Aluminum Components for Transportation & Automotive

Chengdacai produces lightweight aluminum extrusions and CNC-machined components for commercial vehicles, electric vehicles, rail equipment and transportation systems. Integrated profiles can reduce part count while improving stiffness and assembly efficiency.

Typical Applications

EV battery trays, side rails and protective structures

Vehicle body, roof, step, trim and interior structural profiles

Rail-car flooring, luggage systems and equipment enclosures

Cooling plates, brackets and precision machined mounts

Alloy, Temper and Finish Options

Alloys	6061-T6 and 6082-T6 for structural and machined components; 6063 for trim and complex sections; 5052 or 5083 for formed or welded sheet-based assemblies.
Finishes & Processing	Anodizing, powder coating, e-coat-compatible preparation, CNC machining, friction-stir or conventional welding coordination and corrosion protection.

Engineering and Procurement Notes

Define load paths, crash or fatigue requirements, weld zones, joining method, corrosion exposure, traceability and inspection plan. Prototype validation should precede production tooling approval.

From Drawing Review to Production

Share drawings, specifications, annual volume and application conditions.

We review extrusion feasibility, alloy, tolerances, tooling and secondary operations.

Samples are inspected and approved before production release.

Production parts are finished, checked and export-packed to the agreed plan.

Product Reference: Extruded Aluminum Motor Housing

For transportation and electrically driven equipment projects, this product reference shows how an extruded motor-housing profile can be reviewed around mounting interfaces, machining access, wall thickness and surface-finish requirements.

Reference component	Extruded Aluminum Motor Housing
Key review points	Mounting interfaces, bearing or fastener locations, wall thickness, machining access, thermal considerations and surface-finish requirements.
Information for quotation	2D or 3D drawing, assembly interfaces, quantity, critical dimensions, machining requirements and finish specification.

Frequently Asked Questions

Which alloys suit transportation structures? 6061-T6 and 6082-T6 are common for structural and machined components, while 6063 can suit trim and complex profiles. Alloy selection should follow the load case, joining method and corrosion environment.

Can you machine long extrusions? Yes. We review the section, length, datums, fixture strategy and tolerances before confirming the machining plan.

Do you support prototype and production quantities? We can review drawing maturity, tooling needs, inspection requirements and quantity planning for both prototype and production programs.

Get an Engineering Review and Quotation

Send your drawing, alloy, finish, tolerances and estimated quantity. Chengdacai can review extrusion, CNC machining and finishing requirements before quotation.

Send Your RFQ