CNC Machining Workshop
Established2017
Number of Machines300
LocationXiamen
Custom Online CNC Machining Services
Located in the heart of China's manufacturing hub, we provide instant online quotes for metal and plastic mechanical parts. From rapid prototyping to full-scale production, we support global shipping with machining as fast as 24 hours, bringing your ideas to life instantly.
Why Choose GSG-Tech
ISO-Certified
Our ISO 9001 and ISO 13485:2016-certified CNC machining process ensures dimensional accuracy, surface integrity, and consistent performance across prototypes and production runs.
98% On Time Delivery
With advanced CNC equipment, optimized scheduling, and an integrated manufacturing network, we deliver parts with industry-leading speed.
15+ Year Experience
Our experience enables us to anticipate challenges early, optimize production processes, and consistently deliver reliable, high-precision parts.
Engineering Support
Our experienced engineering team works closely with you from design to delivery.
CNC Machining Services for Custom Parts
We provide custom online CNC machining services ranging from rapid prototyping to high-volume production, shipped globally through our owned CNC facilities and manufacturing network in China. With over CNC machines available for milling, turning, boring, EDM, drilling, and precision grinding, we handle both simple and complex parts with machining as fast as 24 hours. ISO-certified, we ensure precision and consistency for every part.
Custom CNC Milling Services
With over 200 milling centers, including 3-axis, 4-axis, and advanced 5-axis CNC machines, we easily handle plastic and metal parts with tight tolerances and complex geometries. Serving diverse industries, we specialize in precision mold making.
Custom CNC Turning Services
Utilizing our CNC lathes, turning centers, and mill-turn machines, we manufacture cylindrical workpieces as well as parts from square or hexagonal raw materials. Turned prototypes and production parts can be delivered in just a few days.
CNC Machining Factory in China. Global Shipping.
Our robust network of CNC facilities in China ensures a 1-day turnaround for CNC parts. We are equipped with standard CNC machines, including grinders, wire EDM, and sinker EDM, alongside automated production lines. We offer precision manufacturing, seamless communication, and reliable global logistics for both prototypes and production orders.
700+
Machine Fleet0.001"
Tight Tolerances1 Day
Fast Lead Times
Sheet Metal Equipment
Established2021
Number of Machines31
LocationXiamen
Injection Molding Factory
Established2022
Number of Machines14
LocationQuanzhou
3D Printing Facility
Established2020
Number of Machines198
LocationQuanzhou
CNC Machining for Prototyping to Production
From prototyping to full-scale production, GSG-Tech provides flexible CNC machining services to support rapid prototyping, low-volume runs, and large-scale manufacturing—ensuring consistent quality, high precision, and reliable lead times at every stage of your project.
CNC Machining Materials
We offer over 30 CNC machining materials to meet your project's functional and aesthetic requirements. From aluminum, steel, and brass to advanced plastics, we provide high-quality materials for your custom CNC parts.
Metals
Aluminum
Lightweight, corrosion-resistant, and featuring a high strength-to-weight ratio, aluminum is ideal for aerospace, automotive, and construction industries. It is also highly machinable.
Color:
Silver
Grades:Aluminum 5052, 5083, 6061
Lead Time:Approx. 5 business days
CNC Machining Surface Finishes
We offer over 10 surface finishing options for your CNC prototypes and production parts. Our extensive range allows you to select the right finish based on your part's specific requirements and application.
As-Machined
Provides a cost-effective option with visible tool marks, as the surface is left directly from the CNC machine.
Anodizing
Improves corrosion and wear resistance while allowing for color dyeing, ideal for aluminum components.
Polishing
Achieves a high-gloss finish, reducing surface roughness and enhancing the aesthetic appeal of the metal.
Sandblasting
Uses pressurized sand or other media to clean and treat the surface, creating a uniform matte finish.
Brushed Finish
Creates a unidirectional fine texture, reducing the visibility of marks and scratches on the surface.
Powder Coating
Provides a thick, durable, and wear-resistant coating with excellent color and texture options for various surfaces.
Electroplating
Bonds a thin metal layer to the part, enhancing wear resistance, corrosion resistance, and surface conductivity.
Black Oxide
A conversion coating for ferrous metals that improves corrosion resistance and minimizes light reflection.
Electropolishing
An electrochemical process that smooths and brightens the surface while significantly improving corrosion resistance.
Alodine
A chromate conversion coating for aluminum that provides corrosion protection and improves paint adhesion.
Precision CNC Machining Service, Quality Guaranteed
Your success depends on reliable parts. Our CNC machining services offer precision manufacturing with a first-pass yield of up to 90%. Whether you are prototyping or in mass production, we provide premium CNC machined parts.
Certifications
Our CNC machining facilities are ISO 9001 certified, and also hold ISO 13485, ISO 14001, and IATF 16949 certifications, meeting the highest international quality and compliance standards.
Expertise
With over 30 quality engineers and 20+ advanced inspection devices like CMM, 2D measuring systems, and XRF analyzers, we ensure dimensional accuracy and performance consistency.
Transparent Process
From raw material sourcing to final inspection, every stage follows strict quality control procedures with full traceability to ensure global customer confidence.
Tolerances for CNC Machining
| General Tolerances | +-0.25mm |
| Precision Tolerances | GSG-Tech can manufacture and inspect to tight tolerances, including sub +/- 0.003" tolerances, per your drawing specifications and GD&T callouts. |
| Min Wall Thickness | 0.15mm |
| Minimum micropore | φ0.1mm |
| Maximum Part Size | CNC Milling: 4000×1500×600 mm CNC Turning: 200×500 mm |
| Minimum Part Size | CNC Milling: 5×5 ×5 mm CNC Turning: 2×2 mm |
| Production Volume | Prototyping: 1-100 pcs Low volume: 101-10,000 pcs High volume: Above 10,001 pcs |
| Lead Time | 5 business days for most projects. Simple parts can be made in as little as one day. |
Design Guidelines for CNC Machining
Improve part designs for more cost-efficient CNC machining with GSG-Tech's design guidelines. Our engineering team provides DFM feedback before production, helping ensure your parts are optimized for manufacturability and enabling a smooth transition from prototyping to full production.
| Feature | Description |
|---|---|
| Internal corner fillets | Sharp internal corners will naturally form radii due to round cutting tools; internal fillets should be 0.020"–0.050" larger than the standard tool radius, and drilled holes should follow a depth-to-diameter ratio of about 6:1 (4:1 recommended), with a maximum depth of 12× the drill diameter. |
| Undercuts | Undercuts such as square, full-radius, and dovetail profiles should be designed using standard dimensions and positioned away from internal corners to ensure proper cutting tool access and efficient CNC machining. |
| Tapped/threaded hole | For threaded holes, the recommended thread depth is about 3× the diameter for Ø1.5–5 mm threads and 4–6× the diameter for threads ≥ Ø5 mm. It is also recommended to include additional tool clearance slightly beyond the thread depth to ensure the threads are fully formed. |