Sourcing paper machine headboxes from China
Paper machine headboxes imported from China as paper-machine parts carry 0% UK duty, with no anti-dumping or countervailing duty listed. Confirm whether the supplied assembly is a replacement part or partly completed machinery, because the required paperwork differs. Cambridge China Bridge sources paper machine headboxes.
0% duty on paper-machine parts
Read from the UK Trade Tariff on 3 October 2026, heading 8439 covers machinery for making pulp or making or finishing paper and paperboard, and its parts. The other-parts line, 8439 99 00 90, carries 0% duty for goods from China. The supplied facts list no anti-dumping or countervailing duty, suspension or import control on this line.
The table shows alternative headbox assemblies under the same parts line, rather than separate tariff classifications. Confirm that each shipment qualifies as a paper-machine part using its drawings, function and supply scope. Ask your broker to confirm the commodity code, particularly when ordering a headbox with forming equipment or separately supplied controls.
The worked order is illustrative, rather than a supplier quotation. Its FOB value and freight are assumptions for a replacement purchase. See import duty and VAT for the calculation, and our paper machine dryer cylinders guide for another product family within this heading.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Replacement headbox supplied as a paper-machine part | 8439 99 00 90 | 0% | None |
Specify the headbox and its machine interfaces
Specify whether the headbox is hydraulic, air-cushion or open, together with paper grade, furnish, stock consistency, operating speed and forming width. Agree the stock-flow and pressure ranges, slice opening, lip adjustment, edge-flow arrangement and any dilution controls. Supply drawings of the existing supports, stock inlet and forming section.
Name the wetted materials, surface finish, cleaning access, seals and replacement lip components. Agree how the factory will demonstrate flow distribution and leakage before dispatch, then how the mill will assess sheet formation and the cross-machine basis-weight profile after installation.
Agree whether the delivery is a replacement component, complete machinery or partly completed machinery. Confirm with the relevant authority the machinery safety requirements, conformity documentation, marking and English instructions applicable to complete machinery. For partly completed machinery, assembly instructions and a declaration of incorporation must accompany it until incorporation. Confirm with the relevant authority the conformity assessment scope for an assembled paper line.
Worked duty example
Illustrative example, not a quote: Illustrative order: one replacement headbox for a small paper mill under 8439 99 00 90, 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
Geometry: check mounting datums, inlet position, slice-lip straightness and adjustment travel against the approved drawings before shipment and again on arrival.
Wetted surfaces: check material records, weld finish, internal cleanliness and access for cleaning; inspect lips and seals for scratches or transport damage.
Flow and leakage: witness the agreed water test, record test conditions and check distribution, joints and seals. Keep mill performance acceptance separate from the workshop water test.
Interfaces and documents: check supports, connection drawings, control interfaces, spares and applicable conformity or incorporation paperwork. Record crate damage and missing components on arrival.
Working out your own order? Send us the product on WhatsApp and we reply the same working day: WhatsApp us
What goes wrong
A headbox can fit the nominal machine width yet miss the mounting datums or deliver an uneven jet. Damaged lips, rough internal welds, deposits and unsuitable seals can cause streaks, leakage or cleaning problems. A water test alone does not establish performance with the mill's actual furnish.
Approve interface drawings before manufacture and agree responsibility for installation, controls and final acceptance. Record checks through quality inspection, and use factory verification to assess the maker's machining, welding and test facilities.
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 paper machine headboxes from China?
The supplied tariff facts show 0% duty under 8439 99 00 90 for qualifying paper-machine parts, with no anti-dumping or countervailing duty listed.
Does an imported headbox need a declaration of incorporation?
If supplied as partly completed machinery, it must come with assembly instructions and a declaration of incorporation. Agree its status before ordering; a replacement component needs a separate assessment.
What drawings should I send the headbox factory?
Send mounting datums, forming width, inlet position, support details and forming-section interfaces, together with operating conditions and the required slice-adjustment arrangement.
Can a factory water test prove headbox performance?
It can check agreed flow distribution and leakage under recorded conditions. Agree separate mill acceptance using the intended furnish, operating speed, sheet formation and basis-weight profile.