Precision Metal Casting

Our Precision Casting Capabilities Overview

Three casting processes matched to your part geometry, material, and production volume — from high-volume die casting for standardized components, to large custom parts produced through sand casting, to complex, fine-detail geometries achieved with investment casting, giving you the flexibility to choose the right method for every project.

Die Casting

High-pressure casting for high-volume aluminum and zinc parts, delivering excellent surface finish and dimensional repeatability.
Sand Casting

A flexible, low-tooling-cost process suited to large parts, low-to-mid production volumes, and a wide range of ferrous and non-ferrous metals.
Investment Casting

Lost-wax casting for complex geometries and fine surface detail, minimizing the need for secondary machining.

Casting Capabilities

Casting Accuracy：

Standard ±0.3 mm (as-cast) Custom ±0.1 mm (with post-cast machining)
Maximum Part Size：

Up to 600 × 400 mm (die casting) Larger dimensions available for sand casting
Minimum Wall Thickness：

1.5 mm (die casting)
Typical Lead Time：

20–35 days for first production run (including tooling) 10–15 days for repeat orders
Pricing：

Transparent quotation covering tooling cost, material, part complexity, and quantity.
Castable Materials：

Supports a wide range of aluminum, zinc, magnesium, and ferrous alloys for diverse application needs.

CNC Milling Factory

Established	2000
Number of Machines	70+
Location	Zhongshan

CNC Turning Factory

Established	2000
Number of Machines	30+
Location	Zhongshan

Die Casting Factory

Established	2010
Number of Machines	10+
Location	Zhongshan

Injection Molding Factory

Established	2008
Number of Machines	20+
Location	Zhongshan

Forging Factory

Established	2014
Number of Machines	10+
Location	Zhongshan

Castable Materials of Precision Casting

We cast a wide range of metals across die casting, sand casting, and investment casting — from lightweight aluminum for enclosures to durable cast iron for structural components. Browse our standard material options below.

Metals & Alloys

Metals	Characteristics	Common Grades
Aluminum Alloys	Lightweight, excellent machinability, and superior surface treatment compatibility.	ADC12, A380, A413, ZL102
Stainless Steel	High corrosion resistance with reliable mechanical properties.	CF8, CF8M (304/316 cast equivalent)
Carbon Steel	High strength with good post-cast machinability.	WCB, 1020, 1045
Brass	Good corrosion resistance, decorative finish, and good machinability.	C83600, C95400
Zinc Alloys	Excellent fluidity, cost-effective, and ideal for precision aesthetic components.	Zamak 3, Zamak 5

Custom Metal Casting Parts We Manufacture

Industrial Housings and Equipment Covers

Keywin manufacture cast metal housings, machinery covers, and protective components requiring complex external shapes and mounting features.

For components with critical interfaces, our machining capabilities support accurate holes, threaded connections, and mating surfaces after casting.

Automotive and Mechanical Components

Our precision metal casting services support selected automotive-related equipment components, mounting brackets, gearbox covers, and mechanical housings.

Manufacturing requirements are evaluated according to material grade, operating loads, dimensional tolerances, and production volume.

Pump and Machinery Components

Precision metal casting can be suitable for pump housings, industrial equipment bodies, and components containing complex internal cavities.

Our engineers review wall thickness, draft angles, core requirements, and machining allowances to help achieve practical mold designs.

Precision Connectors and Metal Fittings

For components requiring detailed shapes or multiple mounting features, we offer casting followed by drilling, tapping, and CNC finishing where necessary.

These precision metal casting services support industrial connectors, custom fittings, and mechanical assembly components.

Our Custom Precision Metal Casting Process

1. Drawing and Requirement Review

Submit 2D drawings or 3D CAD files, material specifications, expected quantities, and functional requirements.

2. Casting Process Selection

Our engineers evaluate part geometry, casting feasibility, tooling cost, and production volume to recommend an appropriate casting method.

3. Mold Design and Development

We develop the mold or die and evaluate manufacturing parameters according to the approved design.

4. Mold Trial and Sample Inspection

Trial parts are produced and inspected to identify potential dimensional or quality issues before production approval.

5. Casting and Secondary Machining

Approved components are cast, trimmed, and machined as required to meet the final drawing specifications.

6. Final Inspection and Delivery

Finished castings undergo applicable dimensional and quality inspections before packaging and shipment.

Learn More About Our Material

Tolerance & Quality Control

Casting tolerances are inherently wider than machining, so we build quality control into every stage — from mold trial to final shipment — to keep dimensions predictable across production runs.

Our QC workflow follows: Incoming Material Inspection → First Article Inspection (FAI) → In-Process Sampling → Outgoing Quality Control (OQC), with critical dimensions verified against the mold trial baseline.

For parts requiring tighter tolerances, we apply post-cast CNC machining on critical features, holding dimensions within ±0.1 mm where the as-cast tolerance isn't sufficient. Full inspection reports are available on request.

We support customized acceptance criteria — including porosity limits, hardness testing, and material certification — for projects with specific compliance requirements.

Cooperation & Casting Process

Requirement Review

Confirm design files, material specification, and production volume; assess casting feasibility and part geometry.

Process & Mold Planning

Determine the appropriate casting method and mold structure; provide tooling lead time and cost quotation.

Tooling & Setup

Manufacture and trial the casting tooling (die or mold), adjusting parameters until sample parts meet drawing tolerances.

Precision Casting

Run production casting, followed by trimming, post-cast machining, and inspection to meet final dimensional requirements.

Why Choose Our Casting Service

Excellent Service Support
Advanced Equipment & Quality Control
Flexible Casting Capability
Customization & Engineering Support

Excellent Service Support

From tooling design through to final delivery, our team keeps you informed at every stage — including mold trial results and any adjustments needed before production.

Quotes turned around within 24 hours

Support for both prototype tooling and full production molds

Fast resolution for quality concerns, including rework or re-casting

Advanced Equipment & Quality Control

Our foundry runs high-pressure die casting machines and precision CNC machining centers for post-cast finishing, backed by a dedicated QC team.

In-house mold design and toolmaking

Post-cast CNC machining for tight-tolerance features

Full inspection, including porosity and material certification on request

Flexible Casting Capability

From small precision components to large structural parts, we match the casting process and tooling approach to your project scale and budget.

Die casting, sand casting, and investment casting under one roof

Scalable tooling options from prototype to production molds

Capacity for both new product launches and long-term supply contracts

Customization & Engineering Support

Our engineering team reviews part geometry for castability before tooling begins, helping avoid costly mold rework later.

Free DFM (Design for Manufacturability) and mold-flow review

Custom post-cast machining and surface finishing

Engineering support for teams new to casting design

FAQ

Do you accept prototype or small-batch orders?

Yes. For early-stage projects, we offer rapid tooling or 3D-printed sand mold options before committing to full production tooling.
What is your production lead time?

Standard lead time is 20–35 working days for the first production run, including tooling development. Repeat orders using existing tooling are typically 10–15 working days.
What information do I need to provide for a quotation?

A 2D drawing or 3D CAD file, material, quantity, and any post-cast machining or surface finish requirements.
What if I don't have drawings? Can you help?

Yes, our engineering team can assist with design support based on samples, sketches, or functional requirements — including mold-flow feasibility review.
How do I know which casting process is right for my part?

It depends on volume, size, and tolerance needs. Die casting suits high-volume aluminum or zinc parts with tight tolerances; sand casting suits large parts or low volumes where tooling cost matters; investment casting suits complex geometries or fine surface detail with minimal machining. We're happy to recommend the best fit based on your drawing.
Can casting achieve tight tolerances directly, or do parts need machining afterward?

As-cast tolerances are typically ±0.3 mm and depend on part size and geometry. For features requiring tighter tolerances, we apply post-cast CNC machining to hold dimensions within ±0.1 mm or better.

Custom Metal Casting Parts We Manufacture

Industrial Housings and Equipment Covers

Automotive and Mechanical Components

Pump and Machinery Components

Precision Connectors and Metal Fittings

Our Custom Precision Metal Casting Process

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