... 9/18, 12/24 etc. Type: I, U, W, Pole, and U-right, etc MoSi2 heating element:Molybdenum ... sizes, All characterized by long life and consistant perfomance. 1. Specification:Grade:1700C/1800CDia:3/6, 4/9, ... 9/18, 12/24 etc. Type: I, U, W, Pole, and U-right angle shapes, etc And we ... between 400C and 700C for a long time, otherwise the element will be cremated under the strong oxidizing function ...