SERVICES

Boiler Installation & ASME Code Welding Services in Chicago

Precision Welding. Code-Stamped. Industrial-Ready.

Need Reliable Boiler Installation & Code Welding in the Chicago Area?

At DePue Mechanical, we deliver expert boiler solutions for high-demand industrial facilities. Our ASME-certified welders specialize in code-compliant fabrication, repair, and installation of pressure vessels, tanks, boilers, and steam systems.

Whether you're expanding capacity or fixing a critical failure, we’re the trusted mechanical contractor plant managers turn to when uptime matters.

Let’s get your boiler systems back to full strength!

CAPABILITIES

All Your Boiler Needs—Handled In-House

Why Choose DePue Mechanical for Boiler & Code Welding?

Why Choose DePue Mechanical for Boiler & Code Welding?

Our boilermakers are certified by the American Society of Mechanical Engineers (ASME) and follow all applicable pressure vessel and welding codes. From emergency weld repairs to complete system installations, our team brings the skills, safety focus, and professionalism your plant demands.

Certified Expertise: Our union boilermakers are licensed, experienced, and code-trained to perform high-integrity welds under ASME and National Board standards.
Turnkey Boiler Solutions: From design and fab to setting and startup, we install, repair, and modify boiler systems without outsourcing.
Welding Capabilities: We perform TIG, MIG, and Stick welding, orbital welding, and precision work on stainless, carbon steel, and alloys.
Efficient + Safe: With zero tolerance for failure, we complete every weld to spec, under tight deadlines, without cutting corners.
On-Call Responsiveness: We handle emergency shutdowns, inspections, and repair needs 24/7 across Illinois and surrounding states.

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Why Choose DePue Mechanical for Boiler & Code Welding?

ASME-Certified Welders. Built to Code. Built to Last.

Our team holds “R,” “U,” and “PP” stamps from the National Board of Boiler and Pressure Vessel Inspectors, ensuring our work is inspected, documented, and trusted across industries. Whether you're dealing with steam, condensate, hot water, or pressure-rated equipment, we bring peace of mind through tested, traceable welding processes.

We also perform:

- Hydrotesting and leak detection

- Valve, tank, and fitting installation

- Steam trap replacements

- Boiler inspections and rebuilds

- Shutdown and turnaround welding support

No guesswork. No shortcuts. Just certified craftsmanship that meets or exceeds your code requirements.

Certifications

Highest Industry Standards. Proven by the Stamps We Carry.

DePue Mechanical is certified by the National Board with the following ASME stamps:
- “R” Stamp: Repair and alteration of pressure vessels
- “U” Stamp: Manufacture of new pressure vessels
- “PP” Stamp: Fabrication of pressure piping
These credentials allow us to legally and confidently execute complex pressure-retaining work other contractors won’t touch.
Ready for a Boiler Contractor Who Knows the Code Cold? Let’s talk about your pressure vessel project, your timeline, and how we can make it happen—safely, quickly, and to spec.

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