CNC Machining
We leverage an extensive lineup of over 100 advanced CNC Mills, Lathes, EDMs and Surface Grinding machines to deliver precision-engineered custom parts for a multitude of industries.
CNC 3 & 5 axis milling
Size Metric units Imperial units
Max. part size (LWH) 1300 x 700 x 650 mm 51.2 x 27.6 x 25.6 in
Min. feature size Ø 0.50 mm Ø 0.019 in
CNC turning
Size Metric units Imperial units
Max. part size (LxD) 1200 x Ø630 mm 47.2 x Ø24.8 in
Min. feature size Ø 0.50 mm Ø 0.019 in
Post Processing
“Enhance the quality of your machining products with our professional post-processing services, ensuring impeccable finishes and optimized functionality.”
• Deburring: Sand Blasting, Tumbling, Nitrogen Deburring，Abrasive Flow Machining (AFM).
• Cleaning: Ultrasonic Cleaning
• Surface Treatment: Polishing, Plating, Anodization, Alodine, Spraying/Coating
• Heat Treatment: Aging, Tempering, Quenching, Cryogenic Treatment, Nitriding, & etc.
• Welding
• Sub-Assembly
Chemical Treatment Finishing To enhance part’s durability, thermal stability, conductivity level and lifespan.
Material Compatibility Colour Description
Anodizing Aluminium, titanium Gold, red, blue, black, clear, etc. Increase surface hardness, wear resistance and the lifespan of metals like Aluminium.
Alodine Aluminium Clear, yellow Chromate conversion coating applied to improve corrosion resistance and help preserve electrical conductivity.
Black Oxide Steel, copper, aluminium, etc. Heavy black Improve corrosion resistance and minimize light reflection.
Electroplating Metals & plastics Metallic Chrome, zinc, nickel, etc electroplating for decorative or maintenance purposes.
Electroless Nickel Plating Steel, stainless steel, copper, etc. Silver white semi-bright Smooth and uniform coating that offers very good wear, abrasion and corrosion resistance.
Passivation Stainless steel Very light blue Enhance corrosion resistance of CNC stainless-steel parts.
Prototyping
“Transforming concepts into reality with exceptional accuracy and swift turnaround times.”
Raw Material for Machining

Copper Alloy : CuBe2, QSn6.5-0.1/QSn4-3, CuSn4Zn4Pb4, Brass, Copper
Magnetic Steel : 45#, P20, SKD11, SUS420, SUS440, & etc.
Stainless Steel : SUS300, SUS303, SUS304, SUS316, SUS316L, & etc.
Titanium Alloy : TC4, TC6, & etc.
Aluminum Alloy : 6061, 2A12, 7075, & etc.
Special Alloy : Kovar, Inconel, Monel, Invar, 4J29, 4J50, 4J36, & etc.
Plastic : PEEK, PTFE, POM, ABS, PVC, PP, PU, HDPE, & etc.

** Including forging and casting blank **
Mechanical Treatment Finishing To create various surface textures and colours to the part.
Material Compatibility Colour Description
Tumbling Metals & Plastics N/A Tumbling adds a uniform matte or satin surface finish. It's great for removing tool marks and surface contaminants.
Brushing Metals N/A Brushing is produced by polishing the metal grit resulting in a unidirectional satin finish.
Powder Coating Metals Paint colours Powder coating is a dry finishing process that results in a smooth finish and creates a hard finish that is tougher than conventional paint.
Polishing Metals & plastics N/A Polishing helps to create smooth and slight reflective surface CNC parts.
Sandblasting Metals & plastics N/A Sandblasting adds a uniform matte or satin surface finish. It’s mainly used for visual purposes and comes in several different grits.
Spray Painting Metals & plastics Paint colours Spray painting is a great way to add colour. It is more durable and provides a more even surface than traditional painting.
Copyright © Shenzhen Chengyu Precision Machinery Co., Ltd. All Rights Reserved.