Quality Control

Hayes Mechanical has the distinction of being one of the few companies in the United States holding five (5) A.S.M.E. Code symbol stamps and the National Board "R" stamp. They are as follows:

A.S.M.E.

(A) Assembly of Power Boilers (Field)

(H) Heating Boilers except Cast Iron (Shop/Field)

(S) Manufacture and Assembly of Power Boilers (Shop/Field)

(PP) Fabrication and Assembly of Pressure Piping (Shop/Field)

(U) Manufacture of Pressure Vessels (Shop/Field)

National Board of Boiler & Pressure Vessel Inspectors (N.B.I.C.)

(R) Repair and/or Alterations (Shop/Field)

HAYES CARRIES THE FOLLOWING CERTIFICATES :

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