Start with a 2D drawing, 3D file or physical sample. We review the material, geometry, quantity and critical dimensions before planning the work.
Drawing & sample requirementsTianyu · Dongguan, China
Prototypes, small batches
& production runs.
Custom CNCmachining.
Metal and plastic parts, made to your drawing.
CNC milling, turning and surface finishing.
Dongguan, China
Custom parts from drawings or physical samples.Milling / Turning / Finishing / Inspection
The way we work
Machining, finishing
and inspection.
CNC milling, turning and surface treatment, with drawing review and dimensional inspection in one manufacturing workflow. We work with aluminum, stainless steel, carbon steel and engineering plastics.
Explore our capabilities- 3-axis & 3+2-axis machining
- In-house turning & finishing
- Prototypes & small batches
- Production runs
From drawing to inspection.
Scroll through the steps, or select one.Select a step to explore the process.
CNC milling and turning shape the part. We support 3-axis and 3+2-axis machining; material, geometry and surface finish are reviewed for each project.
CNC machining capabilitiesDimensional inspection checks the part against the agreed drawing. We provide 100% inspection and can supply quality and dimensional reports for the project.
Inspection & quality details
Selected components
Custom part examples.
Flanges & connectors
Multi-hole flange
A round flange with a central bore, concentric features and a pattern of mounting holes.
View part detailsMaterial comes first
The right start
for your part.
Specify the material grade and finish on your drawing, or discuss the options with us.
Explore material requirementsAluminum alloys+
Include your alloy, temper and surface requirements. Machining and finishing are reviewed for your drawing.
Stainless steel+
Specify the grade and the features to inspect. Material and inspection requirements are reviewed together.
Carbon steel+
Share the grade, material condition and any coating requirements for the engineering review.
Engineering plastics+
Specify the polymer, grade and functional requirements. Material selection is confirmed before quoting.
Surface treatment is carried out in-house. Process suitability is reviewed for your part.
Factory & equipment
The place.
The equipment.
The process.
Approximately 20,000 m² of production space in Dongguan. Explore CNC machining, automatic turning, inspection and supporting manufacturing areas.
Explore factory & equipment
Before you start
A few useful answers.
The information that helps turn your drawing into a clear machining request.
More useful informationWhat should I include in a quote request?
Send a 2D drawing, 3D file or details of a physical sample, together with material, quantity, critical dimensions, surface finish and your preferred delivery date. Include any inspection requirements.
Can you support samples through to production?
Yes. We support single-piece samples, small-batch trials and mass production. Prototypes can be available in as little as 3 days for select projects. Timing is confirmed after reviewing the part, material and finish.
What tolerances and inspection can you provide?
Standard batch production typically supports tolerances of ±0.01–0.02 mm. Concentricity down to 0.01 mm and surface roughness down to Ra 0.2 μm after treatment are project-dependent. We provide 100% inspection and can supply quality and dimensional reports. Confirm critical requirements with your drawing.
How do I send drawings or discuss a sample?
Email STEP, IGES or PDF files to vera@tianyupro.com, or contact Vera Yao on WhatsApp at +86 18512832770. We also review physical samples. Discuss sample delivery before sending a part.
What are you making next?