Pressure Vessel Fabrication
(U-Stamp)
Custom ASME U-Stamp Pressure Vessel Fabrication
Peak Welding and Fabrication provides custom pressure vessel manufacturing for industrial, municipal, and commercial applications. As an ASME U-Stamp certified code shop, we engineer, fabricate, and test pressure-retaining equipment to the strictest safety and compliance standards. Operating out of our heavy-fabrication facility in Manti, Utah, we build custom vessels for nationwide delivery, ensuring every weld meets ASME Section VIII requirements.
Our Pressure Vessel Capabilities
Code Certifications & Qualifications
Our manufacturing facility holds an active ASME U-Stamp for the fabrication of new pressure vessels, complemented by a National Board R-stamp for pressure vessel and boiler repairs and an ASME S-stamp for power boilers and power piping. Every project is executed, inspected, and stamped by our elite team of ASME-certified fabricators and welders, ensuring full regulatory compliance and National Board registration.
Engineering & Design Standards
All vessel engineering, custom design calculations, and fabrication procedures are strictly governed by the ASME Boiler and Pressure Vessel Code (BPVC) Section VIII, Division 1. We ensure every vessel meets exact dimensional tolerances, pressure ratings, and structural integrity requirements before the first weld is struck.
Heavy Shop Capacities
Custom manufacturing of large-scale vessels up to 16 feet in diameter, 3 inches in wall thickness, and a fabricated empty weight of 20 tons (40,000 lbs).
Material Expertise
Precision fabrication utilizing Carbon Steel, 304/316L Stainless Steel, and specialized high-performance alloys such as Super Duplex for highly corrosive or sanitary environments.
Certified Welding Processes
Code-compliant weld execution using GTAW (TIG), GMAW (MIG), FCAW, and SMAW (Stick) procedures precisely tailored to specific material grades and structural specifications.
Extreme Operating Environments
Pressure-retaining equipment explicitly engineered to withstand the rigorous demands of high-pressure, high-temperature, cryogenic, and highly corrosive industrial applications.
Custom Fabrication for Critical Industries
We build high-performance vessels for a variety of mission-critical sectors:
Energy & Mining
ASME Section VIII process tanks, separators, and heavy-duty industrial reservoirs built for rugged environments.
Food & Beverage Processing
304 and 316L stainless steel sanitary storage, heating vessels, and food-grade holding tanks.
Medical & Pharmaceutical
High-purity, clean-environment pressure vessels with strict sanitary weld requirements.
Propane, Air & Transportation
Compressed air receivers, LPG/Propane storage tanks, and specialized transportation vessels.
Data Centers
Chilled water expansion tanks, thermal buffer tanks, and closed-loop cooling infrastructure.
Quality Control & Testing
Compliance isn't optional. Our dedicated Quality Control Manager and internal QC program work closely with Authorized Inspectors (AIs) to guarantee complete transparency and code compliance. We provide full turnover data packages with every vessel, including: vessel engineering calculations and design, Material Test Reports (MTRs), precise weld mapping, hydrostatic test reports, and National Board registration. In addition to our in-house NDE/NDT capabilities, we partner with certified third-party testing contractors for Radiography (RT), Ultrasonic Testing (UT), Dye Penetrant (PT), and Magnetic Particle (MT) examination when needed.
Frequently Asked Questions About Our U-Stamp Services
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An ASME U-Stamp certifies that a manufacturer meets the strict quality control and fabrication standards set by the American Society of Mechanical Engineers (ASME) Section VIII, Division 1 for building new pressure vessels.
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Yes. While our field welding team serves the Western United States, our Manti, Utah fabrication shop builds and ships custom ASME pressure vessels to facilities across the entire country.
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Yes. We regularly fabricate 304 and 316L stainless steel pressure vessels designed for sanitary, food-grade, and high-purity medical environments.
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Every custom vessel is delivered with a complete Manufacturer’s Data Report (Form U-1 or U-1A), National Board registration, Material Test Reports (MTRs), and full quality control testing documentation.
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We offer complete turnkey solutions. We can fabricate build-to-print from your existing drawings, or our team can handle the complete vessel engineering, calculations, and design to ensure your custom tank meets ASME Section VIII, Division 1 code requirements prior to fabrication. In either scenario, our engineering team rigorously verifies and refines the design to guarantee strict ASME code compliance before any fabrication begins.
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Yes. In addition to our U-Stamp for manufacturing new vessels, Peak Welding and Fabrication holds a National Board R-Stamp. Our certified field crews can mobilize across the Western United States to perform compliant repairs and code alterations on your existing pressure vessels and boilers. See our R-Stamp info here.
In addition to new vessel fabrication, Peak Welding holds National Board R and S stamps for compliant boiler repair, code alterations, and power piping.
Request a Quote
Whether you’re constructing a new facility, upgrading cooling systems, in need of a customized pressure vessel, or maintaining critical infrastructure, Peak Welding and Fabrication delivers dependable ASME and NB-certified welding and fabrication solutions.
Contact our Manti, Utah facility today to discuss your project specifications, custom design requirements, and nationwide delivery timelines.
