Sourcing laboratory PTFE tubing from China

UK duty on laboratory PTFE tubing

Read from the UK Trade Tariff on 30 September 2026, heading 3917 covers plastic tubes, pipes, hoses and their fittings. This guide concerns laboratory PTFE tubing. Unreinforced tubing without fittings is a candidate for 3917 32 00 90; rigid, reinforced or fitted products need a different classification.

The selected lines carry 6% duty for goods from China. The supplied tariff data lists no anti-dumping or countervailing duty, suspension or attached import control for these lines. The heading's veterinary control concerns hardened-protein sausage casings, rather than these tubing lines.

Confirm the commodity code against the finished product's construction. Laboratory use alone does not establish eligibility for a specialised chromatography line. For the wider tubing family, see polyurethane pneumatic tubing.

Specify the bore, fluid path and connections

Specify PTFE resin grade, virgin or reprocessed material, inner and outer diameter tolerances, wall thickness, cut length or coil length, colour and batch identification. State whether the tube is plain, reinforced or supplied with fittings. Agree clean packaging and capped ends where the application needs them.

Give the factory the actual fluids, operating temperature, pressure and connection design. Request evidence for those conditions rather than accepting a general chemical-resistance claim. Test samples with the intended ferrules and connectors, including leakage and changes in flow after installation.

UK REACH restrictions can address chemicals in articles. Check applicable restrictions against the tubing's declared composition before supply in Great Britain. Request composition information covering pigments, fillers and processing residues; a resin name alone is an incomplete purchasing specification.

Worked duty example

Illustrative example, not a quote: Illustrative order: 20 coils of laboratory PTFE tubing; illustrative whole-pound values under 3917 32 00 90, invoiced at £1,500 free on board, with £60 of freight and insurance to the UK. The customs value is £1,560. Duty at 6% is £93.60. Import VAT at 20% is charged on the customs value plus duty, £1,653.60, so it is £330.72. Import taxes total £424.32; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £93.60 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Dimensions: measure bore, outside diameter and wall thickness against the approved drawing; inspect ovality and cut ends.

Cleanliness: inspect the bore for particles, discolouration and extrusion debris; check end protection and sealed packaging.

Connections: trial-fit the intended ferrules and connectors, then check leakage under the agreed operating conditions.

Traceability: match coil labels, resin records and test reports to the shipment batch; verify supplied lengths and packing-list quantities.

What goes wrong

A tube can match the nominal outside diameter but have an uneven wall or restricted bore. Tight coils can leave flattened sections, and rough cut ends can interfere with sealing. Inspect samples after unpacking and installation, rather than judging the coil through its bag.

Unspecified fillers, mixed batches or dirty packaging can undermine a laboratory application. Keep an approved sample and agree measurable acceptance criteria before production. Use the inspection guide to prepare the factory inspection brief.

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.