Stockton’s Superior Metal Fabricator & Machine Shop since 1976

On-Site Building

From a complex plant shutdown for required maintenance, to simple routine facility improvements, STI’s experienced field personnel supports our customers quickly with efficient solutions.

STI has completed numerous field projects throughout the San Joaquin Valley, and we have successfully increased plant availability by reducing downtime.

Our quality, on-time work – coupled with our unique ability to support projects with shop prefabrication of piping, structural steel assemblies and machined parts – sets us apart from other field erection companies.


Our TWIC certified crew enables us to work at all T.S.A. controlled ports.

Crane and Rigging Services
To support projects, STI provides experienced operators, riggers, millwrights and iron workers to safely place or move heavy equipment.
• Mobile Cranes – 12, 15 and 25 Ton
• Man Lifts – 30’, 40’, 60’ and 110’

Contact STI About Our Support Services
• Structural Steel Design and Detailing
• Mechanical Design
• Machine Design
• AutoCAD® Drafting