Sourcing plastic cable trunking from China
Plastic cable trunking from China carries 6% UK duty under 3925 90 20 00, with no listed trade remedy or suspension. Check the material formulation against UK REACH supplier obligations and specify lid retention, dimensions and matching fittings before ordering. Cambridge China Bridge sources plastic cable trunking.
UK duty on plastic cable trunking
Read from the UK Trade Tariff on 29 September 2026, heading 3925 covers builders' ware of plastics not elsewhere specified or included. Its electrical trunking, ducting and cable tray line is 3925 90 20 00. The table shows product variants within that same commodity line.
The supplied tariff extract records 6% duty for goods from China on this line, with no anti-dumping or countervailing measure, suspension or attached import control. This describes the trunking line rather than every product within the heading.
Confirm the commodity code against the actual product and its use, particularly for separately supplied fittings. For other builders' ware within this heading, see plastic building access panels. For balustrade purchases, see plastic balustrade sourcing.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Plastic mini trunking for electrical circuits | 3925 90 20 00 | 6% | None |
Specify the trunking as a complete system
Specify the plastic formulation, permitted recycled content, colour, cross-section, usable internal space, wall thickness, straightness and lid design. State whether the trunking is screwed down or adhesive-backed, and describe the installation surface. Include dividers, bends, couplers, end caps and any socket interfaces in the approved sample set.
Ask for test reports supporting claimed impact resistance, temperature performance and flame behaviour, matched to the supplied formulation and profile. Check the formulation against the UK REACH Candidate List: inclusion of a substance brings supplier obligations. Use testing and certification to scope the evidence needed for your application.
Worked duty example
Illustrative example, not a quote: Illustrative mixed order of plastic cable trunking lengths and matching lids under 3925 90 20 00, invoiced at £18,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £19,500. Duty at 6% is £1,170. Import VAT at 20% is charged on the customs value plus duty, £20,670, so it is £4,134. Import taxes total £5,304; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £1,170 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Profile: check internal dimensions, wall thickness, straightness and cut ends against the approved drawing.
Lid fit: check that lids engage along the full length, remain seated during handling and can be removed as intended.
Accessories: assemble bends, couplers, dividers and end caps with production trunking, checking alignment and exposed edges.
Material and packing: check colour consistency, cracking during cutting, batch identification and protection against crushing. See quality inspection.
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What goes wrong
A lid that fits a sample may become loose or difficult to close when the extrusion profile changes. Thin walls, brittle material, bowed lengths and poorly matched fittings can make installation difficult. Adhesive-backed trunking also needs a trial on the intended surface.
Approve assembled production samples and record the material formulation before shipment. Keep damaged packs separate on arrival and compare their contents with undamaged packs before accepting the batch.
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.
Frequently asked questions
What is the UK import duty on plastic cable trunking from China?
The supplied tariff extract records 6% under 3925 90 20 00, with no listed anti-dumping or countervailing measure or suspension.
Are mini trunking and wiring duct under the same code?
The tariff line covers trunking, ducting and cable trays for electrical circuits. Confirm the actual product against that description before declaring it.
What should I ask the Chinese factory to supply?
Ask for drawings, the material formulation, assembled samples with matching fittings, and reports supporting the performance claims you intend to use.
How do I check that trunking lids fit?
Fit production lids to production bases along their full length. Check closure, retention, removal and alignment at couplers and bends against the approved sample.