Sourcing unequipped steel grain silos from China

Zero duty on unequipped grain silos

Read from the UK Trade Tariff on 1 October 2026, heading 7309 covers iron or steel containers exceeding 300 litres, without mechanical or thermal equipment. Grain silos fall within the solids-container line, 7309 00 90 00. For goods from China, the supplied data records 0% duty, no anti-dumping or countervailing duty, no suspension, no steel measure and no attached import controls on this line.

The table shows product variants sharing the same solids-container code, rather than separate tariff subdivisions. Specify the silo shell and any supplied equipment separately, and ask your broker to confirm the commodity code against the complete shipment. For another solids-storage application within the wider heading, see unequipped cement storage silos.

Confirm with your customs broker whether these heading 7309 goods fall within the iron and steel scope of the UK carbon border adjustment mechanism for imports from 1 January 2027. Ask the supplier for emissions data when planning orders for that period, and consult the UK carbon border adjustment guide.

Specify the grain, shell and discharge arrangement

State the grain type, intended food or feed use, bulk density, working capacity and filling and discharge method. Agree the steel grade, wall thickness schedule, corrosion protection, roof seals, hopper geometry, outlet position and cleaning access. Ask for drawings and a design basis covering stored-grain loads, wind, supports and foundation connections. Define which ladders, platforms, gates and assembly materials are included.

For food grain, confirm with the relevant food safety authority the applicable limits on substances transferring from contact surfaces, including requirements concerning health, food composition, taste and smell. Request evidence appropriate to the actual steel, coatings, sealants and storage conditions. A description such as 'food grade' does not identify the materials or establish their suitability.

Employers must assess and protect workplaces handling or storing substances that could cause fire or explosion under the Dangerous Substances and Explosive Atmospheres Regulations. HSE guidance calls for silo explosion relief venting to an unoccupied safe place, preferably outside. Have the site designer agree the protection arrangement before approving the shell drawings.

Worked duty example

Illustrative example, not a quote: Illustrative order: four unequipped 20,000-litre steel grain silo kits under 7309 00 90 00, invoiced at £60,000 free on board, with £8,000 of freight and insurance to the UK. The customs value is £68,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £68,000, so it is £13,600. 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

Materials: match steel certificates, measured plate thickness and coating condition to the approved specification; check grain-contact surfaces for contamination, sharp edges and coating damage.

Joints: check panel identification, hole alignment, bolt grades, seals and weld condition. For cold-formed bolted hopper bottoms, scrutinise folds and tabs for cracks.

Assembly: trial-fit representative panels, roof sections and the outlet. Match supports, anchor positions and access components to the drawings; count loose fittings against the packing list.

Arrival: inspect bundles for bent panels, wet packing and corrosion before assembly. Record damage and check that joints, roof seals and discharge gates close as specified. Arrange quality inspection around these checks.

What goes wrong

Thin panels, mismatched holes and missing bolts turn an apparently complete shipment into site rework. Damaged seals admit rain, rough internal joints retain grain, and unsuitable coatings complicate cleaning. Define acceptance criteria and packing protection before manufacture, rather than relying on catalogue photographs.

HSE has highlighted micro-cracks in cold-formed, bolted conical silo bottoms. Treat the hopper connection as a structural detail requiring review, rather than merely a sealing joint. A shell supplied without machinery still needs an agreed site protection arrangement before grain handling begins.

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.