Sourcing gas rotary-hearth furnaces from China

0% duty, with classification by process

Read from the UK Trade Tariff on 2 October 2026, heading 8417 covers non-electric industrial or laboratory furnaces and ovens, including incinerators. Gas-fired rotary-hearth furnaces heat material carried through the furnace on a rotating hearth. The process and material determine which furnace line to consider.

The relevant lines for goods from China carry 0% duty. The supplied tariff record lists no anti-dumping or countervailing duty, suspensions, steel measure or attached import controls. Metal and ore heat-treatment furnaces fall within 8417 10 00 00; ceramic firing furnaces have a separate line. The table includes alternative applications and parts, rather than interchangeable codes for the same furnace.

Confirm the commodity code using the intended process, material and scope of supply, including whether the shipment contains a complete furnace or separately supplied parts. For the wider product family, see gas-fired heat-treatment furnaces.

Specify the rotating hearth and heating process

Specify the material, charge shape, working temperature, heating cycle, atmosphere and required temperature uniformity. Define the usable hearth area, load distribution, rotation speed range, residence time and loading and discharge arrangement. Agree a loaded trial using representative material, with a written method for measuring temperature and recording the processed output.

Identify the hearth drive, support rollers, bearings, seals and lubrication access. Specify refractory construction, expansion joints, burner arrangement, gas type and supply pressure, exhaust connection, controls and data logging. Agree transport sections, reassembly drawings, commissioning responsibilities and spare parts before ordering.

Confirm with the relevant authority whether furnaces supplied in Great Britain fall under the Supply of Machinery (Safety) Regulations 2008 and what conformity marking, declaration of conformity and English instructions are required. Compliant machinery may use CE or UKCA marking. Ask the relevant environmental authority whether the proposed installation needs a permit for site emissions and who should arrange it before committing to the emissions specification.

Worked duty example

Illustrative example, not a quote: One gas-fired rotary-hearth furnace for metal heat treatment; illustrative values under 8417 10 00 00, invoiced at £72,000 free on board, with £6,500 of freight and insurance to the UK. The customs value is £78,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £78,500, so it is £15,700. 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

Hearth movement: observe rotation under the agreed load, checking alignment, roller contact, drive behaviour and clearance at stationary seals. On arrival, check transport damage, displaced supports and the reassembly reference marks.

Combustion controls: have competent personnel demonstrate flame supervision, purge, safety shut-off and emergency-stop functions against the agreed test procedure. Record the response to simulated faults.

Heat and refractory: record loaded temperature uniformity and residence time. Compare lining materials and thicknesses with the drawings; inspect joints, cracks, loose sections and the hearth perimeter seals.

Documents and identity: match the nameplate, declaration of conformity and English instructions to the supplied furnace. Check gas train and wiring diagrams, drive details, spares lists and commissioning records. Agree the scope through quality inspection.

What goes wrong

An empty-furnace temperature demonstration can hide uneven heating under load. Poor load distribution or inconsistent hearth movement changes residence time and can leave material underheated or overheated. Agree acceptance against representative output as well as the controller display.

Misaligned supports, damaged perimeter seals and poorly fitted refractory can cause rubbing, heat loss and early repairs. A factory trial cannot establish alignment after transport and reassembly. Record the shipment condition, repeat the movement checks on site and plan commissioning with a UK engineer.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For machinery and equipment, see machinery imports.