
Precision Pressure Vessel Engineering Since 1932
Certified Excellence
Roy E. Hanson Jr. Mfg. is a major U.S. manufacturer of carbon and stainless steel pressure vessels built to the ASME Boiler and Pressure Vessel Code, Sect VIII, Div 1 and HLW.
We specialize in providing high-quality tanks to companies in many different industries, including OEMs, Energy Sector, Clean Energy Storage, HVAC Solutions, and Municipal Wastewater.
ASME Calculations & Blueprinting
Precision Cutting, Rolling, & Welding
Hydro-testing, Lining, & Coating
Direct Shipping to Site
Reduce downtime with our extensive inventory of ready-to-ship ASME pressure vessels.
Engineered for durability. Designed for performance.
We maintain the highest certifications and engineering standards to ensure safety and compliance across all industries.
Wide range pressure applications, from low-pressure storage to high-pressure processing, always ensuring ASME compliance.
Expert fabrication using Carbon Steel (SA516-70, SA36) and Stainless Steel (304, 316, 316L) for corrosion resistance.
Fully certified for ASME 'U' and 'UM' stamps, National Board 'R' stamp, and 'HLW'. We also build to USCG and ABS standards.
Full in-house engineering using SolidWorks to design custom vessels fitting precise spatial and operational constraints.
Internal linings including porcelain enamel (glass), epoxy, and cement, plus exterior primer and custom coating systems.

We manufactured a full-size replica of a space rocket, complete with internal water ballast tanks for precise weight distribution simulation. This project allowed engineers to test launch capabilities from cargo planes safely.

For a $1.64bn Royal Air Force order, we created a specialized water ballast tank with internal compartments. This enabled rigorous load capacity testing under various simulated operating conditions for the Chinook helicopter.
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