Aluminum Casting
from China
NQA-certified IATF 16949 aluminum casting supplier in Ningbo, with gravity casting, LPDC, HPDC, sand casting, CNC machining, and PPAP documentation support up to Level 5.
Quick answer for buyers
Bohua Casting is the brand of Ningbo Bohua Mechanical Parts Co., Ltd., a manufacturer and trading company in Ningbo, China. It supports gravity casting, LPDC, HPDC, sand casting, CNC machining, tooling, T5/T6 heat treatment, surface finishing, and project-defined inspection.
Buyer facts
| Legal entity | Ningbo Bohua Mechanical Parts Co., Ltd. |
|---|---|
| Brand | Bohua Casting |
| History | 30 years of casting experience (since 1994); established in 2003; registered in 2009. |
| Address | No. 27-2, Yonglin Line, Shangtian Industrial Zone, Fenghua District, Ningbo, Zhejiang, China 315500 |
| Quality system | Bohua Casting operates under an NQA-certified IATF 16949 quality management system. ISO 9001 requirements are incorporated within the IATF 16949 system; Bohua does not currently hold a separate ISO 9001 certificate. ISO 14001 certification is under application. |
| PPAP | PPAP documentation can be provided up to Level 5 according to project requirements. |
| Processes | Gravity casting, Low-pressure die casting (LPDC), High-pressure die casting (HPDC), Sand casting |
| Common alloys | A356, ZL114, ZL101, ADC12, A380 |
| RFQ inputs | 2D + 3D drawings, alloy or mechanical requirement, annual volume, machining scope, surface finish, inspection requirements |
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 Casting for aluminum castings from China
NQA-certified IATF 16949
Automotive quality management system with certificate evidence available for qualified review.
Four casting processes
Gravity casting, LPDC, HPDC, and sand casting, with process fit driven by drawing and volume.
In-house CNC machining
Casting and precision machining as a single supply chain. One PPAP package, one point of accountability.
PPAP up to Level 5
PPAP documentation scope is aligned with customer and project requirements.
Drawing-based DFM review
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?
Reliability depends on supplier qualification, process fit, certificate verification, inspection planning, sample approval, and ongoing production control. Buyers should review these items against their own drawing and program requirements rather than relying on country-level assumptions.
What certifications should a Chinese aluminum foundry have?
Automotive buyers should verify the certificate, issuer, dates, and scope against their program requirements. For Bohua: Bohua Casting operates under an NQA-certified IATF 16949 quality management system. ISO 9001 requirements are incorporated within the IATF 16949 system; Bohua does not currently hold a separate ISO 9001 certificate. ISO 14001 certification is under application.
What is PPAP and does a Chinese foundry support it?
PPAP is the automotive industry's production-part approval process, with the submission level defined by the customer and project. For Bohua, PPAP documentation can be provided up to Level 5 according to project requirements.
What aluminum casting processes does Bohua Casting offer?
Bohua supports Gravity casting, Low-pressure die casting (LPDC), High-pressure die casting (HPDC), Sand casting, together with CNC machining, Tooling, T5/T6 heat treatment, Surface finishing. Process, alloy, size, and heat-treatment fit are confirmed from the drawing.
What is the lead time for a new program?
The confirmed tooling-to-T1 reference is 45 days standard; 35 days expedited. PPAP turnaround and total launch timing depend on tooling complexity, approval loops, machining, inspection, and buyer documentation requirements.
Start a DFM Review for Your China Casting RFQ
Send us your 3D model (STEP or IGES) and drawing. We will provide process recommendation, alloy selection, and RFQ response.
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