Custom aluminum die casting
Motor housings, covers, structural parts, electrical box covers, and other drawing-based castings for OEM and industrial assemblies.
Aluminum die casting supplier | CNC machined parts | North America RFQs
Jiangyin Weiren Aluminum
Source aluminum castings and CNC machined parts from a factory that handles casting, heat treatment, machining, coating, and inspection in-house. Weiren supports EV wheel hubs, motor housings, wind power structures, marine hydraulic parts, cooling housings, flanges, guide wheels, and many other complex aluminum alloy components built from customer drawings. For suitable machined features, achievable precision can be controlled within 0.02 mm.
ISO9001Certified since 2018
IATF16949:2016Automotive quality system
20,000+ sqmManufacturing facility
40 yearsManufacturing experience
Built for repeatable supply
Factory-direct aluminum casting for buyers with drawings, tolerances, and repeat orders.
Many RFQs start with a 2D drawing, a STEP file, a target annual volume, and a question about whether the supplier can keep casting, machining, and inspection under control. Weiren is built for that kind of sourcing work: high-pressure die casting, low-pressure casting, gravity casting, T6 heat treatment, CNC machining, surface finishing, and inspection are handled as one production flow. The factory also supports solutions for complex aluminum alloy structural parts, aluminum alloy forged parts, and steel forged parts when the project calls for them.
Common RFQs
Aluminum casting and machining projects buyers ask us to review
These are the search terms and project types that usually match Weiren's equipment base. The gallery examples do not limit what we can review; the exact answer still depends on drawings, alloy, tolerance, finish, annual volume, and inspection requirements.
Low-pressure and gravity cast aluminum parts
Wheel hubs, flanges, guide wheels, and larger aluminum components where process control matters more than catalog availability.
CNC machined aluminum components
Castings with machined mounting faces, sealing surfaces, threaded features, and inspection points for repeat production.
Industrial cooling and energy components
Impellers, ventilation blades, cooler housings, wind power structures, marine hydraulic parts, and similar complex aluminum components made to buyer drawings.
Product samples
Aluminum casting and machined part sample gallery
Review current samples before sending an RFQ for custom aluminum castings, CNC machined aluminum parts, wheel hubs, housings, flanges, guide wheels, cooling components, or structural castings. These photos show representative work only; Weiren can evaluate many other complex aluminum alloy components from customer drawings, including precision features, aluminum alloy forged parts, and steel forged parts.
27current product samples
27shown in this view
<=0.02 mmachievable machining precision
Company document
Download the detailed company profile.
Detailed company introduction covering product process control, heat treatment, surface treatment, product inspection, and certifications.
Manufacturing capability
Die casting, low-pressure casting, gravity casting, CNC machining, and finishing
A factory profile for buyers who need process control, sample review, and repeat production instead of a trading catalog. Actual machining precision can be controlled within 0.02 mm for suitable features, and A356 aluminum can achieve actual tensile strength of 290-320 MPa according to heat treatment, part structure, and inspection requirements.
Core Processes
- High-pressure die casting, low-pressure casting, and gravity casting
- Alloy addition, degassing, spectral element analysis, and sample retention
- T6 heat treatment with recorded process data for review
- CNC machining centers and precision CNC machine tools
- Shot blasting, spray coating, and surface treatment lines
- Drawing-based review for complex aluminum structures, aluminum forgings, and steel forgings
- Actual machining precision within 0.02 mm for suitable features
Raw material control
Melting and refining
Casting
Heat treatment
CNC machining
Surface finishing
Final inspection
Quality and traceability
Inspection equipment buyers can ask to review.
For aluminum casting RFQs, good samples are not enough. Buyers usually need alloy checks, dimensional reports, mechanical test data, and a clear route for finding problems before parts ship.
Ask for capability documentsSpectrometerAlloy element verification
X-RayInternal flaw detection
High-precision Coordinate Measuring MachineDimensional inspection and tolerance verification
Tensile testingMechanical performance checks
A356: 290-320 MPaActual tensile strength range for applicable aluminum alloy programs
<=0.02 mmAchievable machining precision for suitable features
Hardness testingBrinell and Rockwell capability
Salt sprayCoating and surface validation
1000x German ZEISS metallographic microscopeMaterial structure review
MetallographyMaterial structure review
Process recordsBatch reliability and traceability
Industries and customer references
Complex aluminum parts for mobility, energy, marine, cooling, and industrial equipment
The applications below show where our current sample parts are used, but they are not the boundary of our manufacturing scope. Customer and supplier names are shown as text references from the supplied company presentation. No logos are used.
EV and two-wheel mobility
Electric motorcycle wheels, electric vehicle hubs, scooter and motorcycle components.
Bosch (Ningbo) e-Scooter Motor Co., Ltd. | Bafang ElectricAutomotive and new energy vehicles
Engine housings, covers, guide wheels, and structural aluminum components.
BMW supplier reference | Tesla supplier reference | BYD supplier referenceIndustrial equipment and wind power
Wind power structural parts, ventilation parts, cooling housings, and coupling components.
Reich Drive Systems | Kruger ventilation systemsMedical, marine, and specialty systems
Medical tabletops, yacht hydraulic unit parts, and precision cooling or impeller components.
Siemens supplier reference | Suzhou Huaya IntelligenceCompany profile
An aluminum casting and machining factory based in Jiangyin, China.
Jiangyin Weiren Aluminum integrates R&D, design, manufacturing, and sales. The company expanded into a new factory in Huangtang Industrial Zone, Xiake Town, Jiangyin in 2012, covering 20 acres with more than 20,000 square meters of building area.
The factory base includes die-casting machines, low-pressure casting machines, gravity casting machines, heat treatment equipment, CNC machining centers, precision CNC machine tools, shot blasting lines, coating lines, and a physical and chemical inspection room. North American buyers can send drawings for castings, machined parts, coated parts, complex aluminum alloy structures, aluminum alloy forged parts, steel forged parts, or assemblies that need inspection records before shipment.
Request for quote
Send drawings for an aluminum casting or CNC machining RFQ.
For a faster technical review, include the part application, alloy or material standard, finish, tolerance notes, inspection requirements, target annual volume, and whether 2D drawings or 3D files are available. You can select drawing files, STEP files, or images in the RFQ form; when the email window opens, attach the selected files before sending. If your part is not shown in the sample gallery, choose the other-products option below.