Turned Metal Parts Manufacturers

What We Manufacture in This Range

Our turned and miscellaneous parts family covers cylindrical and locating pins, spring pins, cotter pins, hinge pins, compression springs, parallel keys, pin needles and wiper shafts. Each item is produced to drawing or sample, with material, tolerance, surface finish and packaging defined before production.

We machine outer diameters from Φ1.0 mm to Φ32 mm and overall lengths from 1.5 mm to 200 mm. Cam lathes handle up to Φ20 mm. Standard mass-production tolerances reach ±0.01 mm, and high-precision custom parts for medical and aerospace applications can be controlled to ±0.003 mm.

Product Range and Application Fit

Materials and Surface Treatment

We machine low-carbon steel, medium-carbon steel, 40Cr alloy steel, SUS304 and SUS316 stainless steel, H59 brass, 6061 aluminum alloy, and support small-batch titanium alloy work. Incoming material is verified by spectrometer sampling before release to production.

Available finishes include blue-white zinc, colored zinc, black zinc, nickel plating, zinc-nickel alloy plating, Dacromet, electrophoresis, PVD vacuum coating, and stainless steel passivation. Standard finishes achieve 72 to 500 hours of neutral salt spray resistance, with longer-duration anti-corrosion processes available for harsh environments.

Manufacturing Process and Capacity

Our turning workshop runs Japanese high-precision sliding-head CNC lathes and cam automatic lathes. The Suzhou plant handles new product R&D, sampling and small-batch high-precision orders; the Vietnam plant focuses on mass standardized production. This dual-base arrangement supports prototype quantities through stable mass supply.

We produce complex special-shaped structures that cold heading cannot achieve, including eccentric grooves, micro holes, internal and external non-standard threads, multi-step shafts, PCB threaded inserts, equipment rotating shafts and precision pins. Secondary processing and collaborative production with cold heading are available for multi-step parts.

Quality Control and Acceptance

Our independent enclosed precision testing laboratory serves all four production workshops and operates under IATF 16949, ISO 9001 and ISO 14001 systems. All testing equipment is calibrated annually by third parties.

• Dimensional inspection: Zeiss 3D CMM, 2.5D optical vision measuring machine, automatic CCD sorter, contour meter and roughness tester.
• Mechanical testing: universal tensile testing machine, multi-range torque tester, Rockwell and Vickers hardness testers.
• Corrosion and environmental: two neutral salt spray chambers, constant temperature and humidity cycling chamber, electrolytic coating thickness gauge.
• Material and metallographic: optical emission spectrometer, metallographic microscope, sample cutting and polishing equipment.
• Environmental compliance: XRF fluorescence RoHS detector for batch screening; delivered products meet RoHS 2.0 and REACH.

We can issue material certificates, full-dimensional inspection reports, salt spray test reports, mechanical test reports, RoHS certificates, 8D quality improvement reports and PPAP compliance documents on request. Custom sampling plans can be aligned to your AQL standard.

Configuration Options

• Geometry: straight, stepped, grooved, threaded, eccentric or custom profile.
• Diameter range: Φ1.0 mm to Φ32 mm; cam lathe up to Φ20 mm.
• Length range: 1.5 mm to 200 mm.
• Tolerance: ±0.01 mm standard mass production; ±0.003 mm for high-precision custom parts.
• Material: carbon steel, alloy steel, stainless steel, brass, aluminum, titanium alloy (small batch).
• Finish: zinc, nickel, zinc-nickel, Dacromet, electrophoresis, PVD, passivation.
• Order quantity: prototype, pilot and mass production volumes.

Information We Use to Configure Your Solution

To prepare a suitable proposal, we need the following project inputs. These allow us to select the right process, material and inspection plan before quoting.

Documentation, Packaging and Delivery

Each batch can be supplied with dimensional inspection reports, material certificates and compliance documentation. Packaging is defined to protect critical surfaces and fits your receiving and line-feed requirements. We coordinate delivery from our China and Vietnam bases to support global OEM supply programs.

Frequently Asked Questions

What is the smallest and largest part you can turn?

We machine outer diameters from Φ1.0 mm to Φ32 mm and overall lengths from 1.5 mm to 200 mm. Cam lathes cover up to Φ20 mm. For parts outside this range, contact us to discuss feasibility.

What tolerances can you hold on turned parts?

Conventional mass-production parts are held to ±0.01 mm. High-precision custom parts for medical and aerospace applications can be controlled to ±0.003 mm, depending on geometry and material.

Can you produce from a sample rather than a drawing?

Yes. We develop and manufacture special parts from drawings, samples, technical requirements and target application scenarios. Our engineering team reviews the sample and confirms dimensions before production.

What materials do you machine?

We process carbon steel, 40Cr alloy steel, SUS304 and SUS316 stainless steel, H59 brass, 6061 aluminum alloy, and support small-batch titanium alloy machining.

What quality documents can you provide?

We can issue material certificates, full-dimensional inspection reports, salt spray test reports, mechanical test reports, RoHS certificates, 8D reports and PPAP documents. Our laboratory operates under IATF 16949, ISO 9001 and ISO 14001 systems.

Do you support prototype and small-batch orders?

Yes. Our Suzhou plant handles new product R&D, sampling and small-batch high-precision orders, while our Vietnam plant focuses on mass standardized production. We support projects from prototype through stable mass supply.