Custom Precast Concrete Moulds

Not every project uses catalogue sizes

Local standards, authority drawings, architect specifications, contractor-specific dimensions and branded logos often mean a standard catalogue mould will not produce the part you need. That is when you need a custom mould — built exactly to your section, your pattern and your project tolerance.

Zhihua develops custom precast concrete moulds from three kinds of input: a dimensioned CAD drawing, a photo with the sizes written on it, or a physical sample sent to the factory. After feasibility review we confirm material, wall thickness, draft angle, logo/pattern treatment, lead time and FOB Ningbo/Shanghai pricing before cutting steel for the mould tool.

The full end-to-end workflow — drawing review, sample, production, inspection, packing and container loading — is documented on our Custom Mould Process page.

Five things that determine the quote — and where custom orders usually go wrong

A custom mould quote is only as good as the input. These are the five points that move price and lead time the most, and the mistakes we see most often from first-time OEM buyers.

• Internal vs external dimensions. Drawings usually specify the finished concrete size (internal clear opening, finished depth). Moulds are cut to the external / as-cast dimension plus wall thickness and draft. If your drawing gives external dimensions only, tell us — otherwise we will build to the wrong number.
• Wall thickness and draft angle. PP and ABS moulds need a draft (taper) to demould without tearing. A 1°–2° draft is normal for block / slab shapes; deeper parts may need more. If the part must have vertical walls (e.g. a tile with zero draft), that pushes us toward a split or multi-piece mould, which costs more and lasts longer.
• Logos, letters and patterns. Embossed text (raised on the concrete) is much cheaper than debossed (engraved) because the mould is machined around the text. Deeply engraved logos, two-level patterns or fine serifs need an etched insert, which adds tooling cost. Send the artwork as AI / DXF / high-resolution PNG.
• Material choice. The default PP mould gives 150+ pour cycles and is the cheapest. If the part is large, thin-walled, or will be used in sub-zero weather, upgrade to ABS or add ribs; choose ABS when the shape needs flex to demould (e.g. some interlocking blocks).
• Sample vs drawing. A dimensioned CAD file is fastest. A photo with sizes written on it works. A physical sample mailed to the factory gives us the best chance to match texture and fit, but adds 5–7 days of courier time. If you have a sample, mail it — and send the drawing in parallel so we can start review.