O&S WeldingFabrication LLC
Professional Welding, Custom Fabrication & Manufacturing Services in Chicago
Licensed & insured experts offering 10+ welding processes, mobile services, AutoCAD design, and high-volume manufacturing for residential, commercial, and industrial projects.
Completed Projects & Portfolio
Explore our diverse range of welding and fabrication projects across residential, commercial, industrial, and automotive sectors.
Structural Steel Welding
Custom Metal Fabrication
Industrial Welding Project
Steel Beam Welding
Pipe Welding Work
Metal Staircase Fabrication
Handrail Welding
Gate Fabrication
TIG Welding Aluminum
Truck Frame Repair
Trailer Hitch Welding
Exhaust System Fabrication
Roll Cage Welding
Steel Frame Construction
Metal Rack Fabrication
Custom Bracket Welding
Precision TIG Work
Welding & Fabrication in Action
Watch professional welding techniques and custom fabrication processes.
Precision TIG Welding Process
Structural Steel Fabrication
Custom Metal Work Process
Comprehensive Welding & Fabrication Services
From precision TIG welding to large-scale manufacturing, we handle projects of all sizes with expert craftsmanship and cutting-edge techniques.
GMAW (MIG Welding)
High-speed, versatile gas metal arc welding for steel, stainless steel, and aluminum projects.
- Fast production
- Clean welds
- All positions
GTAW (TIG Welding)
Precision tungsten inert gas welding for high-quality, aesthetic welds on thin materials.
- Precision work
- Clean finish
- Exotic metals
FCAW (Flux-Core Welding)
Robust flux-cored arc welding ideal for outdoor and windy conditions, thick materials.
- Outdoor capable
- Deep penetration
- Heavy-duty
SMAW (Stick Welding)
Reliable shielded metal arc welding for structural, repair, and field applications.
- Field ready
- All-weather
- Structural
Plasma Cutting
Precise plasma cutting services available by special appointment for complex cuts.
- By appointment
- Complex cuts
- Various metals
Mobile Welding & Cutting
We bring our equipment to your location for on-site welding and cutting services.
- On-site service
- Same-day available
- Emergency repairs
Structural Repairs
Large and small structural repairs, building reinforcement, and support installations.
- Building repair
- Reinforcement
- Code compliant
Truck & Trailer Services
Comprehensive truck and trailer repair, modification, and custom fabrication work.
- Repairs
- Modifications
- Custom work
Aluminum Bracket Repair
Expert repair of broken aluminum brackets and components with TIG welding.
- TIG welding
- Precision repair
- Quick turnaround
Heavy Equipment Repair
Professional repair services for heavy machinery, construction equipment, and industrial tools.
- Industrial grade
- Field service
- Emergency repair
Gate & Fence Repair
Residential and commercial gate and fence repair, installation, and custom fabrication.
- Residential
- Commercial
- Custom design
Commercial Gas Line Repair
Licensed commercial gas line repair and installation services.
- Licensed
- Safety certified
- Emergency service
Demolition Work
Professional demolition services for metal structures, equipment removal, and site preparation.
- Safe removal
- Site prep
- Scrap disposal
Custom Fabrication
Custom metal fabrication from concept to completion, following your specifications or our AutoCAD designs.
- AutoCAD design
- Custom projects
- Prototype to production
Manufacturing & Large Orders
High-volume manufacturing and production runs. We work with general contractors and handle large-scale projects.
- Large volume
- GC partnerships
- Production runs
Special Capabilities
- •Large Volume Orders: Equipped to handle manufacturing and high-volume production runs
- •General Contractors: Experienced working with GCs on commercial projects
- •Engineering Drawings: Follow architectural/engineering specifications precisely
- •AutoCAD Design: Create detailed drawings of any complexity for your projects
- •Laser Cutting: Currently not available on-site, but we can coordinate and manage laser cutting projects for you
Your Trusted Welding Partner
With decades of combined experience and state-of-the-art equipment, we deliver excellence on every project.
Licensed & Insured
Fully licensed and insured for your peace of mind and protection.
10+ Welding Processes
Master multiple welding techniques to handle any project requirement.
Mobile Services
We come to your location with professional equipment for on-site work.
AutoCAD Design
Create detailed AutoCAD drawings of any complexity for your projects.
Work with GCs
Experienced working with general contractors on large commercial projects.
High-Volume Orders
Equipped to handle manufacturing and large-scale production runs.
Fast Response Time
Same-day service available for urgent repairs and emergency situations.
Premium Quality
Committed to delivering exceptional craftsmanship on every project.
Metals We Work With
Expert welding and fabrication services for a wide range of metals and alloys.
Mild Steel
The most common structural steel, excellent for general fabrication and construction.
Stainless Steel
Corrosion-resistant steel ideal for food service, medical, and outdoor applications.
Galvanized Steel
Zinc-coated steel providing superior rust protection for outdoor structures.
Aluminum
Lightweight, corrosion-resistant metal perfect for aerospace, automotive, and decorative work.
Cast Steel
High-strength steel castings for heavy-duty industrial applications.
Other Alloys
We work with various specialty alloys. Contact us to confirm availability for your project.
Get Your Free Quote Today
Ready to start your project? Contact us for a free consultation and quote.
Contact Information
Phone Numbers
Address
11 W Prospect Ave, Mount Prospect, IL 60056
Working Hours
7:30 AM – 6:30 PM (Mon–Sat)