Sourcing construction materials from China

A category where the paperwork is the product

Construction products are bought on performance, and performance has to be declared rather than described. For products covered by a designated standard, that means a conformity assessment, a declaration of performance setting out the essential characteristics, and the correct marking before the product can be placed on the market.

Those essential characteristics are the things a specifier actually relies on: behaviour in fire, mechanical resistance, durability. A supplier who can describe a product beautifully but cannot produce a declaration of performance has not given you something you can sell into a UK project.

As importer, your duty includes assuring that the marking and the declaration of performance have been correctly applied. That is an active check, not an assumption.

Marking and assessment bodies

For construction products you can use either the UKCA marking or the CE marking on the GB market, and CE is accepted with no end date. Construction products are a notable exception to the general picture on marking in a different respect: designated standards operate on a mandatory basis rather than as one route among several.

Whether an outside body has to be involved at all depends on the assessment and verification system the standard sets for that product, so some products are assessed by the manufacturer alone. Where a third party is required, the route decides who it must be: UKCA marking requires a UK approved body, while CE marking requires an EU notified body. Both work for GB, so a supplier holding valid EU notified body certification is not a problem, and a supplier holding certification from a body that is neither is.

So ask early which designated standard covers your product, what assessment system it sets, which body did the work, and whether that body is a UK approved body or an EU notified body. Ask for the declaration of performance itself rather than a summary. The certification that genuinely does not carry is certification from a Chinese or other third-country body with no standing under either route.

Where projects actually go wrong

Substitution. A product supplied to a project has to be the product that was specified and declared, and a change of composition, thickness, coating or component is a change to the declared performance. In a construction context that is not a quality dispute, it is a specification failure with consequences that outlast the order.

Batch variation. Building materials are made in large runs from variable inputs, so define the acceptable variation explicitly and require batch records and traceability. If something has to be investigated later, being able to identify which batch went where is what limits the scope.

And documentation arriving late. On a construction project the paperwork is often needed before the material is installed, sometimes before it is accepted on site. Getting the declaration and supporting evidence at the point of order rather than at the point of delivery avoids a stalled site.

Specifying to avoid disputes

State the performance requirement and the standard it is measured against, not just the physical description. Dimensions and tolerances, material composition and grade, coating type and thickness, finish, and the declared characteristics that matter for the application.

Require the test evidence to cover your exact configuration, and remember that compliance follows configuration: a change of core material or coating can leave a genuine report describing a different product.

Specify packaging for the reality of a building site as well as for the journey, including protection against moisture and handling damage, and marking that survives outdoor storage.

Commercial realities of the category

Volumes are large and value density is often low, so freight and handling are a big share of landed cost. Get all-in quotes to the delivery point and check what is excluded, particularly unloading, which needs equipment on site.

Check the commodity code before ordering. Some construction-related goods of Chinese origin carry anti-dumping duty on top of normal duty, and in a low-margin, high-volume category that can remove the entire commercial case.

Lead times are long and site programmes are unforgiving, so plan against the whole chain rather than the sailing time, and build in the Chinese New Year shutdown explicitly.

A practical order of work

Establish which designated standard applies, what has to be declared, and what assessment system it sets. Confirm the route and that the body is a UK approved body or an EU notified body as appropriate. Get the declaration of performance and supporting evidence before ordering, in the right name and covering the right configuration.

Then specify tightly, require batch traceability, inspect before shipment, and keep the documentation with the project record. In this category the file is what makes the material usable, and it is worth treating with the same seriousness as the product itself.