At Rhino Fittings, we’re not just another tank dealer. I’m Mark Luzaich, owner of American Tank Co;, Inc. and a California A-General Engineering Contractor with 44 years in the tank business. I’ve built this company on one simple belief: do it right the first time.
As a licensed California A-General Engineering Contractor, I don’t just sell fittings and tanks—I understand the critical systems they support. My license and background mean I’ve been involved in everything from site grading and waterworks projects to large-scale tank installations and custom plumbing solutions. That knowledge directly benefits every customer.
Built on a Lifetime of Practical Knowledge
When you’ve spent more than four decades in the field, you know what works and what doesn’t. My team and I only stock fittings, valves, and accessories that I trust personally—because I’ve seen how they perform under pressure, in extreme weather, and over time. Over the years, we’ve gone far beyond selling tanks and fittings. We’ve engineered, patented, fabricated, and installed some of the toughest, most reliable tank systems in the industry.
Patented Fittings, Proven in the Field
When off-the-shelf fittings couldn’t keep up with real-world demands, we designed our own. Rhino Fittings holds a U.S. patent for a custom-designed tank fitting that solves common issues with durability, leak prevention, and installation efficiency.
This isn’t theory—this is gear we’ve used and improved over decades in the field. Our patented fittings are used across agriculture, fire protection, water storage, and industrial applications where performance matters most.
Galvanized Steel Tanks: Hand Fabricated, Built to Last
In addition to poly tanks and accessories, we specialize in galvanized steel tanks that are custom-built by hand. Our fabrication process combines old-school craftsmanship with modern durability—perfect for clients who need a tank that will stand up to weather, weight, and time.
These tanks aren’t just built—they’re installed by pros with over 50 years of combined experience in the field. Our crew has seen it all: remote ranches, tough terrain, tight timelines—and we deliver, every time.
Experience That Adds Up
Between my four decades of engineering experience and our installation team’s combined five decades in the field, you’re not just getting a product—you’re getting the confidence that comes from experience, licensing, and accountability.