37 Installation, maintenance, servicing, repair, refurbishment, replacement, modification and dismantling of cranes, lifting, pulling and hoisting apparatus, construction equipment, pumps, pumping equipment, hand tools, welding and cutting equipment, air compressors, blasting and painting equipment, hoses, and parts and fittings for all the foregoing; rental of cranes, lifting, pulling and hoisting apparatus, construction equipment, pumps, pumping equipment, hand tools, welding and cutting equipment, air compressors, blasting and painting equipment, hoses, and parts and fittings for all the aforegoing, all being for the purpose of installation, maintenance, servicing, repair, refurbishment, replacement, modification, and dismantling; installation, maintenance, servicing, repair, refurbishment, replacement, modification, dismantling and rental of engines, gearboxes, winches and booms for cranes and lifting equipment; rental of equipment for construction, repair, installation and maintenance purposes, namely, nitrogen equipment, in the nature of nitrogen pumping equipment, nitrogen boosters, nitrogen tanks and nitrogen membrane units, rigging lofts, tanks and hydraulic workshop containers in the nature of steel structures; rental of equipment for construction, repair, installation and maintenance purposes, namely, air filter lubricators in the nature of air filtering apparatus, air receivers in the nature of air filtering apparatus, breakers, descalers, cable jacks, cable rollers, diesel bowsers, air-powered and electric drills, air-powered and electric grinders, hydraulic equipment, multimeters, air saws, electric saws, scaffolding, threaders and winches; installation, commissioning, maintenance, servicing, repair, refurbishment, replacement, modification, upgrading and dismantling of hydraulic apparatus and hydraulic equipment; rental of hydraulic apparatus and equipment for the purposes of construction, repair, installation and maintenance; installation, commissioning, lagging, lining, maintenance, servicing, cleaning, descaling, repair, refurbishment, replacement, modification, upgrading, decommissioning and dismantling of pipework and/or pipelines; repair and refurbishment of accumulators; maintenance, servicing, repair, refurbishment, replacement, modification and upgrading of pipe handling equipment, including pipe clamps, pipe straighteners and pipe tensioners; installation of tubular linings in pipelines; installation, commissioning, maintenance, servicing, repair, refurbishment, replacement, modification, upgrading, dismantling of heat exchangers; construction of steel fabrications; cleaning of tanks and vessels, namely, storage tank cleaning and ship cleaning; cleaning by water jetting, namely, cleaning of metal surfaces; digging and excavation services; demolition services; painting services; scaffolding services, namely, scaffolding erection and management; repair, lining and coating of concrete, namely, applying protective surfaces to concrete; preparation of reports on the foregoing; providing information, advisory and consultancy services relating to all of the aforementioned services, including the provision of computerised information