Get a quote for your metal or plastic CNC machined parts




CNC Machining Materials
We work with a wide array of CNC materials, including both metals and plastics. Choose from aluminum, steel, brass, and more for your custom CNC machined parts.
Metals |
Characteristics |
Model |
Aluminum | lightweight yet strong, with excellent machinability and corrosion resistance. Ideal for aerospace and automotive parts. | 6061,6061-T6,2024,5052,5083, 6063,6082,7075,7075-T6,ADC12 (A380),A356 |
Copper | superior electrical conductivity and thermal properties, making it perfect for electrical components and heat exchangers. | Copper C101(T2), C103(T1), C103(TU2), C110(TU0), Beryllium Copper. |
Brass | Brass is durable and has a low friction coefficient, which makes it suitable for fittings, tools, and musical instruments that require precision. | Brass C27400, Brass C28000, Brass C36000 |
Bronze | Bronze is highly resistant to corrosion and metal fatigue, favored for bearings, bushings, and marine hardware. | Tin Bronze |
Steel | Steel is an alloy with high tensile strength and durability, commonly used in construction and automotive industries for its robustness. | Steel 1018, 1020, 1025, 1045, 1215, 4130, 4140, 4340, 5140, A36,Die steel, Alloy steel, Chisel tool steel, Spring steel, High speed steel, Cold rolled steel, Bearing steel, SPCC. |
Stainless steel | Stainless steel is renowned for its corrosion resistance, making it a prime choice for medical devices and food processing equipment. | Stainless Steel SUS201, SUS303, SUS 304, SUS316, SUS316L, SUS420, SUS430, SUS431, SUS440C, SUS630/17-4PH, AISI 304 |
Magnesium | Magnesium is the lightest structural metal, offering high strength-to-weight ratios, perfect for automotive and aerospace applications where weight is critical. | Magnesium Alloy AZ31B, Magnesium Alloy AZ91D |
Titanium | Titanium boasts the highest strength-to-density ratio among metals, highly resistant to corrosion and fatigue, ideal for aerospace, medical, and marine applications. | Titanium Alloy TA1, TA2, TC4/Ti-6Al 4V |
Plastics: Such as: ABS/ Polycarbonate/ PMMA/ POM/ Nylon/ Polypropylene/ PEEK/ Polypropylene/ HDPE/ HIPS/ LDPE.
ABS | ABS is strong, durable, and offers good resistance to heat and impact. It’s preferred for automotive components and consumer goods. | ABS Beige(Natural), ABS Black, ABS Black Antistatic, ABS Milky White, ABS+PC Black, ABS+PC White |
Polycarbonate | Polycarbonate is extremely durable and has high impact resistance, along with excellent clarity, used for bullet-proof glass and protective gear. | PC Black, PC Transparent, PC White, PC Yellowish White, PC+GF30 Black |
PMMA | PMMA, or acrylic, is known for its crystal clarity and weather resistance, making it ideal for outdoor fixtures and display cases. | PMMA Black, PMMA Transparent, PMMA White |
POM | POM is strong, with a low friction surface and good dimensional stability, perfect for precision parts in mechanical applications. | Dark brown (coffee) POM 100AF, POM Black, POM Blue, POM White |
Nylon | Nylon is versatile, strong, and wears well against friction, commonly used for gears, bearings, and other wear-resistant surfaces. | PA(Nylon) Blue, PA6 (Nylon)+GF15 Black, PA6 (Nylon)+GF30 Black, PA66 (Nylon) Beige(Natural), PA66 (Nylon) Black |
Polyethylene | Polyethylene is lightweight and has high resistance to impact, widely used in packaging and containers. | PE Black, PE White |
PEEK | PEEK is renowned for its high temperature resistance and strength, often used in aerospace and medical implant manufacturing. | PEEK Beige(Natural),PEEK Black |
Polypropylene | Polypropylene is tough, has excellent chemical resistance, and is used for automotive parts, containers, and in packaging. PP Black, PP White, PP+GF30 Black | PP Black, PP White, PP+GF30 Black |
HDPE | HDPE is known for its high strength-to-density ratio, resistance to impacts, and is used in making bottles and corrosion-resistant piping. | HDPE Black, HDPE White |
HIPS | HIPS is easy to machine and offers good dimensional stability and impact resistance, suitable for prototyping and modeling. | HIPS Board White |
LDPE | LDPE is soft, flexible, and used in applications where heat sealing is required, such as in tubing and plastic bags. | LDPE White |
PBT | PBT is a strong, rigid plastic that is heat resistant and commonly used in electrical components and casings. | PBT Black, PBT Milky White(Natural) |
PVC | PVC is robust, cheap, and has good chemical resistance, used in plumbing, medical devices, and cables. | PVC Grey |
PET | PET is strong, resistant to moisture and chemicals, and widely used in food containers and textile fibers. | PET Black, White, PET+GF30 Black, PET+GF30 White |
CNC Machining Surface Finishes
Achieve the perfect finish with our range of surface treatments. Whether you require anodizing, plating, or painting, we ensure your parts meet both aesthetic and functional specifications.

As machined finish leaves the surface straight from the CNC machine, providing a cost-effective option with tool marks.


Polishing achieves a high gloss finish, reducing surface roughness and enhancing the aesthetic appeal of metals.


Tumbling smooths and polishes small parts by friction and abrasion in a barrel, offering a consistent but slightly textured finish.

Electropolish is a chemical process that smooths and brightens surfaces while improving corrosion resistance.


Alodine coating provides corrosion protection and improves paint adhesion, mainly used on aluminum surfaces.

A brushed finish creates a unidirectional satin texture, reducing the visibility of marks and scratches on the surface.

Powder coating applies a thick, wear-resistant layer with excellent color and texture options, suitable for a variety of surfaces.


Black oxidize is a conversion coating for ferrous metals that improves corrosion resistance and minimizes light reflection.
Tolerances for CNC Machining
Our CNC machines operate with precision tolerances that meet industry standards, ensuring that every part is consistently accurate and fits perfectly with other components.
General Tolerances | Metals : ISO 2768-m, Plastics : ISO 2768-c |
Precision Tolerances | Zhonghui can manufacture and inspect parts with strict tolerances according to your drawing specifications and GD&T annotations, including tolerances tighter than +/- 0.001 inches. |
Min Wall Thickness | 0.5mm |
Min End Mill Size | 0.5mm |
Min Drill Size | 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 | Prototoyping: 1-100 pcs,Low volume: 101-10,000 pcs,High volume: Above 10,001 pcs |
Lead Time | 7 bussiness days for most projects.Delivery of simple parts can be as fast as 5 day. |
CNC machining solutions
A, Rapid Prototyping
B, Low and High-Volume Production
CNC Machining for Various Industries
Zhonghui’s CNC machining services cater to a wide range of industries, from Communication to New Energy, ensuring that every sector’s unique requirements are met with precision.

Why Choose Zhonghui
Zhonghui was founded in 2009 by Mr Huang, with over 20 years of combined professional experience in Aluminum/Zinc die casting and CNC machining in Dong Guan of China. In 2021, we launched injection molding and sheet metal fabrication services. Zhonghui provides highly trained engineers to support your project. We are ISO 9001: 2015 and ITAF16949:2016 Accredited.
From Prototyping to Production
1.Rapid Prototypes