Since 2014 · Direct Gas Fire Specialists
On-Site Pressure Vessel PWHT —
No Furnace Required
The most active mobile pressure vessel PWHT company in the U.S. — direct gas fire combustion, on your site, on your schedule. If you're evaluating contractors, the guide below is where serious fabricators start.
Our Services
On-site. No transport risk. No schedule delays. No size limits.
Primary Service
On-Site Pressure
Vessel PWHT
Any size. Any weight. Any configuration. Up to 144' and counting.
Your vessel stays in your yard. Your crew watches every phase. GCC mobilizes directly to your facility — Gulf Coast to anywhere in the U.S. Full ASME documentation in your hands before the trucks leave.
View Vessel PWHT →
Industrial Service
Refractory
Dry Out
High-velocity direct gas fire. Proper cure schedules. Every time.
GCC's high-velocity combustion systems deliver controlled, documented dry outs for furnaces, boilers, and refractory-lined vessels. No shortcuts. Full documentation on every job.
View Refractory Services →
Localized PWHT
Targeted heat treatment on pipe spools, nozzles, and weld repairs. Same code compliance and documentation standards as full vessel jobs.
View Localized PWHT →
Specialty Services
Coating and paint cures, hydrogen bake-outs, welding pre-heats, and heat treating consulting. If it needs controlled heat, call us.
View Specialty Services →In-House Furnace — Spring, TX
Up to 25,000 lbs · 30' × 10' × 10' · Send smaller components directly to our facility
Direct Gas Fire Combustion
This is what 1,150°F looks like from the inside.
Gas hoses threaded through the manway. Ceramic fiber insulation packed tight. The cook running on your floor, on your schedule, with your QC team watching every phase.
See the Work
On-Site PWHT in Action — In Your Yard, On Your Schedule
James Benefield walks you through an on-site pressure vessel PWHT job — what the setup looks like, how the process runs, and what you get when it's done.
Time Lapse
621,000 lbs. On-Site. Start to Finish.
A full pressure vessel PWHT job compressed into minutes — wrapped, cooked to 1,150°F, and documented on your floor.
James Benefield — Owner & Operator
Gulf Coast Combustion is a family-owned company. James founded it in 2014 and is involved in every job we take on. No sales team, no dispatcher. When you call, you reach the person who built this company and runs the work.
Before You Call
Read the Industry's Most Complete Technical Guides
Technical Guide
The Fabricator's Complete Guide to Pressure Vessel PWHT
Everything a fabricator or plant manager needs to know about pressure vessel PWHT — code requirements, execution standards, documentation, and how to evaluate a contractor.
Read the PWHT Guide →
Technical Guide
The Complete Guide to Refractory Dry Out
Everything you need to know about refractory dry out — the schedule, full vs. partial dry outs, steam events, and what to expect from a contractor who gets it right.
Read the Refractory Guide →From The Blog
Resources & Insights
What Engineers Actually Want to Know About On-Site Pressure Vessel PWHT
A photo of a 55-foot pressure vessel at 1,150°F made its way onto a major engineering community online. Within 24 hours: 503 upvotes, 70+ comments,
On-Site vs. Shop Furnace PWHT — Why Smart Fabricators Choose Mobile Heat Treating
We don’t transport the vessel to a furnace. We turn it into one. A complete breakdown of on-site vs. shop furnace PWHT — cost, transport risk, size limits, schedule control, and documentation. Everything fabricators need before they choose.
What Happens If You Rush a Refractory Dry Out
Refractory lining is expensive. The installation labor alone makes it one of the higher line items on any heater or vessel turnaround. The dry out
We mobilize directly to your facility — no vessel transport, no oversized load permits, no furnace queue.
Every technician is GCC-certified. Level 4 requires 5+ consecutive years. The crew that shows up knows this work.
We think safe, work safe. Every GCC technician has the authority to stop work for any unsafe condition — no exceptions.
We Provide
On-Site Heat Treating. Done Right.
On-site direct gas fire PWHT for high-pressure, thick-walled pressure vessels, refractory dry outs, and combustion services — at your facility, on your schedule. Since 2014.
Call us at 713-425-3773.
Dedicated