Millwrights certified Code Welding ASME and AWS

Prime Field Service: Your Premier Partner for Certified Code Welding and Precision Fabrication

At Prime, we pride ourselves on being at the forefront of the welding and fabrication industry, offering unparalleled services in design, building, shop, and field certified code welding. With over 35 years of experience under our belt, our fully integrated shop sets the standard for quality, efficiency, and innovation in weld fabrication, machining, and equipment installation.

Our Certifications: A Testament to Our Excellence

  • ASME “U” Stamp Certification: Prime is authorized to manufacture pressure vessels both at our state-of-the-art facility and in the field, adhering strictly to the ASME Boiler and Pressure Vessel Code’s rigorous standards. This endorsement underlines our capability to handle projects demanding the highest level of precision and safety.
  • ASME “S” Stamp Certification: We are certified to manufacture and assemble power boilers, showcasing our expertise not only within our facilities but also in field operations. This certification reflects our dedication to delivering top-tier solutions for power boiler manufacturing and assembly, following the stringent guidelines set by the ASME Boiler and Pressure Vessel Code.
  • ASME “R” Stamp Certification: Our authorization for metallic repairs and/or alterations, both in our workshop and in the field, stands as a hallmark of our commitment to maintaining the integrity and performance of pressure vessels and boilers, in line with ASME standards.

Welding and Fabrication Expertise

Our team is certified and qualified according to the prestigious AWS (American Welding Society) codes, ensuring every project meets the highest quality and safety benchmarks. We specialize in welding a diverse array of materials, including:

  • Aluminum
  • Titanium
  • Stainless Steel
  • Cast Iron
  • All forms of steel

Our capabilities are broad and versatile, encompassing MIG, TIG, Sub-Arc, and stick welding techniques. We are equipped with state-of-the-art tooling for large position capabilities, including rolling, shearing, punching, and CNC burning. Our facilities boast large crane capacities, enabling us to handle even the most substantial parts with ease.

Unique Integration of Services

What sets Prime apart is our unique ability to unite large-scale machining and fabrication. This integration allows us to build large, precision products that meet and exceed the expectations of our clients. Whether your project requires intricate design, precise welding, or comprehensive assembly, Prime is equipped to deliver exceptional results.

Commitment to Quality and Innovation

Our commitment to quality, safety, and innovation is at the core of everything we do. With Prime, you gain a partner dedicated to not only meeting your project’s specifications but also exceeding your expectations in terms of quality, timeline, and budget.

Let Prime be your choice for all your certified code welding and precision fabrication needs. Experience the difference that over 35 years of expertise and a dedication to excellence can make on your next project.

Reverse engineered fan fabrication critical weld for high speed operation.


Weld fabrication of fan

Fan fabrication welded to meet customer specifications.

Large Steam drum pressure vessel weld repair and machining

Welding repairs to code

large steam drum head weld repaired and machined

Pressure vessel head designed and manufactured for aerospace industry.

coded ASME presure vessel head weld manufactured.

Pressure vessel head designed and manufactured for aerospace vessel

Complete fabrication of trailer designed to carry heavy missiles

AWS american welding society specification welding

Weld fabrication of missile trailer for lifting missile to the vertical position for installation in Silo.

Manufacture of replacement heat exchanger bundle.

Tube bundle manufacture in pressure vessel heat exchanger.

Manufacture of tube bundle for heat exchanger.

Fabrication of aluminum tooling for aerospace industry.

Aluminum welding to specification.

Aluminum tooling for aerospace industry weld fabricated.