What We Offer

We provide quality products and professional services

About Us

As a leading custom aluminum die caster, SEI aluminum metal castings technology offers a unique combination of capabilities producing product in all aluminum and zinc alloys. Working smarter to produce both the easy and most difficult products in Aluminum and Zinc, SEI is your best selection for any die casting project. Irrespective of the need for large or small quantity, selection of alloy, component type, degree of difficulty or finish selection aluminum and zinc die casting by SEI is the better selection.

SEI can lower the manufacturing cost of your product. We specialize in prototyping and short-run casting orders, a job is considered a short-run casting whenever the cost of the die is greater than the cost of the casting production. The processing of short-run casting orders requires operation efficiency, designed to reduce setup time and costs. SEI specializes in providing die casting production for quantities from the a thousand to hundreds of thousands and larger. Small job quantities vary, but are generally less than 5,000 parts, and may even be as low as fewer than hundreds of parts.

Quality Manufacturing

Our manufacturing expertise and turnkey capabilities cover design and manufacturing from the start with raw aluminum ingots to the finished product including Chemical Film and Powder Coating Finishes:

  • Design using state of the art computer 3D software tools that create molds and tooling
  • Metal flow simulation
  • Thermal Analysis
  • Post Casting machining of all normally required secondary operations
  • Metal Chemical Film Treatments
  • Powder Coating of finished product
  • A Tradition of Excellence
SEI Sales and Engineering
USA: SEI Sales and Engineering
SEI Manufacturing in China
China: Manufacturing

Exceptional Design

With our veteran design and engineering team, you can be sure your custom designed product will meet your specific program requirements. SEI Castings products are warranted to meet applicable product specifications and to be produced. Our warranty covers parts and labor but excludes products which have been abused. If product service is required, simply contact SEI Castings Sales for immediate response. With extensive design experience, proven manufacturing techniques and a┬ástrong commitment to customer satisfaction, at SEI Castings we produce the highest quality and most reliable products possible. Your needs are always our #1 priority. We welcome the opportunity to address your specific requirements. In Today’s environment of evolving technology demands, it is critical that design cycle times match these fast-changing requirements. Our organization is structured and prepared to meet your quick-response requirements. SEI Castings will provide prompt response to requests and new specifications. Your designs will be developed to meet the highest quality standards with state-of-the-art CAD/CAM software.

SEI founders and each employee have a commitment to excellence and a willingness to do whatever it takes to provide service and complete customer satisfaction.

Flow Chart / Presentation

SEI-Tianle manufacturing flow chart

SEI-Tianle Presentation r7

Do you have a project?

Request a quote or give us a call!

Contact Us

SEI Castings
555 Mayock Road
Gilroy, CA, 95020 USA
Phone: 408-622-4887

Looking for Microwave or RF Products. You came
to the right place! To see how we can help, click

Contact Us

SEI Castings
555 Mayock Road
Gilroy, CA, 95020 USA
Phone: 408-622-4887

Looking for Microwave or RF Products. You came to the right place! To see how we can help, click below.