Sourcing copper waveguide tubes from China

4% duty on copper waveguide tube stock

Heading 7411 covers copper tubes and pipes. This guide concerns rectangular tube stock for waveguide manufacture. Straight refined copper stock is the starting point for checking code 7411 10 10 00. The other table rows are material alternatives only where the drawing specifies those alloys. For the wider family, see copper tubes and pipes.

Read from the UK Trade Tariff on 1 October 2026, all supplied heading 7411 lines carried 4% duty for goods from China. The supplied extract lists no anti-dumping or countervailing measures, suspensions or attached import controls. These findings concern the listed tube lines; confirm the classification separately for flanged, machined or assembled waveguide products.

Include the commodity code on the import declaration. Give your customs broker the material certificate, cross-section drawing and details of any machining or attached parts, then confirm the commodity code. The hypothetical order values are illustrative, not a quotation; see import duty and VAT for the calculation method.

Specify the rectangular bore

Order against a controlled drawing showing internal width and height, internal corner radii, wall thickness, cut length, straightness and twist tolerances. State copper grade, temper, seamless or welded construction, and any permitted internal seam. Specify the bore finish separately from the outside finish, including acceptable scratches, burrs and cleaning residues.

Agree whether stock arrives bare or plated, how ends are protected, and how material batches remain identifiable after cutting. UK REACH generally applies to substances in articles. Ask for alloy and coating composition so you can assess the relevant chemical obligations before supply in Great Britain. Approve a sample cross-section and a trial length before releasing the production order.

Worked duty example

Illustrative example, not a quote: 20 straight lengths of rectangular refined copper waveguide tube stock, illustrative only under 7411 10 10 00, invoiced at £4,000 free on board, with £800 of freight and insurance to the UK. The customs value is £4,800. Duty at 4% is £192. Import VAT at 20% is charged on the customs value plus duty, £4,992, so it is £998.40. Import taxes total £1,190.40; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £192 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Bore: check internal width, height and corner radii against the drawing at accessible ends; use agreed gauges and inspect sample cross-sections.

Geometry: check wall thickness, cut length, straightness, twist and end squareness against the agreed inspection method.

Material and surface: match batch certificates to the stock; inspect the bore for seam projections, scoring, burrs, oxidation and cleaning residue.

Packing: check end protection, separation between lengths and supports against bending or crushing; record arrival damage before unpacking. Use the quality inspection guide to brief the inspector.

What goes wrong

A supplier may match the outside rectangle while the internal aperture or corner radii differ from the drawing. Twist, bowed lengths, uneven walls or a projecting weld seam can leave stock unsuitable for the intended assembly. An acceptable outside surface can also hide bore scoring or residue.

Resolve the drawing and measurement method before manufacture. Inspect sample cut sections and trial the stock in your intended fabrication process. Keep damaged or out-of-tolerance lengths separate, with photographs and batch identification, before discussing replacement or rework.

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.