The outer nozzles of the pan are the conduits for transferring the molten heat into the tandish after the slide gate plates are opened. The outer nozzle of Patil is in contact with the external environment on one side and with the molten material on the other side. Therefore, these types of nozzles have high resistance to thermal shock. High strength and proper melt flow from the pot to the tank are important properties of the external nozzles of the pot.