Custom Stainless Steel Machining - Precision CNC Parts
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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 USA warehouse 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

150+

CNC Machines

±0.005mm

Precision Tolerance

3-7 Days

Fast Delivery

20+

Years Experience

Quality Assurance

ISO 9001:2015 Certification

ISO 9001:2015

IATF 16949:2016 Certification

IATF 16949:2016

ISO 14001:2015 Certification

ISO 14001:2015

SA 8000:2014 Certification

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

304 Stainless Steel CNC Parts

304 Stainless Steel CNC Parts

Excellent corrosion resistance for general applications

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316 Stainless Steel Precision Components

316 Stainless Steel Precision Components

Marine-grade stainless steel for harsh environments

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17-4 PH Stainless Steel Parts

17-4 PH Stainless Steel Parts

High-strength precipitation hardening stainless steel

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Medical Grade Stainless Steel Parts

Medical Grade Stainless Steel Parts

Biocompatible stainless steel for medical devices

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