aalberts

Drain traps [valves] of metal; water-pipe valves of metal; steel pipes; metal fittings, couplings, connectors and clips for cables and pipes; pipes and tubes of metal; reinforcing materials of metal for pipes; rotating junctions of metal for pipes; metal pipes and tubes for liquid and gas transfer; metal tubing and tubing couplings for joining and terminating pipes; containers of metal for chemicals, compressed gases and liquids; water tanks of metal for industrial purposes; metal drainage pipes; ducts of metal for ventilating and air- conditioning installations. Heating, cooling, steam generating and air conditioning installations and apparatus; heating and cooling apparatus for dispensing hot and cold beverages; thermostatic valves as parts of heating installations; steam heating apparatus for industrial purposes; sprinkler systems for irrigation; irrigation apparatus for agricultural and horticultural use; swimming pool filters; swimming pool heaters; waste water treatment and purification installations and apparatus; air valves for steam heating installations; steam superheaters for industrial purposes; ionization apparatus for the treatment of liquids and gases for industrial, commercial or agricultural use; temperature-controlled food and beverage dispensing units, other than vending machines; water distribution installations; gas purification apparatus; dosing valves [parts of heating or gas installations]; regulating accessories for water or gas apparatus and pipes; safety accessories for water or gas apparatus and pipes. Construction, installation, maintenance and repair of gas and water supply and distribution apparatus; construction, installation, maintenance and repair of gas and water pipelines; construction, installation, maintenance and repair of water pollution control equipment and water purifying apparatus; construction, installation, maintenance and repair services relating to water irrigation and rainwater drainage systems; construction, installation, maintenance and repair of environmental control systems; construction, installation, maintenance and repair of air-conditioning control systems; construction, installation, maintenance and repair of food and beverage dispensing units; provision of information relating to the aforementioned services. Heat treatment of metal surfaces; treatment of materials by laser beam; treatment and coating of metal surfaces; heat treatment of pipes and tubes made of metal; treatment of materials using ultrasonic waves to modify their properties; treatment of metal parts to prevent corrosion using hot-dip galvanizing and powder coating processes; surface finishing of metal articles; coating and surface finishing of machines and tools; custom manufacture of machines and tools with a protective surface coating; processing of metal surfaces by precision grinding and abrasive polishing; application of thin films on the surfaces of objects by means of chemical, mechanical, thermal, thermomechanical, chemical vapor deposition, physical vapor deposition and vacuum deposition processes; provision of information relating to the aforementioned services. Engineering services relating to gas and water supply and distribution systems; engineering services relating to gas and water pipelines; engineering services relating to of water pollution control and water purifying systems; engineering services relating to water irrigation and rainwater drainage systems; engineering services relating to environmental control systems; engineering services relating to air- conditioning control systems; technical design and planning of pipelines for gas, water and waste water; design and development of valves, regulators and controls for gas and water supply and distribution systems; design and development of food- and beverage dispensing units; provision of information relating to the aforementioned services.