
Review
Drawing, model, quantity and application.

Drawing-based CNC milling, turning and multi-axis machining for industrial parts—from first-off validation to repeat production.
Tianjin OuNaiDa
We manufacture custom metal and engineering-plastic components for equipment builders, automation integrators and industrial supply partners. Geometry, material, tolerance and production volume define the process—not a generic machine list.
About OuNaiDa →Core capability
Our engineering review connects the drawing to workholding, machining, inspection and delivery requirements before production begins.


Multi-face housings, brackets, plates and fixtures produced from released drawings.

Shafts, sleeves, pins and rotational parts with controlled fit and concentricity.

Complex geometry completed in fewer setups to protect feature relationships.

Integrated secondary operations for functional diameters, flats, slots and keyways.
Manufacturing workflow
Questions are resolved early, control points are defined before the batch moves forward, and final release follows the agreed drawing and order requirements.

Drawing, model, quantity and application.

Material, workholding and control points.

Machining and in-process verification.

Final inspection and export packing.

Representative parts
Our primary work is custom milled, turned and multi-axis machined components. A focused range of shafts, gears and sprockets can be supplied when they form part of the same drawing-based requirement.
View Representative Parts ↗Quality control
Dimensions, datums, fits and records are defined from the drawing. Measurement methods are selected for the actual geometry and tolerance rather than applied as a generic checklist.

Industries served

Precision components for motion, handling and assembly systems.

Feed, spindle, clamping and structural mechanical parts.

Change parts, guides, shafts and repeat-production components.

Compact multi-face parts with controlled geometry and fit.

Custom metal components for demanding industrial assemblies.

Drawing- and sample-based replacement parts for existing equipment.
Drawing review
Include material, quantity, critical tolerances, surface finish and required documents. We will review manufacturability before quotation.
Send Your Drawing ↗