Whatever your business’s metal fabrication requirements, MSI Inc. can deliver the products and services you need, from minor steel fabrication pieces to large structural steel pieces. As full-service metal fabricators and metal distributors, MSI has the highest commitment to precision, quality control, and on-time delivery. Everyone on our team has been certified to AWS D:1.1 level by the City of Los Angeles, and our more than 25 welders and fitters have an impressive track record for quality and dependability. Whatever the size of your project, turn to our experienced fabrication specialists for outstanding products and services.

Quality Assurance and Quality Control

Quality assurance is the process for ensuring quality of process in developing products, and quality control is the process for ensuring the quality of the actual products. MSI Inc. uses state-of-the-art quality assurance and quality control measures, and is certified by the American Institute of Steel Construction (AISC), the City of Los Angeles and American Welding Society (AWS D1.1). Our in-house detailing staff has the tools and resources necessary to ensure the highest-quality work with every project.

With leading metal fabrication software, including 3D modeling and remote viewing capability, our skilled team members fulfill their commitment to quality and efficiency every day. Furthermore, our aluminum and steel fabrication processes include the best in inspection and tracking equipment to ensure that every metal product and every service rendered meets only the highest levels of quality.

Wide-Ranging Experience

MSI Inc. is a leading metal services provider in Southern California. Our expertise and experience with a wide range of project types and sizes makes us the perfect choice for your metal fabrication needs.

Steel suppliers & fabricators are not all alike. MSI has experience in fabricating:

  • Structural steel framing
  • Stainless steel fabrication
  • Pipe supports
  • Conveyors
  • Skid weldments
  • Hoppers
  • Pipe fabrication and spooling
  • Catwalk fabrication
  • Stairs and ladders
  • Service platforms
  • Rebar cages
  • …and anything else your next project demands

Our extensive inventory located in our massive 75,000 square foot facility allows us to work quickly without having to wait for materials. Whatever the size or nature of your project, MSI Inc. is the place to turn.

In-House Detailing of Shop Drawings

The in-house detailing team at MSI uses powerful tools like AutoCAD and Tekla 3-D modeling to document every design to the requirements of the client. Our detailing team works closely with clients, discussing needs and ensuring a clean transition from construction design drawings to detail shop fabrication drawings. Because of our detailing team’s expertise, you won’t have the hassle of trying to find these services elsewhere. The result is a more controlled, cost-effective and time-efficient fabrication project.


At MSI, our automation equipment allows us to stand out among metal fabricators in Southern California. Among our automation equipment, we have a state-of-the-art, fully-automated and integrated CNC inline drill, saw, and coping unit. This FICEP Beamline unit processes beams, channels, angles and even sections, whether of small or large dimensions. With our “direct to line” capability, we can seamlessly transfer all tubing dimensioning from client-approved shop drawings to product, for error-free production.

MSI has been among the leading metal distributors in Southern California since 1961, and we value our relationship with each and every client. Visit our Industry Client page to view a list of industries that entrust MSI to provide quality products and customer service.

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We are confident that once you familiarize yourself with MSI Inc.’s capabilities and track record, you will want to make us your partner for your next project. We invite you to browse our Gallery page of completed products and download our catalog, either in full or by section.