Hongyuan heater

The element tubes consist of a central heating section referred to as a hot zone and two terminal sections called cold ends. The cold ends are infused with silicon metal to bring down their resistance and operating them at a lower temperature. The extreme ends of the elements are coated with aluminum contact surface with low resistance to which the electrical connections are made with braided aluminum straps. Elements are described by giving the- overall length, the heating section length, the diameter and the resistance.