Structural Steel Supplier in Orange County & Southern California
W-Beams, channels, angles and flat bar, supplied to ASTM specifications, cut to length and delivered to your shop or job site.
Or call (949) 200-3797

At a glance
- Shapes
- W-Beams, channels, angles and flat bar
- Grades
- A992
- A36
- A572 Gr. 50
- Processing
- Cut, drilled, coped, punched and galvanized
- Galvanizing
- ASTM A123
Mona Steel supplies structural steel to fabricators, erectors, contractors and OEMs across Southern California. Order random lengths or have your material cut, drilled, coped, punched and galvanized before it ships.
Every order comes with mill test reports, and our team can help you find the most cost-effective section for the load.
Structural steel we supply
W-Beams (wide flange beams)
The workhorse of steel construction, for beams, columns and solar piles.
- A992
- A572 Gr. 50
Channels (C & MC)
Standard and miscellaneous channels for framing, lintels and equipment.
- A36
- A572 Gr. 50
Angles
Equal- and unequal-leg angles for bracing, clips, frames and supports.
- A36
- A572 Gr. 50
Flat bar
Hot-rolled flat bar for stiffeners, straps, base plates and fabrication.
- A36
Weathering steel
Atmospheric corrosion-resistant shapes and plate for exposed structures.
- A588
Specifications & standards
| W-Beams | ASTM A992 / A572 Grade 50 |
|---|---|
| Channels, angles, bar | ASTM A36 / A572 Grade 50 |
| Weathering steel | ASTM A588 |
| Dimensions & tolerances | ASTM A6 |
| Hot-dip galvanizing | ASTM A123 |
Mill test reports are provided with every order. Other grades and sizes are available on request.
Processing before delivery
Save shop hours and crane time by ordering structural steel ready to install:
- Cut to length and mitered
- Holes, slots and copes laser or plasma cut
- Hot-dip galvanized per ASTM A123
- Bundled and tagged by piece mark
Structural Steel FAQ
What grade are your W-Beams?
W-Beams (wide flange beams) are typically supplied to ASTM A992, the standard specification for structural W-Beams in U.S. building construction. A572 Grade 50 is also available.
Can you galvanize structural steel?
Yes. We can deliver structural members hot-dip galvanized per ASTM A123, which is recommended for exposed and coastal installations.
Request a quote
Request pricing on structural steel
We take DXF, DWG and STEP files, dimensioned PDFs and bills of material. Our estimating team reviews every request and comes back with an itemized quote.
- DXF
- DWG
- STEP
- XLS/CSV