- 817 Millbrook Lane Kokomo, IN 46901
- (765) 450-7069 | (317) 296-7481
- info@hmhmechanical.com
Our Expertise
Code Stamp Certifications
Ensuring Compliance, Safety, and Quality
At HMH Contractors, Inc., we are certified by the American Society of Mechanical Engineers (ASME) and The National Board Inspection Code (NBIC) to perform installation, inspection, and repair of pressure-retaining equipment. Our Code Stamp Certifications demonstrate our commitment to safety, compliance, and precision engineering, ensuring that all work meets strict industry regulations.






Certified Code Stamp Services
When it comes to pressure-retaining equipment, choosing a Code Stamp Certified contractor ensures your systems meet strict industry regulations. Ensure your pressure-retaining equipment operates with maximum protection, compliance, and efficiency with HMH Contractors, Inc.
Why Choose Our Certified Services?
- ASME & NBIC Certified Work
- Compliance with Industry Standards & Regulations
- Enhanced System Safety & Reliability
- Precision Engineering & Quality Assurance
- Reduced Downtime & Operational Risks
- Expertise in Fire Tube & Water Tube Boilers, Pressure
- Vessels, Power Piping & Tanks
- Long-Term Performance & Cost Savings





Comprehensive Equipment Repairs
We offer ASME R stamp-certified repairs, ensuring welding stamps and R stamp welding meet industry regulations. Our repair services include:
- R Stamp Repairs
Tube replacement, shell repairs, and critical fixes for pressure vessels. - PP Stamp Work
Pressure part modifications and compliance upgrades. - U Stamp Repairs
Repairs for tanks and pressure vessels, while ensuring ASME stamp certification and system integrity.
The National Board Inspection Code (NBIC) sets the highest standards for the installation, inspection, repair, and alteration of pressure-retaining equipment. With our ASME and NBIC Code Stamp Certifications, HMH Contractors, Inc. ensures that your equipment remains compliant, safe, and operational for years to come.
Fire Tube Boilers
We provide certified installation, inspection, and repair of fire tube boilers, ensuring they meet all safety codes and performance standards.
Water Tube Boilers
Our experts specialize in installation, maintenance, and inspections of water tube boilers, maintaining their efficiency, reliability, and regulatory compliance.
Pressure Vessels
We handle the installation, repair, and inspection of pressure vessels, ensuring compliance with ASME and NBIC regulations to keep systems safe and operational.
Tanks
We perform installation and inspections for industrial tanks, ensuring they meet the required safety and compliance standards for long-term reliability.
Power Piping
Our certified power piping services include installation, maintenance, and safety inspections, ensuring efficient and compliant operation of industrial piping systems.
Trusted by Industry Leaders Across Indiana
Shawn Slater
John
Bonnie Drews
Frequently Asked Questions
Can you assist with HVAC and refrigeration system installation and repairs?
Yes, we handle HVAC and refrigeration installations, repairs, maintenance, and retrofits. We focus on improving energy efficiency and air quality.
What kind of plumbing services do you offer for commercial facilities?
We provide plumbing installation, repairs, drain cleaning, and backflow prevention. We work on both standard and complex systems in commercial and industrial buildings.
Do you have expertise in process piping for specific industries like food processing or pharmaceuticals?
Yes, we specialize in process piping for industries like food processing and pharmaceuticals. Our work meets strict safety and compliance standards, with precision-engineered piping and welding.
What types of maintenance and repair services do you provide for boilers and chillers?
We install, maintain, and repair boilers and chillers. We also offer preventative maintenance programs to keep systems running efficiently and safely.
Are you certified to handle specific equipment or code stamps?
Yes, we’re certified by ASME and NBIC to install, inspect, and repair pressure-retaining equipment. We hold U, PP, and R stamps.
How can I get a quote for a project?
You can contact us at one of our offices in Kokomo, Indianapolis, or Lafayette—or request a quote through our website.
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Build Smarter with HMH Contractors
Choosing HMH Contractors, Inc. means working with a trusted partner who prioritizes efficiency, accuracy, and cost-effective solutions. Our pre-construction expertise lays the groundwork for a successful, on-time, and within-budget project.
Let’s plan for success—contact us today!






