Continuous furnace for tubular firing material

Conveyor furnace for firing pipe-shaped objects (26), with the following characteristics:

• 2.1.1 a furnace floor (12),
• 2.1.2 a furnace ceiling (10),
• 2.1.3 two lateral furnace walls (14, 16), which connect the furnace floor (12) with the furnace ceiling (10), forming a furnace channel (18)
• 2.2 the furnace ceiling (10) has at least one continuous opening (18) running in the axial direction of the furnace channel (18),
• 2.3.1 at least one transport unit (32) that extends from a motor section (32L, 32R) above the furnace ceiling (18) through the opening into a transport section (38) in the furnace channel (18), and
• 2.3.2 which can be driven along the opening (20),
• 2.4 the transport section (240) is designed to hold, in a horizontal position, at least one pipe-shaped object (26),
• 2.5 in the furnace channel (18) below at least one part of the object to be fired, which is freely achievable, a device (28) is arranged, onto which the object first rolls up, with its freely achievable part, and then rolls down.