Industrial Code Welding, Pipe Fabrication & Installation Across the U.S.

Certified Welders You Can Count On


At Hayes Mechanical, we take pride in our expertise and commitment to providing top-quality welding services for industrial and commercial clients. With locations in Chicago, Omaha, St. Louis, Pittsburgh, Saginaw, Minneapolis, and Phoenix, we offer comprehensive specialty welding capabilities to meet your specific needs. Our skilled and test-certified welders possess extensive knowledge and experience in various welding techniques, ensuring precise, durable, and quality-certified results. Whether you require repairs, new installations, or maintenance, our team is dedicated to delivering quality assured craftsmanship and customer satisfaction.

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What Is Industrial Code Welding & Pipe Fabrication/Installation?


Industrial Code Welding & Pipe Fabrication/Installation refers to specific areas and requirements of welding that involve the joining of materials, in complex and/or specialized applications required in many factories, industrial processes, and like facilities. It goes beyond the standard welding techniques and requires specialized skills, equipment, knowledge, and certification and often involves working with exotic metals, such as titanium, stainless steel, aluminum alloys, or other materials that possess unique properties. This type of welding is typically used in industries where exceptional strength, durability, and corrosion resistance are required, such as in the manufacture of pressure vessels, industrial tanks, heat exchangers, and other critical components. Industrial Code Welding & Pipe Fabrication/Installation plays a crucial role in ensuring the integrity and safety of these structures, as well as meeting specific industry quality standards and regulations.

The Welding Process


At Hayes Mechanical, our welding procedures are meticulously designed and executed to ensure the highest level of quality, precision, and safety. We understand the critical role that welding plays in various industrial applications, particularly in specialty welding Industrial Code & Pipe Fabrication/Installation, where exceptional strength and integrity are paramount. Our experienced, skilled, and certified welders follow industry-standard procedures and adhere to rigorous quality control measures throughout the welding process. We utilize advanced welding techniques, state-of-the-art equipment, and welding procedures tailored to each project's specific requirements. Whether it involves working with exotic metals, pressure vessels, or intricate components, our team is well-versed in the latest welding technologies and best practices. We prioritize thorough planning, meticulous preparation, and diligent execution of industry standards and codes to deliver welding solutions that meet or exceed the highest standards. With Hayes Mechanical, you can trust that our TIG welding, MIG welding, and stick welding procedures are geared toward providing reliable, durable, and precision-engineered results for your industrial and commercial welding needs.

Our Comprehensive Qualification Process


The typical process for qualifying a welding procedure involves several steps. First, a preliminary welding procedure specification (pWPS) is created, which outlines the details of how a qualification test piece will be welded. This includes specifications for the materials, weld configuration, test piece size, welding process(es), welding consumables, and all the necessary welding parameters. Next, the test piece, often referred to as a "coupon," is welded according to the preliminary welding procedure. Throughout the welding of the qualification coupon, the actual welding variables used are meticulously recorded on welding record sheets, also known as "running sheets." Once the coupon is completed, it undergoes testing as required by the welding code and any additional specifications set by clients. If all the tests meet the specified requirements, the qualification is considered successful. A document known as the procedure qualification record (PQR) is then prepared, which includes a record of all the welding variables recorded during the process and the achieved test results. It's worth noting that the terminology for this document may vary in different regions, with names such as Welding Procedure Qualification Record (WPQR) or Welding Procedure Qualification (WPQ) being commonly used. However, it is recommended to avoid using WPQ to prevent confusion with a "Welder Performance Qualification." Finally, the Welding Procedure Specification (WPS) is developed using the PQR as a supporting document. The WPS includes the qualified ranges of the different welding variables, as defined in the relevant welding code. These qualified ranges are typically referred to as "essential variables" within the welding codes.

indoor stainless steel piping

Contact Hayes Mechanical 


When it comes to specialty welding services, Hayes Mechanical is your trusted partner. With our extensive presence across Chicago, Omaha, St. Louis, Pittsburgh, Saginaw, Minneapolis, and Phoenix. Our welding shops are well-equipped to handle your needs with precision, quality, and efficiency. Our team of experienced welders are committed to delivering top-quality workmanship and exceeding your expectations. Whether you require welding for repairs, installations, or ongoing maintenance, we have the knowledge, skills, and resources to tackle even the most complex projects. Don't compromise on the integrity of your industrial welding work - choose Hayes Mechanical today. Contact us to discuss your requirements and let us provide you with the exceptional welding services you deserve.


(773) 784-0000 Office
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