282114 Parts of furnace burners, furnaces and ovens

28211430 Parts for furnace burners for liquid fuel, for pulverized solid fuel or for gas, for mechanical stokers, mechanical grates, mechanical ash discharges and similar appliances 28211450 Parts for non-electric industrial or laboratory furnaces and ovens 28211470 Parts for industrial or laboratory electric, induction or dielectric furnaces and ovens or heating equipment