Sourcing graphite electrode nipples from China

0% duty on graphite electrode nipples

Heading 8545 covers graphite and other carbon articles used for electrical purposes. This guide concerns the threaded nipples joining graphite furnace electrodes. The table includes the named nipple lines, the residual line for other carbon electrical articles and a matching electrode-body line. For the wider product family, see graphite electrodes and carbon brushes.

Read from the UK Trade Tariff on 30 September 2026, all the selected lines carried 0% duty for goods from China. The supplied snapshot lists no anti-dumping or countervailing measures, suspensions or attached import controls on these lines. Import VAT is normally 20%; see UK import duty and VAT.

The named nipple lines distinguish density and electrical resistance. Obtain the factory's batch results and intended electrical use before choosing between them or the residual line. Your import declaration must include the commodity code. Confirm it using finding your commodity code, rather than copying the code for the electrode body.

Specify the nipple and its mating socket

Send the factory the electrode socket drawing and an approved mating sample. Specify nipple grade, diameter, length, thread pitch, thread form, machining tolerances and the required fit. A matching grade name alone does not establish that a replacement nipple fits the installed electrodes.

Agree limits for bulk density, electrical resistivity, flexural strength, thermal expansion and ash content. Ask for results traceable to the production lot and agree how sample testing will be performed. Use factory verification to check the maker's machining and testing capability.

Worked duty example

Illustrative example, not a quote: Illustrative replacement-stock order: 40 graphite electrode nipples; values are illustrative under 8545 90 90 10, invoiced at £4,500 free on board, with £600 of freight and insurance to the UK. The customs value is £5,100. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £5,100, so it is £1,020. 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

Properties: compare the lot certificate with the purchase specification and arrange independent sample testing for density, resistivity and flexural strength.

Threads: gauge the machined threads and test-fit sampled nipples into representative electrode sockets. Check for chipped thread crests, cracks and damaged ends.

Traceability: match carton labels, lot references and test certificates; check the quantities and sizes received against the packing list.

Packing: inspect arrival damage, thread protection, moisture and movement inside cases. Solid wood packaging used for imports into Great Britain must meet the international phytosanitary wood-packaging standard. Include this requirement in the packing brief.

What goes wrong

A nipple can look correct but have the wrong thread or material properties. Poor fit, damaged threads or weak material can lead to loose joints or breakage in the furnace. Keep an approved mating sample and reject departures from the agreed drawing rather than accepting a supplier's claim that the size is equivalent.

Mixed lots make failures difficult to trace, while unprotected threads can arrive chipped despite intact outer cases. Record inspection results against each lot and photograph damage before unpacking further. Agree checks through quality inspection.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.