Full Service Mechanical Contractor

Offering a strong diversity of mechanical services

Serving Chicagoland since 1963



We offer innovative design, system fabrication, project coordination and field installation to meet the needs of today’s commercial construction industry.


Heavy Industrial

We offer complete total plant development, installation, process piping, refrigeration, expansion projects, or performing recurring maintenance.


Industrial Refrigeration

Offering turnkey solutions to our customers both local and national.


Food & Process Piping

AMS offers the design and installation of process and utility piping.


Service & Maintenance

We are available for our customers 24/7.


Safety, making zero accidents a reality…

Home Safe Everyday


Quality Assurance

Quality management focused on providing confidence that quality requirements will be fulfilled.


AMS Mechanical Systems, Inc. is proud to provide our customers with the highest quality standards available throughout every aspect of its operations. This level of quality is maintained through the implementation of our “Quality Assurance Program.”

Our program is unsurpassed in assuring our clients that our products and services are provided in strict compliance with industry and customer standards. AMS provides a complete corporate commitment to quality throughout the design, engineering, procurement, fabrication, and inspection process of each and every project. Our Quality Assurance Program includes Certified Inspectors as well as the employment of a full-time Quality Assurance Manager who reports directly to the president.

Both, the American Society of Mechanical Engineers (ASME), and the National Board of Boiler and Pressure Vessel Inspectors (NBBI) have accredited the AMS Quality Assurance Program. As a result, AMS possesses the following Certificates of Authorization:

ASME “A” (Certificate No. 55,678) – Assembly of Power Boilers

ASME “PP” (Certificate No. 31,755) – Fabrication and Assembly of Pressure Piping

ASME “U” (Certificate No. 32,843) – Manufacture of Pressure Vessels

NBBI “R” (Certificate No. 5525) – Metallic Repairs and Alteration



Quality Program

Our highly qualified team has experience in both the Nuclear and Industrial markets. AMS maintains a library of numerous codes and standards including but not limited to: ASME Sections I, II, III, IV, VIII and IX, ASME AG-1, ASTM, AWS, PFI, API, IEEE, NBIC Parts 1, 2 and 3, ANSI and various piping codes including B31.1, B31.3, B31.5, as well as the experience to understand and execute the requirements of those Codes and Standards.

In-House Material Testing Program

Within our current quality system, AMS maintains an extensive amount of calibrated measuring and test equipment, which is utilized to support our in-house material testing program.

Excellence Is In Everything We Do

Scroll to Top