7
Machines for cleaning air-cooled heat exchangers; cleaning implements, namely wheeled cleaning implements on wheels or casters, and mechanical brushes, fans, belts, ropes and chains, jets for injecting cleaning liquids under high pressure against the area that needs to be cleaned, pumps, and pumps mountable on a cleaning wagon, and valves, pipes and flexible tubes for conveying washing fluid from pumps to the jets, all for cleaning air-cooled heat exchangers; appliances, namely, wheeled cleaning implements on wheels or casters, and mechanical brushes, fans, belts, ropes and chains, jets for injecting cleaning liquids under high pressure against the area that needs to be cleaned, pumps, and pumps mountable on a cleaning wagon, and valves, pipes and flexible tubes for conveying washing fluid from pumps to the jets, all for washing air-cooled heat exchangers; washing machines for air-cooled heat exchangers; process system comprised of wheeled cleaning implements on wheels or casters, and mechanical brushes, fans, belts, ropes and chains, jets for injecting cleaning liquids under high pressure against the area that needs to be cleaned, pumps, and pumps mountable on a cleaning wagon, and valves, pipes and flexible tubes for conveying washing fluid from pumps to the jets, all for cleaning air-cooled heat exchangers; and machines for washing air-cooled heat exchangers
37
Providing cleaning facilities for air-cooled heat exchangers; cleaning of air-cooled heat exchangers; maintenance and repair for air-cooled heat exchangers; and washing of air-cooled heat exchangers