Description: Class 37: Construction and contractor services specializing in the installation and maintenance of both high and low voltage systems common in complex heavy industrial, manufacturing, and commercial facilities; replacement and refurbishment of high voltage substations and switchgear; installation services, namely, installation of high voltage substations and switchgear; electrical and instrumentation contractor services; process piping installation, steel erection, mechanical equipment rigging and installation, mechanical and electrical plant maintenance services, construction and construction project management services required for industries such as chemicals and polymers, petrochemicals, pharmaceuticals, power generation, advanced manufacturing, pulp and paper, government and other complex manufacturing industries
Class 40: Custom process piping fabrication services, process piping welding services
