Cal Steel Group is the light gauge steel, modular & structural production arm of TESH Group
A TESH Group Company Request a Quote
Scope: Full stack
Fab // Panelize // Erect
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The full steel delivery stack, in-house.

From engineering and owned fabrication through field erection, Cal Steel Group designs, manufactures, and builds in light gauge steel, modular volumetric, and structural steel systems, across California.

Core capabilities

Three production lines. One steel platform.

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Light gauge steel panelized structure in Cal Steel's factory

Light Gauge Steel (LGS)

Our core. Precision cold-formed steel framing, panelized systems, and trusses, roll-formed in-house and erected on site by our own crews.

  • Studs, tracks, panels & trusses
  • Vertex BD digital-twin engineering
  • Full on-site erection & framing
Explore Light Gauge Steel
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Modular volumetric

Modular & Volumetric

Pre-engineered modules built off-site in controlled conditions, cutting cost 20 to 40% and build time 30 to 50% versus conventional construction.

  • Panelized & volumetric units
  • Housing, classrooms, offices
  • Master coil to finished box
Explore Modular & Volumetric
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Red oxide-primed structural steel building frame of wide-flange beams and columns

Structural Steel · Support

The force multiplier. In-house structural steel and engineering for when projects go higher or need lateral and seismic reinforcement, with AWS D1.1 certified welding.

  • Fabrication & field erection
  • Beams, columns, base plates, mezzanines
  • Certified welding & rigging crews
Explore Structural Steel
How we work

Engineering to erection, under one accountable team.

We are not a panel-only supplier. Cal Steel carries projects from the digital model through full on-site erection and framing.

01

Engineering & BIM

3D structural models and connection design in Vertex BD, AutoCAD, and Revit, ready for production.

02

Owned Fabrication

Structural steel fabrication and CNC roll-formed LGS, master coil to finished assembly, in our facility.

03

Panelization & Modules

Panelized walls, floor and roof systems, and complete volumetric modular units.

04

On-Site Erection & Framing

Our own ironworkers and crews erect, install, and frame on site, with full GC support when needed.

Supporting services

The full toolkit behind every build.

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Structural Detailing

Shop and erection drawings, connection design, and fabrication-ready models for every member.

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BIM & Coordination

3D coordination across trades in Vertex BD, Revit, and AutoCAD before any steel is cut.

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Value Engineering

Member sizing, system selection, and constructability reviews that protect budget and schedule.

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Miscellaneous Metals

Stairs, railings, embeds, ladders, and plate work fabricated alongside the primary structure.

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Solar Racking Systems

Roof and ground-mount steel racking fabricated to engineered solar layouts.

AWS D1.1
Certified structural steel welding by qualified ironworkers.
AISI S240 / S100
Cold-formed steel framing engineered to the governing standards.
ICC-ES listed
Code-recognized light gauge steel components per the California Building Code.
LA City Approved
Approved fabricator and erector of steel and modular systems.
Owned off-site fabrication

From master coil to finished modular unit.

A 100,000 square foot facility in Van Nuys and manufacturing in Tecate give the platform an owned production base, slitting master coil into LGS, roll-forming profiles, panelizing walls, and assembling complete volumetric units.

Tour the Factory →
Cal Steel fabrication facility
Start your project

LGS, modular, or structural, we can build it. Let's talk.