Custom Stainless Steel Machining
Quick Specifications
Material
Stainless Steel (304, 316, 17-4 PH)
Process
CNC Machining
Tolerance
±0.005mm
Lead Time
3-7 days
MOQ
1 piece
Surface Finish
Polished, Passivated, Bead Blasted
Product Overview
Sinbo Precision offers comprehensive custom stainless steel machining services with state-of-the-art CNC equipment. Our expertise spans all major stainless steel grades including 304, 316, 17-4 PH, 303, and 416, enabling us to deliver precision components for diverse industrial applications. With years of experience in stainless steel machining, we understand the unique challenges and requirements of working with this versatile material.
Our advanced CNC machining capabilities include 3-axis, 4-axis, and 5-axis milling, as well as precision turning operations. We maintain tight tolerances of ±0.005mm and offer a wide range of surface finishes including polished, passivated, bead blasted, and electropolished options. Our engineering team provides expert design for manufacturing (DFM) support to optimize your parts for production efficiency and cost-effectiveness.
We serve industries ranging from aerospace and automotive to medical devices and food processing equipment. Our China factory ensures fast delivery with typical lead times of 3-7 days. Whether you need prototype quantities or high-volume production runs, we deliver consistent quality with ISO 9001, IATF 16949, and ISO 14001 certified processes.
Technical Specifications
| Material Grades | 304, 316, 17-4 PH, 303, 416, 420, 440C Stainless Steel |
| Process | CNC Milling, CNC Turning, 5-Axis Machining, Swiss Turning |
| Tolerance | ±0.005mm (±0.0002") |
| Surface Finish | Polished (Ra 0.8), Passivated, Bead Blasted, Electropolished |
| Size Range | Up to 500mm x 500mm x 500mm (19.7" x 19.7" x 19.7") |
| Lead Time | 3-7 days (standard), 24-48 hours (express) |
| MOQ | 1 piece (prototypes), 100 pieces (production) |
| Certifications | ISO 9001, IATF 16949, ISO 14001, SA 8000 |
Stainless Steel Grades We Machine
304 Stainless Steel
Excellent corrosion resistance and formability. Ideal for food processing, medical devices, and general industrial applications.
- • Non-magnetic
- • Good weldability
- • High ductility
316 Stainless Steel
Superior corrosion resistance, especially against chlorides. Perfect for marine, chemical processing, and pharmaceutical industries.
- • Marine-grade
- • Chemical resistant
- • High temperature strength
17-4 PH Stainless Steel
Precipitation hardening stainless steel with exceptional strength and hardness. Used in aerospace, automotive, and oil & gas applications.
- • High strength
- • Hardness up to HRC 45
- • Good corrosion resistance
303 Stainless Steel
Free-machining stainless steel with excellent machinability. Suitable for high-volume production of complex parts.
- • Excellent machinability
- • Good corrosion resistance
- • Non-magnetic
416 Stainless Steel
Martensitic free-machining stainless steel with high strength. Ideal for valve components, pump parts, and fasteners.
- • High strength
- • Excellent machinability
- • Magnetic
420/440C Stainless Steel
High-carbon martensitic stainless steels with excellent hardness. Used for cutting tools, bearings, and surgical instruments.
- • High hardness
- • Wear resistance
- • Heat treatable
Applications
Aerospace
Aircraft components, engine parts, structural brackets, and fasteners requiring high strength and corrosion resistance
Automotive
Engine components, transmission parts, exhaust systems, and precision fasteners for automotive applications
Medical
Surgical instruments, implantable devices, diagnostic equipment, and medical device components
Food Processing
Food processing equipment, beverage components, sanitary fittings, and packaging machinery parts
Chemical Processing
Valves, pumps, reactor components, and piping systems for chemical and pharmaceutical industries
Marine
Marine hardware, boat fittings, propulsion components, and offshore equipment parts
Manufacturing Capabilities
CNC Machines
Precision Tolerance
Fast Delivery
Years Experience
Quality Assurance
ISO 9001:2015
IATF 16949:2016
ISO 14001:2015
SA 8000:2014
Frequently Asked Questions
What is the minimum order quantity?
We accept orders from 1 piece for prototypes and small batches. For production runs, our typical MOQ is 100 pieces, but we can accommodate lower quantities depending on complexity and requirements.
What is the typical lead time?
Standard lead time is 3-7 days for most orders. We also offer express service with 24-48 hour turnaround for urgent projects. Lead times may vary based on part complexity, quantity, and current production schedule.
What file formats do you accept?
We accept STEP, IGES, STL, DXF, DWG, and PDF files. 3D CAD files in STEP or IGES format are preferred for complex parts. 2D drawings in DXF, DWG, or PDF format are acceptable for simpler components.
Do you provide design for manufacturing (DFM) support?
Yes, our engineering team provides free DFM analysis and suggestions to optimize your design for manufacturing. We review your design for manufacturability, cost-effectiveness, and performance requirements before production begins.
What surface finishes are available for stainless steel parts?
We offer various surface finishes including polished (Ra 0.8 or better), passivated for enhanced corrosion resistance, bead blasted for matte finish, and electropolished for ultra-clean surfaces. We can also provide custom finishes based on your specific requirements.
Related Products
316 Stainless Steel Precision Components
Marine-grade stainless steel for harsh environments
Learn More →
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