Aluminum Casting
from China
IATF 16949 certified foundry in Ningbo. Gravity die casting and LPDC with in-house CNC machining. Full PPAP Level 3 support for automotive and industrial programs.
Why source aluminum castings from China
The economics are well understood: lower labor cost, lower overhead, and the infrastructure of a mature manufacturing cluster. But the case for Chinese aluminum foundries goes beyond unit price.
Major casting hubs like Ningbo have dense supplier ecosystems — toolmakers, heat treaters, precision machinists, and surface finishers clustered nearby. Chinese foundries span the full aluminum casting process spectrum, and IATF 16949 certification is widespread among suppliers targeting automotive and tier-1 customers.
Manufacturing depth
Dense supplier ecosystems in Ningbo, Suzhou, and Dongguan keep lead times short and logistics simple.
Process range
Sand casting, gravity die, LPDC, and HPDC with alloy capability from A356-T6 structural grades through A380.
Quality infrastructure
CMM, OES spectrometers, hydrogen degassing, and in-house heat treatment are standard in qualified facilities.
Port access
Ningbo-Zhoushan port — one of the world's highest-volume container ports — with established routes to North America and Europe.
How to qualify a Chinese casting supplier
1. Quality system verification
Confirm IATF 16949 certificate is current and scope covers casting. Review internal audit findings and corrective action closure rates.
2. Process capability and equipment
In-house OES spectrometer, rotary degassing, CMM with traceable calibration, and heat treatment furnace with TUS records.
3. PPAP track record
Request a completed PPAP package from a current automotive program. Review FAIR/ISIR completeness and CMM report format.
4. Sample parts and FAI
Review T1 samples against drawing: dimensional FAIR, chemistry MTC, visual inspection, and tensile/hardness from heat treat batch.
Casting processes available
| Process | Best for | Tolerance | T6 |
|---|---|---|---|
| Gravity die casting | Brackets, housings, arms (1K–50K/yr) | CT6–CT8 | Yes |
| LPDC | Complex cores, wheels, thick sections | CT6–CT8 | Yes |
| Sand casting | Prototypes, large parts, <500/yr | CT10–CT12 | Yes |
| HPDC | High-volume thin-wall, non-structural | CT5–CT7 | No |
For automotive structural components — suspension links, brackets, knuckles, motor housings with fatigue requirements — gravity die or LPDC is the appropriate process.
CNC machining and the combined supply chain
With a combined casting-and-machining supplier, one supplier owns the complete PPAP submission from raw casting through finished dimensions. Casting datums are set with machining in mind, non-conformances have a single point of accountability, and CMM inspection covers both as-cast and machined features in one report.
For automotive programs with tight PPAP requirements, a foundry with in-house CNC machining capability simplifies program management considerably.
Bohua Casting at a glance
Why Bohua Cast for aluminum castings from China
IATF 16949 certified
Automotive quality system with CSR flow-down, documented PPAP process, and internal audit program.
Gravity die + LPDC
Both T6-capable processes under one roof. Process recommendation driven by your geometry and volume.
In-house CNC machining
Casting and precision machining as a single supply chain. One PPAP package, one point of accountability.
Full PPAP Level 3
CMM, OES spectrometer, mechanical testing, and complete documentation package for automotive tier-1 programs.
DFM review in 48 hours
Draft angles, wall thickness, core feasibility, stock allowance, and alloy selection before you finalize GD&T.
Ningbo port access
Direct proximity to Ningbo-Zhoushan port reduces freight cost and transit time to North America and Europe.
Frequently asked questions
Is it reliable to source aluminum castings from China?
Yes, when the supplier is properly qualified. China holds approximately half of all IATF 16949 certificates globally, and major casting hubs like Ningbo have the process infrastructure — CMM, OES, degassing, heat treatment — to support automotive-grade supply chains. The qualification process (PPAP, supplier audit, FAI) is the mechanism for separating capable suppliers from paper-certificate operations.
What certifications should a Chinese aluminum foundry have?
IATF 16949 is the standard for automotive supply chain suppliers. ISO 9001 alone is insufficient for tier-1 automotive programs. Verify the certificate is current and issued by an IATF-recognized certification body, and that the scope covers the specific casting processes you are sourcing.
What is PPAP and does a Chinese foundry support it?
PPAP (Production Part Approval Process) is the automotive industry's part approval standard. Level 3 is the most common requirement for new parts, covering 18 elements including dimensional reports, material certs, process flow, control plan, PFMEA, and FAI/ISIR. Qualified Chinese foundries with IATF 16949 certification routinely support Level 3 PPAP.
What aluminum casting processes does Bohua Cast offer?
We operate gravity die casting (permanent mold) and low pressure die casting (LPDC). Both processes are T6-capable and support IATF 16949 quality requirements. We also provide in-house CNC machining to deliver finished or semi-finished parts.
What is the lead time for a new program?
Tooling design and build: 4–8 weeks depending on complexity. PPAP turnaround (T1 samples through approved PPAP): 2–4 weeks. Total new program launch from PO to approved parts is commonly 8–14 weeks. DFM review and quoting begin within 48 hours of receiving a 3D model and drawing.
Get a DFM Review Within 48 Hours
Send us your 3D model (STEP or IGES) and drawing. We will provide process recommendation, alloy selection, and RFQ response.
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