37 Industrial maintenance turnaround services, namely, scheduled repair and maintenance of equipment and machinery in the oil and gas, petrochemical, chemical, power, and refinery industries; specialty field maintenance services, namely, maintenance of industrial equipment and machinery in the oil and gas, petrochemical, chemical, power, and refinery industries; turnaround services, namely, maintenance, repair installation and replacement of industrial equipment and machinery in the oil and gas, petrochemical, chemical, power, and refinery industries; cleaning of industrial equipment and machinery in the oil and gas, petrochemical, chemical, power, and refinery industries; heat exchanger repair services; restoration of industrial equipment and machinery in the oil and gas, petrochemical, chemical, power, and refinery industries; demolition services, namely, demolition of industrial plants; catalyst changeout services, namely, replacement of catalyst machinery in the oil and gas, petrochemical, chemical, power, and refinery industries; coatings application services; heat transfer equipment services, namely, maintenance and repair; industrial bolting services, namely, installation and maintenance of bolts for industrial equipment and machinery; tower and drum services, namely, repairs, maintenance, inspection and repair of refining and petrochemical towers and drums; bundle extraction, namely, extraction of heat exchanger bundles; blind to blind services, namely, blind flange replacement and removal; crane and rigging services, namely, lifting and transportation of heavy loads in the oil and gas, petrochemical, chemical, power, and refinery industries; consulting services in the field of industrial turnarounds, namely, advising on matters related to the scheduled repair and maintenance of equipment and machinery in the oil and gas, petrochemical, chemical, power, and refinery industries