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Zhongzhu provides CNC milling, turning, grinding and secondary machining for custom parts made from aluminum, steel, brass, zinc, magnesium and engineering plastics.
3-axis and precision secondary machining
round parts, shafts and inserts
tapping, drilling and boring
anodizing, plating and polishing
Engineers review mounting surfaces, hole positions, sealing faces and thread callouts before programming.
Aluminum, steel, brass, zinc, magnesium and engineering plastic parts can be machined for functional assemblies.
Machined parts can move into anodizing, plating, brushing, polishing or blasting without changing suppliers.
The following framework helps technical buyers compare capability, confirm RFQ details and prepare drawings for review.
| Core processes | CNC milling, CNC turning, drilling, tapping, boring, grinding and secondary machining. |
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| Materials | Aluminum, steel, stainless steel, brass, zinc, magnesium and engineering plastics. |
| Typical files | STEP, IGES, STL, DWG, DXF, PDF drawings and assembly reference files. |
| Tolerance | General and critical tolerances are reviewed by drawing and feature geometry. |
| Surface options | Anodizing, plating, passivation, polishing, brushing, blasting and powder coating. |
| Critical callouts | Highlight datum references, fit surfaces, thread class, flatness, perpendicularity and cosmetic zones. |
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| Batch size | Prototype, pilot lots and repeat orders are reviewed differently for tooling, fixturing and inspection cost. |
| Material notes | Specify grade, hardness, heat treatment and finish compatibility where applicable. |
| Inspection plan | CMM, caliper, gauge and visual checks can be aligned to drawing risk. |
| Delivery output | Parts can ship machined only or with finishing, assembly and protective packaging. |
Confirm geometry, datum references and tolerance risk.
Select machining route, fixture concept, tools and finish sequence.
Machine features in controlled operations with in-process checks.
Inspect dimensions, appearance and packaging before shipment.
CNC quality work focuses on datum control, tool stability, burr prevention and fit-critical features that affect assembly performance.
Parts are held according to functional datum and deformation risk.
Tool paths, cutting tools and replacement timing are managed for stable surfaces and dimensions.
Tapped holes, counterbores, bores and mounting features can be checked before finishing.
Cosmetic faces are protected through deburring, cleaning, finishing and packing.
Professional staff and skilled production personnel
Advanced CNC and heavy die-casting units
In-house production, QC and finishing coordination
Lightweight enclosures, covers, brackets and frames for electronics and industrial assemblies.
Repeat machined parts with controlled datum, threaded features, mounting surfaces and finish requirements.
Secondary machining for zinc, aluminum and magnesium alloy die-cast components.
Machined components with anodizing, plating, polishing, blasting or coating.
Send 3D files, 2D drawings, material, quantity, finish, tolerance notes and inspection requirements. Application details help improve DFM suggestions.
Yes. Zhongzhu supports samples, engineering validation and repeat production, with process route confirmed by drawing, material and volume.
Yes. Zhongzhu can coordinate CNC machining, die casting, injection molding, stamping and surface finishing for multi-process component programs.
Typical applications include telecom, automotive, medical, electronics, industrial equipment, hardware and custom mechanical assemblies.
Yes. The engineering team reviews manufacturability, cost drivers, tolerance risk, surface finish options and production planning before quotation.
Quality checks are aligned to drawings, critical features, visual requirements and project-specific inspection standards.
Simply upload your product blueprints. Our engineering division will analyze your files and provide a Free DFM report and pricing quote within 24 hours.