Process Piping & Fabrication
When piping fails, systems stop. We execute code-minded piping repairs, tie-ins, and fabrication with the documentation and testing you need—supporting steam, chilled water, condenser water, and process systems across Oklahoma.
Process Piping Services in Oklahoma
Total Mechanical Services provides ASME-certified welding and piping fabrication across Oklahoma City, Tulsa, and statewide. We specialize in steam distribution, chilled water loops, condenser water systems, and industrial process piping—coordinating shutdown windows, pressure testing, and documentation to reduce operational risk and inspection friction. Commercial and industrial facilities only.
Service Highlights
- Process Welding
- Steam Piping
- Chilled Water
- Medical Gas
What Piping Systems Do We Service?
From high-pressure steam to chilled water distribution—we fabricate and maintain the critical loops that move energy through your facility.
Steam Distribution
High-pressure and low-pressure steam piping for heating, sterilization, and process applications. Proper trap station installation and condensate return.
Chilled Water Loops
Primary and secondary chilled water distribution for central plants. Variable flow piping, decouplers, and hydraulic balancing.
Condenser Water
Cooling tower to chiller piping. Proper sizing for pressure drop, strainer installation, and water treatment integration.
Hot Water / Hydronic
Closed-loop heating systems for commercial buildings. Expansion tank sizing, air separation, and glycol systems for freeze protection.
Process Piping
Industrial process loops for manufacturing, food processing, and pharmaceutical applications. Custom materials including stainless steel.
Medical Gas
Medical gas piping for healthcare facilities. Vacuum, compressed air, and oxygen systems meeting NFPA 99 requirements.
Piping Services
From emergency leak repairs to complete piping system design and installation—our certified welders and pipefitters handle every phase of the project.
Pipe Fabrication
Shop and field fabrication of custom piping assemblies. Prefab reduces installation time and improves quality.
System Installation
Complete piping system installation for new construction and retrofits. Hangers, supports, and insulation included.
Leak Repair & Welding
Emergency repair of pipe failures and weld leaks. Hot taps for system modifications without shutdown.
System Modifications
Adding equipment connections, rerouting piping, and capacity upgrades. Tie-ins coordinated to minimize downtime.
Welding Capabilities
| Processes | GTAW (TIG), GMAW (MIG), SMAW (Stick) |
| Materials | Carbon Steel, Stainless, Copper |
| Pipe Sizes | 1/2" to 24"+ |
| Certifications | ASME Section IX, AWS D1.1 |
| Testing | Hydrostatic, Radiographic (RT) |
ASME R-Stamp Certified
Our R-Stamp authorization covers welding repairs to pressure vessels and boiler components. All work documented with R-1 forms for state inspectors.
Piping Materials
We work with the right material for each application.
Carbon Steel
Steam, hydronic, and process piping. Schedule 40/80. Welded and threaded connections.
Stainless Steel
Sanitary and corrosive-resistant applications. 304 and 316L grades. TIG welded.
Copper
Refrigerant lines, medical gas, and domestic water. Brazed and soldered connections.
Grooved / Victaulic
Fast installation for fire protection and mechanical systems. Allows thermal expansion.
Industries Requiring Piping Expertise
Process piping is the circulatory system of your facility. We understand the unique requirements of each sector.
Healthcare
Steam for sterilization, chilled water for cooling, and medical gas distribution. ICRA protocols for work in occupied hospitals.
Manufacturing
Process cooling, hydraulic systems, and compressed air distribution. Scheduled shutdowns to minimize production impact.
Central Energy Plants
Large-bore piping for campus chilled water and steam distribution. Headers, pumps, and equipment connections.
Frequently Asked Questions
Common questions about process piping and fabrication.
What is the advantage of shop fabrication vs. field fabrication?
Shop fabrication allows controlled conditions for welding, better quality control, and faster field installation. Complex assemblies can be pre-fitted and tested before delivery. This reduces on-site labor hours, minimizes shutdown duration, and often improves weld quality. For large projects, a combination of shop prefab and field welding provides the best balance of quality and cost.
What testing do you perform on piping welds?
Standard testing includes visual inspection and hydrostatic pressure testing—filling the system with water and pressurizing to 1.5x operating pressure to verify integrity. For critical applications or when required by code, we coordinate radiographic testing (RT) with third-party inspection agencies. All testing is documented with certificates for your records and inspector review.
Can you add connections to an existing system without shutdown?
In many cases, yes. Hot tapping allows us to drill into a pressurized pipe and install a new connection without depressurizing the system. This is common for adding branch connections to chilled water or condenser water loops in facilities that can't tolerate downtime. However, hot tapping isn't suitable for all situations—pipe condition, material, and pressure must be evaluated. We'll assess your system and recommend the safest approach.
How do you handle insulation and pipe covering?
We install mechanical insulation for chilled water (to prevent condensation) and hot water/steam (to prevent heat loss and protect personnel). Common materials include fiberglass with ASJ jacket for indoor applications and aluminum-clad for outdoor or industrial environments. Insulation thickness is determined by energy code requirements and condensation control needs. We can also coordinate with specialized insulation contractors for large-scale projects.
Piping Resources & Case Studies
View All Resources
Autumn House (Oklahoma City) Emergency Rental Chiller and 45-Week Lead Time Replacement
When Autumn House faced a 45-week lead time for a new chiller, we pivoted to an emergency rental solution and custom piping modifications to keep their residents cool through the Oklahoma summer.
The Regency Apartments (Oklahoma City): Redwood Cooling Tower Replacement at Extreme Height
One of the few remaining Redwood cooling towers in Oklahoma City was replaced with a modern unit. This project required a high-altitude crane set and specialized demolition.
National Standard (Stillwater, OK) 4.5 MMBTU Makeup Air Heater Retrofit: Paint & Coat Building Capacity Upgrade
A Stillwater industrial retrofit replacing an aging gas-fired makeup air heater with a 4.5 MMBTU unit—rigging, gas train setup, startup checklist, and production-minded scheduling.
Building Infrastructure That Lasts
From emergency leak repairs to complete piping system installations, our ASME-certified welders deliver code-compliant work. Commercial and industrial inquiries only.
Serving Oklahoma City, Tulsa, and Statewide Since 2008