Structural steel
Structural steel, fabricated to plan and built to hold.
We cut, form, and erect structural steel for marine, industrial, and municipal projects — the same trade we practice on ship structures, applied to buildings and public works. The City of Vista trusted us with the structural repair of The Wave Water Park; your mezzanine is in good hands.
From engineered drawings or from a problem that needs solving, we fabricate in our Chula Vista shop and install on your site with MIG (GMAW) and flux-core (FCAW) procedures.

Structural work we handle
- Beams, columns, and load-bearing repairs
- Stairs, platforms, and mezzanines
- Handrails and guardrails — code-compliant, commercial and municipal
- Equipment frames and supports
- Municipal and public-works structures
Why builders call Nautilus
FCAW and GMAW certified procedures
Shipyard-grade fit-up and documentation
Municipal past performance — City of Vista, City of San Diego
Fabricate in-shop, install on-site
Frequently asked questions
Do you work from engineered drawings?+
Yes — we fabricate to stamped drawings and specs, and can also assist on design for repair work. Every weld is documented.
Can you repair a cracked structural beam on-site?+
Yes. Our mobile rigs handle on-site structural repair, including emergency response — see the mobile welding page.