... :1700C/1800C Dia:3/6, 4/9, 6/12, 9/18, 12/24 etc. Type: U, W, Pole, and ... straight or bent elements in a wide range of shapes and sizes, All characterized by long life ... Specification:Grade:1700C/1800CDia:3/6, 4/9, 6/12, 9/18, 12/24 etc. Type: I, U, W, Pole, ... Using Temperature Under the Different Atmospheres AtmosphereThe Maximun Using Temperature of Elements17001800No2 ,Co2 ,O2 ,Air1700°C1800°CHe ,Ar ...