Sourcing vulcanised fibre base paper from China

Duty on uncoated base paper

Heading 4805 covers other uncoated paper and paperboard in rolls or sheets, within the heading's limits on further working or processing. This guide concerns the base paper bought for conversion into vulcanised fibre. Ask your broker to assess already converted fibre separately. For the wider heading, see our electrical insulation pressboard guide.

Read from the UK Trade Tariff on 1 October 2026, the selected lines carry 0% duty for goods from China. The supplied tariff record lists no anti-dumping or countervailing duties, suspensions or attached import controls. These general paper lines are classification candidates, not dedicated vulcanised fibre base-paper codes. The recovered-paper line is relevant only where that composition matches the order.

Confirm the commodity code using the pulp composition, grammage, roll or sheet format and processing history. Distinguish paper weighing 150 g/m² or less, more than 150 but less than 225 g/m², and 225 g/m² or more. Do not select a code from the supplier's product name alone.

Specify paper for your fibre conversion process

Describe the purchase as uncoated base paper for vulcanised fibre manufacture. Specify cotton or wood-pulp composition, permitted recycled content, grammage and caliper tolerances, moisture, ash content, absorption behaviour and tensile strength along and across the machine direction. State whether sizing, fillers or other additives are acceptable. Agree reel width, diameter, core dimensions, winding direction and splice marking.

Approve the grade through a trial in your own conversion process. Compare liquid uptake, wet handling, bonding between layers and the finished material against an approved sample. For virgin wood-derived pulp, confirm with the relevant authority whether the paper is in scope and what timber due diligence is required when first placing it on the Great Britain market. Obtain pulp-source, species and harvest-country information; distinguish wood pulp from cotton and recovered material, and confirm whether any exemption applies.

Worked duty example

Illustrative example, not a quote: Illustrative order: 12 tonnes of uncoated vulcanised fibre base paper in reels under 4805 92 00 00, invoiced at £14,000 free on board, with £1,800 of freight and insurance to the UK. The customs value is £15,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £15,800, so it is £3,160. 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

Paper properties: check conditioned samples for grammage, caliper, moisture, absorption and tensile results against the agreed specification.

Conversion trial: check uptake across the sheet, wet handling and layer bonding using the buyer's agreed process and acceptance sample.

Reels and sheets: check dimensions, winding, marked splices, crushed cores, torn edges, creases and visible contamination.

Packing and records: check moisture protection, reel-end protection, batch identification and fibre-source documents. Use the quality inspection guide to agree the inspection scope.

What goes wrong

A sample can convert well while the delivered batch differs in pulp blend, sizing or moisture. Watch for uneven uptake, weak wet handling and poor bonding in the conversion trial. Grammage or caliper variation can also leave the finished material uneven. Make the approved formulation and trial acceptance criteria part of the purchase specification.

Damaged reel edges, crushed cores and unmarked splices can interrupt feeding. Damp packing can leave sheets curled or stained. Inspect on arrival before mixing batches, retain identified samples and compare failures with the approved paper and batch records.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.