FURNACES AND PARTS THEREOF, MUFFLES AND PARTS THEREOF, RETORTS AND PARTS THEREOF, OIL AND GAS BURNERS AND PARTS THEREOF, LEHRS AND PARTS THEREOF, HEARTHS AND PARTS THEREOF, KILNS AND PARTS THEREOF, OVENS AND PARTS THEREOF, RECUPERATORS AND PARTS THEREOF, REGENERATORS AND PARTS THEREOF. AIR AND GAS HEATERS AND PARTS THEREOF, COMBUSTION CHAMBERS AND PARTS THEREOF. FURNACE ARCHES. FURNACE ROOFS, FURNACE LIDS. FURNACE-ROOF SECTION SHAPES. FURNACE-LID SECTION SHAPES, SECTION SHAPES FOR COMBUSTION ...

FURNACE-LININGS, FIRE BRICKS AND BLOCKS, AND BULK MATERIAL FOR USE IN MAKING THE SAME