Hydraulic machines, tools and apparatus, namely, hydraulic stud tensioners, hydraulic hammers, power-operated hydraulic wrenches, power-operated hydraulic bolt torqueing wrenches, hydraulic tensioners, hydraulic bolt torquing equipment, valves and pumps used in connection with hydraulic tensioners, hydraulic hose arrangements and hydraulic closure systems, hydraulic closure systems for steam turbines, hydraulic pumps, hydraulic flange pullers, nut splitters, non-metallic hoses for transferrin...