We specialize in tank swing projects for liquid fuel, propane, bulk oil, and anhydrous ammonia delivery vehicles. Our experienced technicians provide complete fabrication, tank-to-chassis integration, assembly, inspections, testing, and DOT certification, delivering a fully compliant, road-ready truck.
Service & Inspection
GROWMARK Tank & Truck Centers deliver exceptional tank, truck, and trailer maintenance services, ensuring safety, reliability, and compliance. Our service centers provide comprehensive repair and inspection services, including MC-331, DOT-406, and DOT-407 inspections, R-Stamp repairs, and hydraulic system setup and repair. GROWMARK's DOT-certified Registered Inspectors perform the testing, inspections, and repairs necessary to keep your fleet safe, compliant, and on the road.
Comprehensive Repairs
Drive-in service is always welcome. Our team works quickly to replace components and complete repairs, minimizing downtime and getting you back on the road as soon as possible. We maintain a large inventory of repair parts to support fast turnaround times. When additional parts are needed, overnight shipping and direct expediting services are available to ensure you get the parts you need when you need them.
DOT Certified Testing
Our registered inspectors perform visual external inspections, leak testing, EPA K-27 testing, pressure retests, and internal visual inspections to ensure your equipment meets all regulatory and compliance requirements.
Expert technicians
Our DOT-certified technicians bring extensive daily experience servicing tank wagons, bobtails, and trailing equipment providing expert maintenance, inspections, and repairs to keep your equipment operating safely and efficiently.”
Registered Inspectors (RI)
Federally certified inspectors qualified to perform all required inspections and testing.
R-Stamp Welding
Certified pressure vessel repair and welding. Full tank and component fabrication capabilities.
DOT Compliance
All testing and repairs to meet Department of Transportation cargo tank inspection requirements.
Meter Proving
State-certified calibration and testing of flow meters and measurement equipment to ensure accuracy and compliance.
WEBS
wEBS system installations and diagnostic services
Parts & services
We maintain a large inventory of hydraulic and repair parts to support fast, reliable service. As direct vendors for leading manufacturers, we provide competitive pricing and quick access to the parts you need. When special orders are required, overnight shipping and direct expediting services help minimize downtime and keep your equipment running.
GROWMARK Tank & Truck Centers provide comprehensive fleet maintenance and compliance management. Our DOT certified technicians handle everything from routine inspections to major repairs. We work to minimize your downtime and keep your fleet operating safely and compliantly on the road.
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Quality Parts & Service
Providing exceptional service & quality parts that revolve around your business. Our load coordinators and analysts are available to help you find exactly what you need.
Our Locations
GROWMARK Tank & Truck Centers operate three full-service maintenance and repair facilities strategically located in South Roxana, Illinois; Morton, Illinois; and Waterloo, Iowa. Whether you need inspections, repairs, fabrication, hydraulic components, tank certifications, or replacement parts, our experienced team is ready to support your operation. Contact the facility nearest you to learn how we can help keep your equipment safe, compliant, and on the road.
Join a Trusted Cooperative
GROWMARK Tank & Truck Centers operate three full-service maintenance and repair facilities strategically located in South Roxana, Illinois; Morton, Illinois; and Waterloo, Iowa. Whether you need inspections, repairs, fabrication, hydraulic components, tank certifications, or replacement parts, our experienced team is ready to support your operation. Contact the facility nearest you to learn how we can help keep your equipment safe, compliant, and on the road.
Discount Quality parts Inventory
GROWMARK Tank & Truck Centers maintain a large inventory of repair parts. Browse available items or contact a location directly.
GROWMARK Tank & Truck Centers maintain a large inventory of repair parts. We keep extensive stock to support our fabrication, assembly, and repair operations. Browse our current availability by location and category. When you find what you need, contact the shop manager at your nearest facility to confirm stock and place an order.