Precision Machining Services for Diverse Industries | Sienna Corporation

Sienna’s latest manufacturing technologies including 5-axis machining, provides customers with the most advanced precision machining capability. Our facility in Chennai, India, manufactures high complexity machined components for Aerospace, Railway, Healthcare, Power, and other industrial systems.

Our customers benefit from a comprehensive machining service for highly complex systems including small, medium, and large format precision machining combined with turning, milling and post machining processing services.

For aerospace customers, we manufacture parts for commercial engines, seating as well as components for lighting and cargo systems.

Sienna manufactures precision machined components for specialized locomotive braking systems. We manufacture bearing caps, rings, retainers, spacers, flanges, brackets and manifolds from materials such as steel forgings, aluminium extrusions and hot-rolled steel plates. We use special stainless steels & heat-resistant steel alloys & manufacture parts that go into high performance gas turbines and related power equipment.

Combining precision machining services with welded frame manufacture, enclosure fabrication and systems integration provides an end-to-end integrated manufacturing service.


  • CNC Turning
  • CNC Milling
  • CNC Welding
  • In-house special processing including powder coating, welding, EDM wire cut
  • In-house tool design and development
  • Reverse engineering
  • Expertise with exotic material


  • ISO 9001:2015 Certified
  • AS9100 Rev D
  • CEMILAC – Govt. of India has approved and certified welding process (TIG and resistance) for combustion liner parts
  • NADCAP certification for welding operations