Sourcing brass push-fit fittings from China

Duty on brass push-fit plumbing fittings

Heading 7412 covers copper tube or pipe fittings. Brass push-fit plumbing fittings fall within the copper-alloy line, 7412 20 00 00. The shapes below share that commodity line; they are purchasing descriptions, not separate tariff subdivisions.

Read from the UK Trade Tariff on 30 September 2026, the copper-alloy line carries 0% duty for goods from China. The supplied tariff facts list no anti-dumping or countervailing duty, suspension or attached import control.

Confirm the material and function against the commodity code guide. For the wider heading and another joining method, see brass compression fittings.

Specify the tube, seal and retention system

State the intended water or heating application, tube material, outside diameter and tolerances, fitting shape, insertion depth, working pressure and temperature. Specify the brass alloy, agreed lead limit and dezincification resistance where needed. Identify seal material, retaining ring design, any tube support insert and whether the joint is demountable.

For water fittings in England and Wales, ask the local water company to confirm the applicable quality, standard and suitability requirements for the circumstances of use. Agree the named standard and product-specific evidence before ordering. Match evidence to the complete fitting range, including seals and size variants.

Water undertakers enforce the water fittings regulations. Ask the local water company about compliance questions. Arrange testing and certification checks around the actual fitting and intended tube.

Worked duty example

Illustrative example, not a quote: Illustrative trial consignment of assorted brass push-fit couplings, elbows and tees under 7412 20 00 00, invoiced at £4,000 free on board, with £2,600 of freight and insurance to the UK. The customs value is £6,600. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £6,600, so it is £1,320. 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

Material: match batch material reports to the ordered brass alloy; check lead content and dezincification resistance where specified.

Assembly: inspect seals for cuts or twisting, retaining rings for damage, and bores for burrs. Confirm support inserts and release components against the approved sample.

Joint performance: assemble samples with the intended tube at the specified insertion depth; check leakage and pull-out resistance against the agreed test plan.

Traceability and packing: match fitting markings, size labels and batch records; check protected openings and separated sizes during inspection.

What goes wrong

A fitting can look correct yet leak because the seal is damaged, the tube is incompatible or the insertion depth is wrong. A weak or incorrectly seated retaining ring can allow the tube to move. Test complete joints with the intended tube rather than judging loose fittings by appearance.

Unagreed substitutions of brass alloy, seals or retaining components undermine the approved sample. Record those components in the purchase specification and compare production samples and batch records before shipment.

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.