
Specialty Welding
Dupill Group offers specialty welding, field machining and heat treating. We have expertise in multiple industries including both nuclear and fuel power generation, pipeline, petrochemical, refineries, and other industrial markets.
- Wide Range of Alloys
- Piping, Vessels, Valves
- Installation
Our focus is always on quality and safety to make sure that your project gets done right.
Welding Services
Manual • Orbital/Machine • Exotic Materials • Closure Welds
Boilers • Pressure Vessels
Field Machining
Pipe Beveling • Pipe Cutting • Milling & Drilling
Flange Facing • Valve ID Repair
Heat Treating
Pre and Post Weld Heat Treating Services through Induction or Resistance Methods
Inspection Services
Contact us today to discuss your next project.
Quality Program
Dupill Group is committed to delivering products and services of an extremely high quality while growing our customer base in an effective and efficient manner. We satisfy all customer, 10CFR Part 21/10CFR50 Appendix B, ASME NQA-1, 10CFR830.122 Subpart A, and DOE Order 414.1D requirements and continually improve our processes to maintain total customer satisfaction and loyalty.

Specialty Welding
Nuclear
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Fossil
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Industrial

At Dupill Group, we don’t just weld — we restore confidence in your critical equipment. As an NBIC “R” Stamp certified repair organization, we deliver expert welding, repairs, and alterations for boilers, pressure vessels, and piping systems that meet the industry’s most rigorous safety and quality standards. Our skilled technicians combine precision workmanship with rapid turnaround to minimize downtime and keep your operations running smoothly. When you choose Dupill Group, you’re partnering with a team committed to compliance, reliability, and protecting your bottom line.
Specialty Welding
Dupill Group’s team of technicians is ready to help with proven welding and piping expertise for process piping, piping component fabrication and field installation.
- Automated / Orbital Welding
- Tip Tig (Specialty Alloys – P91)
- Valve Seat Replacements (Gate, Globe, Check)
- High Purity P-8 Welding (Automated, Autogenous, Manual)
- GTAW, SMAW, GMAW, and FCAW
Specialty Mechanical
Dupill Group offers a variety of machining services performed both in shop and in the field. We can perform on-site repairs, modifications, and improvements.
- Field Machining
- Technical Bolting / Tensioning
- Isolation Test Plugs
- Hot Taps / Line Stops / Isolation Bag Stops
Heat Treatment
Dupill Group offers pre and post weld heat treating services through induction or resistance methods.
- Stress relieving
- Normalizing
- Tempering steel
- Precipitation hardening
- Annealing
Staff Augmentation
At the Dupill Group, we can provide skilled craft workers trained to our standards to augment your team and work under your supervision.
Our technicians undertake a comprehensive vetting process to ensure that you receive the best personnel for the job.










