About Us

Mountaineer Fabricators, Inc. designs and manufactures ASME pressure vessels, pre-fabricated piping assemblies and modular skids. Our company began operations in 1923 and has grown to become one of the nation's best fabrication and machining operations. The company was purchased from the original family owners in 2004 and moved into the newly constructed facilities in Nitro , West Virginia .

Bob Hammack, Jr. purchased the company he had managed for many years and retained the workforce with all of its expertise. The average experience of the welders, machinist, engineers, and managers is over twenty years. With a new facility designed to meet today's fabrication, machining and coating requirements, our productivity, workmanship and quality is unparalleled.

Mountaineer Fabricators, Inc. is an ASME certified manufacturer with capabilities to both fabricate and repair pressure vessels, heat exchangers and pressure piping. We currently maintain "U", "R", and "S" Stamps as well as the "NB" stamp indicating our ability to register completed work for our customers. Pre-fabricated "Power Piping" is manufactured to ASME Sections B-31.1 (including ASME Section 1), B-31.3 as well as API. Our welders are certified to both ASME Section IX and API-1104 requirements. Our welding and procedures are extremely advanced and will continue to include new technology as it becomes available. We have an Engineering Department capable of complete design calculation to ASME Section VIII, Division 1 requirements using state of the art software (CompressĀ® by Codeware), and with our up-to-date computer aided design software (AutoCAD) we are ready to handle the standard construction or tackle the tough and out of the ordinary projects.

A large portion of our business includes the manufacturing of prefabricated piping assemblies, launchers/receivers, and valve settings. From general assembly drawings, we create isometric drawings, procure materials, fabricate the piping assemblies, x-ray, inspect, hydrostatic test, blast, and coat to meet the needs of our customers. Our assemblies are utilized by the oil, power, chemical, and natural gas industries to greatly reduce construction cost.

Our goal at Mountaineer Fabricators, Inc. is to provide the customer with the best in quality and cost for all of their fabrication and machining requirements while providing a safe and secure environment for our employees.

Have a Project? Request a Quote. Need Help? Give us a call today. 304-204-1482

We would be happy to provide a quotation for your next project!

Mountaineer Fabricators, Inc. is your trusted source for high-quality fabrication services. With our expertise, state-of-the-art facilities, and skilled professionals, we deliver exceptional results in every project. From custom fabrication to precision machining and welding, we have the capabilities to handle a wide range of fabrication needs. Our commitment to excellence, attention to detail, and customer satisfaction sets us apart. Partner with Mountaineer Fabricators, Inc. for reliable and efficient fabrication services that meet your specific requirements.


  • 9 McJunkin Road
    Nitro, WV 25143

  • 304-204-1482

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