Built for Performance: Piping, Plumbing & Welding Construction You Can Trust

Day & Zimmermann is your reliable partner for safe, high-quality piping, plumbing, and welding services in the Power and Industrial sectors. With over a century of experience, a nationwide labor footprint, and full EPC capabilities, we execute complex projects with precision, speed, and safety.

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Proven Expertise in Complex Piping and Plumbing Systems

We’ve delivered piping and plumbing solutions across some of the most demanding environments. Our seasoned teams are trained, certified, and trusted to work with a wide range of materials, configurations, and operational constraints.
Our capabilities include:
• Carbon Steel and Stainless-Steel Piping
• HDPE and Specialty Plastic Piping Systems
• Boiler Tubing and Steam Lines
• Pipe Racks, Supports, and Modular Assemblies
• Valve Installation and Mechanical Connections
• Dust Collection Systems and Baghouse Installations
• Ductwork Fabrication and Installation
• Turbine Piping and Associated Utilities
• Liquid Cooling Systems for Data Centers and Advanced Manufacturing

Whether you're powering a new utility plant or upgrading a semiconductor cleanroom, D&Z has the experience and agility to get the job done safely and efficiently.

Piping and Plumbing from D&Z

A Safe, Reliable Welding Partner

Rigorous planning and supervision

Certified and experienced welders

Proven quality control and inspection protocols

Expert welders familiar with a variety of metals, alloys, and code-critical joints

High-Quality Welding Across Industries

Our high-quality welding services help clients improve project performance, reduce cost, and eliminate rework. In the last 3 years D&Z has maintained a weld reject rate below 1% with approximately 160,000 welds performed.

We serve a diverse range of industries including utilities, advanced energy, chemical processing, automotive, pharmaceutical, and semiconductor manufacturing providing:

• Precision field welding and fabrication
• Weld planning and supervision
• Code-compliant documentation and traceability
• Boiler and high-energy piping welding
• Orbital welding for clean and ultra-high purity applications

DZ Welding CHA-1

Piping

Complete EPC Capabilities in Piping & Plumbing

D&Z delivers true end-to-end EPC services, integrating engineering, procurement, construction, and commissioning under one roof. This reduces risk, accelerates schedules, and ensures the highest quality outcomes.
Our EPC scope includes:
• Piping system design and layout
• Pipe stress analysis and code compliance
• Equipment and material procurement
• Fabrication, assembly, and field installation
• System startup, turnover, and commissioning

Commissioning & Startup Done Right

Commissioning plan development and execution

System turnover documentation and tracking

Hydrostatic testing, inspection, and validation

Punch-list resolution

Mechanical integrity assurance

O&M team handoff and training

Skilled Labor with a Nationwide Footprint

D&Z delivers skilled craft labor solutions in both union and open shop environments, tailoring our approach to meet each customer’s specific needs.
In union settings, our long-standing relationships with the Building Trades and understanding of labor agreements allow us to collaborate closely on craft planning and resource alignment.
In open shop markets, we leverage strong community ties, partnerships with community colleges and training programs, and our proprietary tools that match skilled workers to projects based. These efforts combine to connect customers with the right talent while building a sustainable local workforce.
Across both models, we focus on workforce quality, flexibility, and long-term labor solutions that support project success, even in today’s tight labor market.

Experience. Precision Welding. EPC Execution. Skilled Labor. Relentless Safety.That’s the Day & Zimmermann difference. Let’s build what’s next — together.

Safety: Our Core Value

At D&Z, safety is not an initiative — it’s our number one value embedded in every task, every role, and every decision. We are relentless in our commitment to creating safe, injury-free workplaces even in hazardous environments.
Our proactive approach includes:
• Hazard identification and mitigation before work begins
• Stop Work Authority for all team members
• Job Safety Analysis (JSA) and pre-task planning
• Continuous improvement through incident learning and feedback loops
We believe safety is everyone’s responsibility and that even the smallest actions can make a life-saving difference.

Steel_Pipe_Line_with_Hot_Insulation-Jul-10-2024-07-31-45-7902-PM

Steve Duda, Industrial Market Leader, manages all aspects of D&Z's Industrial Markets.

Connect with Steve and his team to discuss your company's or site's specific needs by providing your contact information in the form