Sector guides

Sourcing steel mezzanines from China

Steel mezzanine floor structures from China normally fall under heading 7308, with UK duty of 0% across the relevant lines. Confirm the applicable construction-product documentation and CE or UKCA marking requirements for the structural components with the relevant authority before supplying them in Great Britain. Cambridge China Bridge sources steel mezzanine floor structures.

Written by Bono Xu, Founder, Cambridge China Bridge · 4 min read · Updated 2026-10-10

Illustrative image of steel mezzanines on a workshop surface.
Illustrative image

UK duty on steel mezzanine structures

Heading 7308 covers iron or steel structures and their parts, including sections prepared for structural use. Fabricated mezzanine frames normally use 7308 90 98 90. Separately supplied parts principally of sheet may use 7308 90 59 90. The component rows share codes where appropriate; they are classification candidates, subject to the actual goods supplied.

Read from the UK Trade Tariff on 30 September 2026, the relevant lines carried 0% duty for goods from China. The supplied tariff data lists no anti-dumping or countervailing duty, steel measure, suspension or attached import control for these codes. Heading 7308 is included in the UK carbon border adjustment mechanism from 1 January 2027, as explained in the published wider guide.

Confirm the commodity code against the drawings, materials and shipment contents before ordering. Keep separately supplied decking and accessories identifiable on the invoice. See steel structures and fabrications for the wider heading. For outdoor steel structures, see our steel cycle shelter sourcing guide.

UK duty on these lines for goods of Chinese origin (one code per row), read from the UK Trade Tariff on 30 September 2026.
GoodsCommodity codeDutyAnti-dumping or countervailing duty on China
Fabricated mezzanine frames, beams and columns7308 90 98 900%None
Other structural parts principally of sheet, such as prepared steel decking7308 90 59 900%None

Specify the loads, layout and connections

Give the fabricator a site survey and an engineer-reviewed layout. Define the intended use, distributed and concentrated loads, column positions, clear height, beam spans, stair openings and guardrail arrangement. Ask the engineer to review the existing slab, base plates and proposed anchors. Agree who designs the frame and its connection to the building.

Confirm with the relevant authority the requirements for certified factory production control, a stated execution class, a declaration of performance and CE or UKCA marking for the structural steel building components. CE marking remains accepted for construction products in Great Britain. Match the documents to the supplying factory and components. Specify steel grade, welding, hole tolerances, decking fixings, coating and the member identification system.

For an installation in England or Wales, check whether building regulations approval is needed before altering the building. Agree the fire protection, escape route and access arrangements with the project designer before fabrication.

Worked duty example

Illustrative example, not a quote: A fabricated steel mezzanine frame package, illustrative only under 7308 90 98 90, invoiced at £60,000 free on board, with £6,000 of freight and insurance to the UK. The customs value is £66,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £66,000, so it is £13,200. 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

Documents: match mill certificates, factory production control certification and the declaration of performance to the order, drawings and member markings.

Connections: measure member lengths, base plates and hole positions against the approved drawings. Trial-fit beam-to-column joints and stair connections before shipment.

Welds and coating: check weld size and appearance, specified non-destructive testing records and coating thickness. Inspect coated surfaces for transport damage on arrival.

Completeness: reconcile beams, columns, bracing, decking, stairs, guardrails and fixings against the packing list. Check member labels and record missing or damaged parts before erection. Plan the stages with the inspection guide.

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What goes wrong

A factory's standard mezzanine layout may miss the buyer's concentrated loads, slab condition or stair position. Freeze the engineer-reviewed drawings before production and record agreed changes. A marking label alone does not resolve whether the proposed frame suits the site.

Misplaced holes, mixed member labels and missing bracing can stop erection. Coating damage may be hidden inside bundles. Inspect connections before dispatch and unpack against the erection drawings on arrival; refer proposed drilling, welding or member substitutions back to the designer.

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.

Frequently asked questions

What is the UK import duty on steel mezzanines from China?

The relevant heading 7308 lines carry 0% in the supplied tariff snapshot, with no listed anti-dumping or countervailing duty or steel measure.

What commodity code covers a steel mezzanine floor?

A fabricated steel mezzanine frame normally uses 7308 90 98 90. Separately supplied sheet-based structural parts may use 7308 90 59 90. Confirm the classification against the actual shipment.

What documents should I ask the Chinese fabricator for?

Ask for the declaration of performance, factory production control certificate, stated execution class, mill certificates, welding documents and approved fabrication drawings.

Does an imported mezzanine need building regulations approval?

In England and Wales, check whether approval is needed before altering the building. Ask a building control body if unsure. Settle the site design and approval position before fabrication.

Sources

  1. UK Trade Tariff — commodity codes and duty
  2. UK Trade Tariff: heading 7308
  3. Construction Products Regulation in Great Britain
  4. Building regulations approval

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