Automatic stokers, steam scrubbers and driers, heat exchangers for effecting heat exchange between fluids, including air heaters, fuel economisers and feed water heaters; boiler tubes and pipe ducts, pressure vessels including containment vessels, and parts of all the aforesaid goods, furnace grates including chain grates; oil and coal burning equipment; furnaces, duct-work; feed water de-aerators, water demineralising plant; fuel hoppers, fuel burners and parts of all the aforesaid goods, all being goods included in this class

Tubulous vapour generators, other vapour generating installations, vapour superheaters and reheaters, de-superheaters apparatus for separating water or other impurities from steam, feed water heaters, air heaters for use in connection with boilers, soot blowers, machines for cleaning piping, conveying plant, cranes, tipping machines, hoists, pulverising machines, (Mills - grinding), gears, parts of machines, and parts of all the above,

Tubulous vapour generators, vapour generating installations, air heaters, liquid, gaseous and solid fuel burners, fuel economising apparatus, mechanical stokers, furnaces, and parts of all the above,