24/7 Emergency
The Complete Thermal Lifecycle Partner
Built around safety, quality, schedule, and value.
Our story, values, safety, quality, ESG, certifications, and facilities.
Thermal expertise, manufacturing excellence, field execution, and lifecycle support.
Experienced leaders devoted to customer success.
Positioned to serve customers across North America.
Heat Transfer Equipment Built for Critical Infrastructure
Air cooled heat exchangers, shell-and-tube heat exchangers, process equipment, and specialty fabrication designed for reliability, performance, and lifecycle value.
Solving Thermal Challenges Across Critical Infrastructure
Cust-O-Fab supports the industries that power modern life through engineered heat-transfer equipment, specialty fabrication, and field execution.
Supporting continuous operation where reliability matters most.
Cooling the servers enabling the AI revolution.
Equipment for renewable fuels and energy projects.
Heat recovery and process cooling equipment.
Reliable equipment for gas processing, transport, and export infrastructure.
Engineered heat transfer for complex process environments.
Ammonia condensers and fertilizer process equipment.
Specialty fabrication for launch and test infrastructure.
Thermal performance for dependable power production.
Heat exchangers and vessels for gas separation and liquefaction.
Process equipment and field services for mining operations.
Field Execution That Extends Beyond Manufacturing
Engineering, installation, repairs, and lifecycle support delivered by experienced field teams.
Innovation
Insights, tools, and guidance for getting more performance and uptime from your heat transfer equipment.
Getting more duty, efficiency, and service life from existing heat-transfer equipment.
Literature, data sheets, guides, and specifications.
The digital design, modeling, and simulation tools behind our engineering.
Updates, project stories, and visual explainers.
How people, automation, and data work together in our shops and in the field.
An interactive 3D look at what we build.
Build More Than a Career
Skilled trades, engineering, and field careers with a team that puts safety first.
What Makes Us Different
For more than five decades, we have designed, built, and serviced the heat transfer equipment that keeps refineries, power plants, LNG terminals, and data centers running.
1972
Founded in Sand Springs, Oklahoma
280,000+
Sq ft of shop space across three fabrication facilities
6
Locations across Oklahoma, Texas, and Louisiana
750+
Qualified weld procedures
24/7
Shops fully staffed, field crews on call
VPP Star
The only VPP-recognized heat exchanger manufacturer in the USA
We Plan Around Your Outage Window, Not Ours
When a unit is down, every hour is lost production, and the replacement has to fit the first time. That is the pressure our shops and field crews are built for.
Thermal Expertise
In-house thermal and mechanical design to ASME, TEMA, and API standards, with warranties on specified projects.
Manufacturing Excellence
Three fabrication facilities, fully staffed 24/7, building to ASME Code and National Board requirements.
Field Execution
Craftspeople, supervisors, and planners who install, repair, retube, and extract in your plant.
Lifecycle Support
Replacement bundles, upgrades, and emergency response for the equipment long after startup.
Single Point of Responsibility
One partner for the process equipment across your plant and the field crews who install, repair, and maintain it.
What You Get
A comprehensive offering, so one call covers fabrication, field work, and repair
Support throughout the lifecycle of your process infrastructure
An end-to-end view of your equipment that adds value at every stage
A consultative approach backed by a broad range of capabilities
Why It Matters to You
Consolidate vendors with a single, best-in-class services provider
Consistent service across all of your locations
Lower mobilization costs and fewer logistical complexities
Lower repair and maintenance costs, with no multiple vendors to manage and coordinate
Thermally Designed and Built by One Accountable Team
Our thermal and mechanical engineers design every unit around your process conditions, and our own ASME Code shops fabricate and test it. With no hand-offs between a design firm and a subcontracted shop, you get one party accountable for performance and schedule.
120 in.
shell & tube exchangers, up to 400,000 lbs
450,000 lbs
maximum fabricated weight for vessels and towers
192 in.
maximum OD, up to 300 ft long
125 acres
of storage and laydown for large equipment
Field Execution That Extends Beyond Manufacturing
Equipment-only suppliers ship a unit and leave. Our craftspeople, supervisors, engineers, and planners install it, extract and retube it, and come back for the next turnaround.
750+
qualified weld procedures
800+
certified welders
4
field service bases in Oklahoma, Texas, and Louisiana
100%
Day 1 training compliance through Safety Council partnerships
Safety & Quality
Safety
A people-first approach: every procedure protects our crew and our customers.
Recognized by
OSHA’s Voluntary Protection Program (VPP)
The National Safety Council
American Fuel and Petrochemical Manufacturers (AFPM)
The Montana Safety Council
The Oklahoma Safety Council
Quality
CUST-O-FAB is an ASME and National Board certified engineered-to-order manufacturer and authorized repair organization. Reliability and quality control personnel inspect at every stage of fabrication.
S Stamp
ASME power boilers
U Stamp
ASME pressure vessels
R Stamp
National Board repairs and alterations
NB Mark
National Board registration
How It Works
Three steps from first call to a unit back in service.
1
Tell Us What’s at Stake
Share the equipment, the problem, and your outage window. Our team responds fast, 24/7.
2
Get a Plan Built Around Your Schedule
Engineering, a firm scope, and a timeline that fits your window.
3
We Build, Install, and Stand Behind It
Shop fabrication, field installation, and lifecycle support from one accountable team.