing bore can meet its nominal diameter yet have poor roundness or misaligned shoulders, causing uneven bearing loading. Incorrect liner thickness or locating faces can prevent the chock seating in the stand. Blocked lubrication passages, mismatched seals and casting defects can lead to leakage, overheating or cracking.
Copying a worn chock can reproduce wear as a manufacturing dimension. Use the approved design drawing and measured mating interfaces, and agree how any differences will be resolved before machining. Protect bores and locating faces during shipment, then check them again on arrival before installation.
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 rolling mill roll chocks from China?
The supplied tariff data, read on 3 October 2026, gives 0% for 8455 90 00 00, other rolling-mill parts, with no listed anti-dumping or countervailing duty. Confirm the classification of the supplied item.
Does every roll chock need CE or UKCA marking?
Check the marking rules for the actual supplied component or assembly. Government guidance says that, for many products, a single marking covering the overall product is sufficient.
What drawings should I send a roll-chock factory?
Send the approved chock drawing, bearing details and mill interfaces. Include bore fits, shoulders, locating faces, liners, covers, seals and lubrication connections, with agreed inspection criteria.
Can a Chinese factory copy my old roll chock?
Use the old chock as a reference alongside the approved drawing and mating-part measurements. Worn bearing bores and liner faces can otherwise become incorrect dimensions in the replacement.