MSI workers and cranes at the installation site for a large steel structure.

MSI Structural Steel is your turnkey source for all

Structural steel fabrication and erection projects.

Our corporate headquarters and shop is strategically located in South Gate, California 12 miles south – east of Los Angeles, with convenient access to all major Los Angeles area freeways.

We have been serving the Los Angeles metropolitan area since 1962.

California Department of Consumer Affairs Contractors state License

Board # 953753, C- 51 Structural Steel Fabrication and Steel Erection.

  • 200 Employees
  • 90,000 square foot steel fabrication shop
  • Beam Lines
  • Plate fabricators.
  • 4 Tractors with 40 foot trailers.
  • Turn key Detailing
  • Latest 3D Software

We have years of experience in a wide range of Structural Steel Fabrication and Steel Erection projects.

Commercial Office and Commercial Centers

Metal Building Erection

Apartments / Condominiums

Large Residential Homes

Industrial Buildings

School and University Buildings


Government and Military buildings