DUBLE

Alloys of common metal; sheets and plates of metal; elbows of metal for pipes; pipes of metal; pipework of metal; chimneys of metal; chimney shafts of metal; rails of metal; flanges of metal collars; bottles metal containers for compressed gas or liquid air; containers of metal for storing acids; containers of metal storage, transport; containers of metal for compressed gas or liquid air; Metal storage tanks; Metal containers for storing compressed gas also featuring a decompress valve incorporated therein

Mechanical condensators; Separating machines for chemical processing; Oil separators; boiler tubes being parts of machines

Cooling installations for water; Portable electric warm air dryers; air conditioning installations; air filtering installations; chimney flues; Desiccating units for producing dried fruits; gas scrubbing apparatus; Industrial apparatus using air to assist in the drying of components in the electronics, semiconductor, circuit board, pharmaceutical, medical, food and beverage industries; heat accumulators; acetylene burners; acetylene generators; hot air cooking ovens; Hot-air space heating apparatus for industrial purposes; cooling vats for furnaces; coolers for furnaces; Boilers for heating installations; water heaters; flare stacks for use in the oil industry; Gas burners for industrial, commercial, domestic use; Space heating apparatus; heating apparatus for solid, liquid or gaseous fuels;Electric heaters for commercial use; Distillation apparatus not for scientific purposes; water distilling units; heat exchangers, not parts of machines; Evaporative air coolers; gas scrubbers parts of gas installations; incinerators; water heaters apparatus; regulating accessories for water or gas apparatus and pipes; steam generating installations