Custom CNC Machining Services from China

Deliver your CNC Machining parts as design specifications, on time, and at a cost-effective factory price.

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Precision CNC Machining Services Supplier in China

Are you looking for a reliable partner to provide CNC machining services?

AT Machining is a leading CNC machining services supplier in China.
Our 3-axis, 4-axis, and 5-axis CNC milling, turning centers and CNC Lathe machine enable to make precise, high-quality CNC parts that fulfill your custom specifications.

With over 50 sets of CNC machines in China, AT Machining can be your ideal choice for outsourcing custom and precision CNC machining services. no matter your industry. Get your quote today.

3 Axis, 4 Axis and 5 Axis CNC Machining Service for simple and complex geometries parts.

CNC turning with live tools combines lathe and milling capabilities to machine parts with cylindrical features.

Finishes Services

Add multiple finishes to your parts, such as Anodizing, Sand Blast, Powder Coat, Plating, etc.

Materials for CNC Machining Parts

AT offers a wide variety of materials for custom CNC machining,  plastic, and metal, including but not limited to:

CNC Metals

Aluminum: Aluminum’s strength-to-weight ratio, affordability, and recyclability have made it widely used across industries worldwide.

Alloys: 6061-T6, 7075-T6, 2024, 5052, 6060, 5083, 2017, 6082

Finishing Options: Alodine,  Anodizing Types II, III, III + PTFE, ENP, Media Blasting, Nickel Plating, Powder Coating, Tumble Polishing

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aluminum cnc machining service china

Stainless steel: Stainless steel’s corrosion resistance and ductility make it ideal for long-term exposure to elements and easy shaping into different forms

Finishing Options: As machined, Bead Blasted, Polishing, Decorative Chrome Plating, Powder Coat, Nickel Plating, Gold Plating, Silver Plating

Alloys: SS303, Stainless Steel 304/304L, Stainless Steel 316/316L, Stainless Steel 17-4, Stainless Steel 416, etc.

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ss18 8 stainless steel cnc turning services

Alloy Steel: Alloy steel is steel mixed with elements like manganese, nickel, and chromium to enhance its strength, hardness, corrosion resistance, and durability, tailored to meet specific application needs.

Alloy: AISI 1215, AISI 4140, AISI 4340, AISI 8620, AISI 4130

Finishing Option: Polishing, Plating, Painting, Powder Coating and etc.

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cnc machined alloy steel gears

Tool Steel: Tool steel is a type of high-carbon and high-alloy steel that is specifically designed to be used in the manufacture of cutting tools, dies, and molds. It is valued for its high hardness, wear resistance, and toughness, which make it suitable for applications where the tool is subjected to repeated impacts or stresses.

Alloy: A2 Tool Steel, D2 Tool Steel, O1 Tool Steel, S7 Tool Steel, M2 Tool Steel

Finishing Option: Bead/Sand Blast, Polishing, Plating, Painting, Powder Coating, Heat Treatment and etc.

tool steel cnc machining and grinding

Brass: Brass is an alloy of copper and zinc, especially metal material with more than 20% zinc content, which is the most commonly used metal material in cnc machining

Finishing Options: Nickel Plating, Bead Blasted, Gold Plating, Silver Plating

Alloy: C360, C260

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brass precision cnc machining

Copper: Copper is a soft, malleable metal with excellent thermal and electrical conductivity, making it an essential material in many industries.

Grade: C10100, C11000, C12200, C14500, C17200 

Finishing Option: Plating, Polishing

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copper cnc machining milling

Titanium:Titanium has a low density and high strength, making it ideal for applications that require a strong yet lightweight material, such as aerospace, automotive, and biomedical industries. It is also highly resistant to corrosion and can withstand exposure to many chemicals and environments

Alloy: Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo, Ti-3Al-2.5V

Finishing Option: Polishing, Anodizing, Sandblasting, Chemical etching, Laser engraving and etc.

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titanium cnc machining at machining services

Titanium: Magnesium is a versatile and lightweight metal with a silvery-white appearance, known for its exceptional strength-to-weight ratio, excellent thermal and electrical conductivity, and widespread use in industries such as aerospace, automotive, and healthcare.

Alloy: AZ31B, AZ91D, We43, AM60B, ZK60A, QE22

Finishing Option: Blasting, Anodizing, Chromate Conversion Coating, Passivation, Powder Coating, Electroplating etc.

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magnesium cnc machined part

CNC Plastics

POM (Delrin/Acetal): High stiffness, good moisture resistance, high wear-resistance, and low friction, easy to machine

Color: White, black, brown

Grade: POM-C, POM-H, UV stabilized POM, Food-Grade POM

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pom delrin acetal cnc machining (2)

PMMA: PMMA is commonly known by the trade name “acrylic” or “plexiglass”. It is a lightweight and shatter-resistant material that is often used as a glass substitute in applications such as skylights, displays, signage, and lenses

Color:  Transparency

Grade: Extruded PMMA, Cast PMMA, Impact-Modified PMMA, UV-Stabilized PMMA, Heat-Resistant PMMA

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pmma acrylic cnc machining services

PEEK: PEEK is a high-performance engineering thermoplastic with excellent mechanical, chemical, and thermal properties, short for Polyether Ether Ketone

Color: Beige with no transparency

Grade: Unfilled PEEK, 30% glass-fiber reinforced PEEK, 30% carbon-fiber-reinforced PEEK, Bearing Grade PEEK

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cnc machined peek parts

ABS: ABS is tough, rigid, and lightweight, making it an excellent material for use in applications such as automotive parts, toys, electronic housings, and consumer goods. It is also resistant to impact, chemicals, and heat, making it a popular choice for use in harsh environments

Color: ABS is naturally opaque and comes in a range of colors including black, white, and gray

Grade: General purpose ABS, Flame retardant ABS, High impact ABS, Heat-resistant ABS

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abs cnc machining

Nylon: Nylon is a strong, durable, and elastic material that is commonly used in textiles like clothing and ropes. Its resistance to abrasion, chemicals, and moisture makes it popular for industrial applications, such as gears, bearings, and automotive components

Color: Nylon is often used in its natural off-white or slightly yellowish color

Grade: Nylon 6, Nylon 6/6, Nylon 11, Nylon 12

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nylon cnc machining

PTFE: PTFE(Teflon) is a high-performance plastic material known for its exceptional chemical resistance, low friction coefficient, and high-temperature resistance

Color: The color of PTFE is typically white or off-white


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cnc machined ptfe teflon plastic parts

PVC: PVC stands for polyvinyl chloride, which is a synthetic thermoplastic polymer that is widely used in various applications. PVC is a versatile material that can be rigid or flexible

Color: clear or opaque


cnc machined pvc plastic components

PEI: PEI has excellent mechanical, thermal, and electrical properties, as well as good chemical resistance

Color: Amber or brownish color

Grade: Unfilled PEI, Glass-Filled PEI, Carbon-Filled PEI, Ultem PEI

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ultem 2300 parts (pei) precision machining

PAI: or Torlon Polyamide-imide, is a type of thermoplastic polymer that is known for its excellent mechanical properties that it maintains over a wide range of temperatures.

Color: Yellow

Grade: Torlon4203, Torlon4503, Torlon4301,Torlon4501

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torlon 4203 cnc milled parts

Gallery of Our CNC machining parts

We machine rapid prototypes and low & large volume production orders for customers in multiple industries: medical devices, aerospace, automotive, defense, electronics, hardware startups, industrial automation, machinery, marine and robotics, and many more.

Surface Finishes for CNC Machined Parts

Apart from custom CNC machining services, we also provide complete surface finishing options for precision machined parts. If you require custom finish not on this list, please do get in touch as it is likely we can source it for you.

as machined (ra 3.2μm ra 126μin)
As machined (Ra 3.2μm / Ra 126μin)

This finishing option with the shortest turnaround time. Parts have visible tool marks and potentially sharp edges and burrs, which can be removed upon request.

smooth machining (ra 1.6μm ra 63μin)
Smooth machining (Ra 1.6μm / Ra 63μin)

Smooth machining is similar to a ‘As machined’ finish, but with less visible machine marks. Parts are machined at a lower feed rate, with no hand polishing.

polishing (ra 0.8μm ra 32μin or better)
Polishing (Ra 0.8μm / Ra 32μin or better)

Polishing is the process of creating a smooth and shiny surface by rubbing it or by applying a chemical treatment.

bead blasting cnc machined parts
Bead Blasting

Machined parts are bead blasted with glass beads which results in a uniform grainy texture and reduced machining marks.

tumble finishing

It is a process that tumbles vibrating media on machined parts to remove sharp edges and burrs.
Tumbling can be used to remove machine marks from exterior surfaces.

bead blasted + anodizing type ii (glossy)
Bead blasted + Anodizing type II

The parts are bead blasted to #120 grit before being anodized type II—ideal for increasing the aluminum part’s corrosion resistance and cosmetic effects. 

bead blasted + anodized type iii (hardcoat)
Bead blasted + Anodized type III (Hardcoat)

The parts are bead blasted to #120 grit before being anodized type III. Type III (Hard Coat) is thicker and adds a wear-resistant layer to Type II’s corrosion resistance, suitable for functional applications.

black oxide cnc machined parts
Black Oxide

Black oxide is a conversion coating that is used on steels to improve corrosion resistance and minimize light reflection.

powder coated
Powder Coated

This is a finish of applying powdered paint to the components and then baking it in an oven, which results in a stronger, more wear- and corrosion-resistant layer that is more durable than traditional painting methods. 

chromate conversion coating (alodinechemfilm)
Chromate Conversion Coating

Chromate conversion coating is used to improve the corrosion resistance of aluminum and aluminum alloys while keeping their conductive properties. It is also applied as a base layer prior to priming and painting parts.

nickel plating

Include Nickel Plating, Silver Plating, Gold Plating, Zinc Plating, Chrome Plating, Tin Plating and etc, it is ideal to reduce corrosion, improve the appearance and function of solderability and electrical conductivity.

dlc coating parts
DLC (Diamond-Like Carbon) Coating

DLC (Diamond-Like Carbon) coating is a hard, wear-resistant coating made of a carbon-rich material that exhibits some of the properties of diamonds.

*Other surface finishes are also available. Learn more about our metal and plastic surface finishing capabilities here.

What is CNC Machining?

CNC machining is a widely used manufacturing process that automates the creation of designs from metal or plastic stock using high-speed cutting tools. Standard CNC machines include 3-, 4-, and 5-axis milling machines, lathes, and routers, with variations in how parts are cut. Workpieces may be stationary while the tool moves, the tool may stay put while the workpiece is rotated and moved, or both the tool and workpiece may move in unison.

Skilled machinists program CNC machines based on CAD models to cut precise and repeatable tool paths for custom parts. CNC machining works with almost any metal or rigid plastic, making it suitable for industries from aerospace to electronics. AT-Machining provides custom CNC services for over 50 materials, from commodity aluminum to advanced titanium and engineered plastics like PEEK and Ultem 2300.

Advantages and Challenges of CNC Machining?

Why Choose AT for Custom CNC Machining?

Saving Your Cost

You will save 30-50% of the cost because of our efficient production capacity and cost control.

Quality Assurance

As an ISO 9001:2015 certificated manufacturing company, we offer SGS, RoHS, material certifications, and inspection report for our customers.

On-demand Production

Our CNC milling services will support you from 1 pcs to 10k+ pcs, no matter prototype, low volume manufacture, or mass production.

High Precision Tolerances

Offering tolerances range from +/-0.001′′ to 0.005′′, depending on client specifications. We are experts in producing custom components.

Material Selection

Choose from 50+ engineering-grade plastics and metals, including ABS, polycarbonate, nylon, PEEK, aluminum, stainless steel, platinum, and copper for diverse part applications and industries.

Fast and Reliably Delivery

Experience dependable and punctual delivery of your products from our CNC facility strategically located in Shenzhen, China, near major shipping ports for seamless transportation and peace of mind.

CNC Machining FAQs

Do you have a minimum order quantity?

NO! – No minimum quantity! AT Machining provides rapid prototypes and short to medium-run production machining services.

What type of design files does AT Machining accept for quoting?

For the 3D drawing, we would prefer STEP, IGES, or X_T format. For the 2D drawing, we would prefer PDF format there are tolerances with the dimensions if possible.

How can I pay AT Machining?

AT Machining accepts payment in two ways: 1. Bank to bank wire transfer 2. PayPal

What general tolerances can AT Machining achieve?

General CNC Machining Tolerances on metal to +/- 0.005" (+/- 0.127 mm) following ISO 2768 unless otherwise specified. CNC Plastics and composites will be +/- 0.010”(+/- 0.254 mm).

What precision tolerances can AT Machining achieve?

CNC Precision Machining Tolerances down to ±.0002" (0.005mm). AT can manufacture and inspect to tight tolerances per your drawing specifications.

How quickly can I get my parts?

Lead times are 2 to 3 weeks for prototypes and 4 weeks for production runs. Emergency and rush services are available.

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