We Provide Expert Propane Truck Conversions & Custom Steel Fabrication

When you're in the market for propane truck conversions or need custom steel fabrication, see Keehn first. We're fully experienced with the ins-and-outs of truck conversions for use with propane. With full fabrication capabilities to build new bobtails to your exact specifications—as well as full truck and trailer decal and painting services—we are ready to get you the truck you need.

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Propane Truck Conversion & Custom Steel Fabrication Services

At Keehn, we can help you with propane truck conversions, custom tanks, ISO containers, custom steel fabrication, and more. And better still, we're trained in DOT testing and inspections, so we can help wherever you may need it. Read on to learn more about our design and fabrication services, as well as our equipment and facilities.

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Keehn Service utilizes the latest design software—AutoCAD Inventor for solid modeling and design, PTC Mathcad for engineering calculations, and CEI for ASME Code calculations—to design custom storage tanks. But software alone does not make one "capable" of custom tank manufacturing. Keehn's engineering team has nearly 60 years of mechanical engineering, electrical, pressure vessel, chemical, and DOT experience.

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What good are detailed drawings and calculations if you don't have the fabrication knowledge and skills to make the trailer plans and designs a reality? Here at Keehn, we employ a tenured and experienced shop fabrication team. Many of them have spent decades working on chemical and propane bobtails, transports, ISO containers, stationary equipment, and fieldwork. We train our employees in DOT testing and inspections, electrical wiring, piping, fabrication, and welding. Plus, ten of our employees are certified welders to ASME Section IX and qualified in GMAW, GTAW, SMAW, and FCAW welding processes.

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Equipment and Facilities

Keehn maintains 19,200 square feet of truck and trailer shop space, 15 shop bays for truck and trailer fabrication and repairs, and seven acres of outdoor storage space. Our equipment has the capacity for welding and cutting material from 1" to 1/2" thick, including mild steel, T-1 steel, stainless steel, aluminum, nickel, and titanium. Our lifting capacities even range from two 2-ton fork trucks to multiple gantry and yard cranes that can lift up to 30 tons!

Why You Should Choose Us at Keehn Service Corporation


The first and most important reason you'll want to work with Keehn is that we're experienced. We've devoted our business to the diligent repair and manufacturing of MC-330 tank trucks (bobtails), transports, and storage vessels since 1962. Experience is essential to us because we know it's vital to our customers. That's why—no matter what area of our business—we only hire the best. We're leaders in our industry thanks to the collective experience of our tenured design and fabrication teams to our professional service and inspection representatives.


Other testing companies might only own a single pickup truck. At Keehn, we maintain a large brick and mortar complex featuring 14 shop bays for truck and trailer fabrication, repairs, and seven acres of outdoor storage space. We also depend on a small army of dedicated employees ready to serve you and your unique needs. Are you stuck out on the road? No sweat—just give us a call, and we'll come to you!


Our aim is simple: to get you back on the road as quickly as possible, with minimal hassle. We also enjoy helping our customers succeed by sharing knowledge about the industry to remain profitable far into the future.

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Interested in Our Propane Truck Conversion? Reach Out to Us Below!

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