Custom CNC Machining Services | ISO 9001 Certified | ±0.01mm Tolerances

RuiYi Industrial Manufacturer delivers high-precision CNC machining services for prototypes and production runs, serving clients globally including USA, UK, and Europe. With tolerances ±0.01mm, support for aluminum, stainless steel, titanium, brass, and 40+ other materials, and ISO 9001-certified quality control. We machine complex parts exactly to spec. Upload your CAD file and get a quote within 1 business day.
cnc machining part 1

What Is CNC Machining?​

CNC (Computer Numerical Control) machining is a manufacturing process that uses computer controlled machines to produce parts with exceptional accuracy and consistency. Advanced software guides cutting tools to remove material from metal or plastic workpieces, creating components that match exact design specifications. 
This process supports a wide range of machining methods, including milling, turning, drilling, boring, and threading. Because CNC machining can achieve tight tolerances and repeatable results, it is widely used for prototypes, production parts, industrial equipment, medical devices, automotive components, and many other applications. 
One of the biggest advantages of custom CNC machining solutions is flexibility. Engineers and product developers can create simple or highly complex parts using a variety of materials while maintaining excellent dimensional accuracy. CNC machining also reduces manual errors, improves production efficiency, and helps ensure consistent quality across every order. 
At RuiYi Industrial Manufacturer, our CNC machining services combine advanced equipment, experienced technicians, and strict quality control processes. This allows us to deliver reliable parts for both prototype and production projects while providing customers with factory direct access to industrial grade machining capabilities at competitive prices. 

How It Works

CAD Design

The part is designed in CAD software

CAM Programming

Toolpaths are generated for machining.

CNC Machining

Milling or turning operations shape the part.

Inspection & Finishing

Parts are measured and surface treated as required.

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cam
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Our CNC Machining Services

It include advanced CNC milling for producing complex and highly accurate parts. Using 3 axis, 4 axis, and 5 axis machining technology, we manufacture components from a wide range of metals and engineering plastics. This process allows us to create detailed geometries, maintain tight tolerances, and deliver consistent quality for prototype and production projects.

Ideal for manufacturing cylindrical and rotational parts with exceptional precision. As an experienced custom CNC machining manufacturer in China, we use modern turning equipment to produce components efficiently while maintaining strict quality standards. This process supports both small and large production runs across a variety of industries.

CNC Machining for Prototypes & Production

We provide reliable solutions for engineers, product developers, and businesses seeking high quality manufactured parts. With advanced equipment, strict quality control, and ISO 9001 certified CNC machining processes, we deliver accurate components for projects of every size. From prototypes to production runs, our team combines expertise with rapid CNC machining capabilities to help bring products to market faster.
  • Fast production of prototype parts directly from CAD files 
  • Supports design validation and functional testing 
  • Available in a wide range of metals and engineering plastics 
  • Delivers accurate parts with short lead times 
  • Ideal for small batch manufacturing requirements 
  • Reduces the gap between prototyping and full production 
  • Maintains consistent quality across every part 
  • Provides a cost effective solution for growing projects 
  • Efficient production for moderate batch quantities 
  • Consistent quality and repeatable manufacturing results 
  • Helps scale prototypes into production ready components 
  • Supports faster growth without the cost of mass production 

Order Custom Parts Online : Fast, Simple, Reliable

Get an Instant Quote

Upload your drawings to our quotation platform and our team will review your requirements and provide a quotation within 1 day.

Start Production

Once your order is confirmed, we begin production while carefully monitoring quality at every stage to ensure your parts meet specifications.

Receive Your Parts

Your order will deliver quickly and safely. Our team continues to provide support after delivery to ensure a smooth experience from start to finish.

Get Instant Quote
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CNC machining Services
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Receive Your Parts

Why Choose Ruiyi Industrial Manufacturer?

RuiYi Industrial Manufacturer is an experienced CNC machining manufacturer trusted by customers around the world. With advanced equipment, skilled engineers, strict quality standards, and efficient production processes, we deliver reliable manufacturing solutions for both prototypes and production projects. Our goal is to provide consistent quality, dependable service, and long term value for every customer.

CNC Machining Design Guidelines

Good design decisions can improve part quality, reduce machining time, and lower production costs. RuiYi Industrial Manufacturer helps customers optimize designs for efficient manufacturing while maintaining accuracy and performance. The following guidelines can help improve the success of your custom CNC machining services project.
Tolerances & Wall Thickness
  • Avoid over-tight tolerances
  • Maintain uniform wall thickness
Holes & Threads
  • Use standard drill sizes when possible
  • Minimize deep, small-diameter holes
Cost Optimization Tips
  • Simplify geometries
  • Reduce setup changes

Real Parts - Real Clients - Real Precision

As a versatile manufacturing technology, CNC machining is applicable across various industries. RuiYi has an extensive experience in this area, and the following examples of machined parts include products such as consumer electronics, automotive systems, medical devices, robotics, industrial equipment, and more.

Metal Materials Suitable for CNC Processing

With a wide range of compatible materials, CNC technology offers exceptional versatility, providing numerous options for completing everything from rapid prototyping to production runs of custom, complex parts. For your manufacturing requirements, we offer instant quotations for over 40 metals and plastics, allowing you to compare prices across different machining materials effortlessly.

Plastic Materials for CNC Machining

Plastics are a highly favored choice for CNC machining due to their extensive variety, relatively affordable cost, and notably swift machining duration. We offer immediate quotes for over 100 types of plastic, facilitating price comparisons across various processing materials for your convenience.

Surface Finishes

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NameDescriptionMaterialsColorTextureMore
Brushing
Brushing, a surface treatment method, embellishes workpieces with decorative lines achieved by grinding, culminating in a stunning and aesthetically pleasing finish.Aluminum, Brass, Stainless Steel, Steel, ABS,etcN/ASatinbru
Sand Blast
Sandblasting employs high-speed sand flow to cleanse and roughen a product's surface, aiming to attain precise levels of cleanliness and variable roughness on the workpiece surface.All Metal Materials, PlasticN/AMattesan
Tumbling
Tumbling involves placing materials in a rotating drum or container along with abrasive media for a surface treatment process. This action smoothens surfaces, removes burrs from edges, and enhances uniformity.All MaterialsN/ASmooth, Mattetum
Polishing
Polishing, a mechanical surface treatment method, employs abrasives or buffing wheels to eliminate imperfections, refine surfaces, and elevate the appearance of materials, resulting in a glossy and reflective finish.All MaterialsN/ASmoothpol
Anodizing
Anodizing is a surface treatment technique specifically designed for aluminum and its alloys. It generates a protective layer that enhances corrosion resistance, wear resistance, and hardness, simultaneously altering the material's surface appearance.Aluminum, TitaniumClear, Yellow,
Green, Blue,
Black, etc
Smooth, matte finish.ano
Painting
Mount the product onto the rotating bracket and securely fasten the bracket onto the assembly line. Apply the paint evenly across the product's surface. While this process improves the product's tactile sensation, it may also render it vulnerable to scratches.All MaterialsClear, Yellow, Green, Blue, Black, MultipleGloss, semi-gloss, flat, metallic, texturedpain
Black Oxide
Black oxide, an oxide film primarily employed to augment product corrosion resistance and appearance, simultaneously diminishing light reflection, proves highly effective for treating surfaces of steel and stainless steel.Steel, Stainless SteelBlackSmooth, mattebo
Electroplating
Electroplating serves functional, decorative, and corrosion-related functions, and is widely utilized across diverse industries. For example, the automotive industry frequently utilizes chrome-plating for steel automobile components.Aluminum, Steel, Stainless SteelGold, Silver, Nickel, Copper, Brass, Zinc, ChromeSmooth, glossy finishele
Powder Coating
Powder coating is a method of applying dry powder onto metal surfaces, usually via electrostatic means. Subsequently, the coated metal undergoes curing through either heating or exposure to ultraviolet light, resulting in a resilient and visually appealing finish.Aluminum, Stainless Steel, Steel,etcCustomGloss, matte or semi-glosspc
Alodine
An alodine finish is a conversion coating method applied to aluminum parts, forming a thin protective film that effectively prevents corrosion. Additionally, it functions as a primer for subsequent painting processes.Aluminum, Stainess SteelClear, GoldAs machinedalo
Passivation
Passivation is a process applied to stainless steel to bolster its corrosion resistance. This entails submerging the metal in an acid solution to eliminate contaminants and promote the formation of a protective oxide layer on the surface, thereby averting rust and corrosion.Stainess SteelN/AMattepass
Electroless Plating
Electroless plating is a chemical process that deposits metal onto a substrate without the need for an external electrical current. This method initiates a catalytic reaction between the substrate and a metal ion solution, resulting in the formation of a uniform and strongly adherent coating.Metal, PlasticGold, Silver, Nickel, Copper, Brass, Zinc, ChromeSmooth, glossy finishele

Tolerances in Precision CNC Manufacturing

Our CNC machining service follows ISO 2768 standards for metals and ISO 2768 C for plastics. These standard tolerances help ensure consistent quality and manufacturing accuracy across a wide range of parts. If your project requires tighter tolerances, simply specify them on your engineering drawing and our team will review the requirements accordingly.
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Standards

CNC Milling

CNC Turning

Maximum Part Size7500×3400×1200 mm

295×133.8×47 in.

200×500 mm

7.9×19.7 in.

Minimum Part Size3.5×3.5 mm

0.13×0.13 in.

2×2 mm

0.079×0.079 in.

Minimum Feature SizeΦ 0.50 mm

Φ 0.00197 in.

Φ 0.50 mm

Φ 0.00197 in.

Standard TolerancesMetals: ISO 2768-m
Plastics: ISO 2768-c
Metals: ISO 2768-m
Plastics: ISO 2768-c
Linear Dimension+/- 0.01 mm
+/- 0.0004 in.
+/- 0.01 mm
+/- 0.0004 in.
Hole Diameters
(Not Reamed)
+/- 0.01 mm
+/- 0.0004 in.
+/- 0.01 mm
+/- 0.0004 in.
Shaft Diameters+/- 0.01 mm
+/- 0.0004 in.
+/- 0.01 mm
+/- 0.0004 in.
Edge ConditionSharp corners will be removed in the form of a chamfer or radius. The size of the chamfer, or resulting radii, must be indicated on the drawing.
Threads and Tapped HolesDiameter: Φ 1.5-5 mm, depth: 3×diameter

Diameter: Φ 5 mm or more, depth: 4-6×diameter

Diameter: Φ 1.5-5 mm, depth: 3×diameter

Diameter: Φ 5 mm or more, depth: 4-6×diameter

Ruiyi can manufacture threads to any specification and size required by our customers.
TextMinimum width of 0.5 mm, depth of 0.1 mm

Ruiyi can utilize CNC engraving or laser carving to create standard text according to customers' requirements.

Ruiyi can employ laser marking to create standard text on CNC turned parts.
Lead Time5 business days5 business days

We Ship Custom CNC Parts to Every State & Region Worldwide

Frequently Asked Questions

CNC (Computer Numerical Control) machining is a manufacturing process where pre-programmed software controls machinery to produce precise parts and components from various materials.

We offer CNC milling, CNC turning, 3-axis, 4-axis, and 5-axis machining, as well as EDM (Electrical Discharge Machining) and precision grinding.

We work with metals like aluminum, steel, brass, titanium, and copper, as well as plastics such as ABS, polycarbonate, POM, and more.

Our lead time typically ranges from 3 to 10 business days, depending on the complexity and quantity of the project.

We can machine parts up to 7,500 × 3,400 × 1,200 mm for CNC milling, and up to 200 × 500 mm for CNC turning. For oversized or custom requirements, contact us directly to discuss your project.

Yes, we specialize in both rapid prototyping and low-volume production, ensuring flexibility to meet your specific needs.

Depending on the material and part geometry, we can achieve tolerances as tight as ±0.01mm, even more.

Yes, we provide surface finishes such as anodizing, polishing, powder coating, plating, and more, depending on your requirements.

We follow strict quality assurance protocols, including CMM (Coordinate Measuring Machine) inspections, dimensional checks, and material certifications.

Yes, we ship globally with competitive pricing. Our pricing is based on material costs, machining time, complexity, and order volume.

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