07
Crude oil refining machines; boiler tubes; blowers for the
suction, compression and transport of gases
11
Apparatus for heating, steam generation, cooking,
refrigeration; heat accumulators; steam accumulators;
acetylene burners; acetylene generators; hot air apparatus;
air cooling apparatus; air filtering apparatus; air
reheaters; air driers; feeding apparatus for heating
boilers; structural plates for ovens; coolers for furnaces;
petrol burners; gas burners; burners; apparatus for loading
furnaces; platforms for loading furnaces; air valves for
steam heating installations; heating apparatus for solid,
liquid or gaseous fuels; heating installations; distillation
columns; gas condensers [other than parts of machines]; air
quality control installations; control and safety
accessories for gas pipes; heating elements; distillation
apparatus; heat exchangers; gas scrubbing apparatus;
evaporators; filters [parts of industrial facilities];
furnaces [except for experimental furnaces]; shaped fittings
for furnaces; furnace grids; ovens [except for experimental
ovens]; refrigerating apparatus and machines; control and
safety accessories for gas apparatus; control and safety
accessories for gas pipes; gas burners; steam generators
[other than parts of machines]; cooling installations for
liquids; petrol burners; refining towers for distillation;
water heaters [apparatus]; heat regenerators; cooling
apparatus and facilities; pressurized water tanks; level
controlling valves in tanks; coils [parts of distilling,
heating or cooling installations]; safety accessories for
water or gas apparatus and pipes; boiler pipes [tubes] for
heating installations; flare stacks [oil industry]; steam
generating installations
40
Refining services; energy production services; oil treatment
services; processing of petroleum products