A connecting tube is a critical component used for connecting and transmitting thermoelectric energy, typically made of heat-resistant materials such as ceramics or special metal alloys. The main function is to maintain stable electrical connections and transfer thermal energy in high temperature environments. The design of heat-resistant connecting pipes considers stability and durability in high-temperature environments, and can withstand thermal shock and temperature changes without damage. Wear resistant thermocouples also need to have wear resistance when transmitting thermoelectric energy. Usually used in industrial furnaces, power generation equipment, and high-temperature laboratory equipment.