... atmosphere without any protection atmosphere. 4. It is extensively used in the fields of metallurgy, ceramics, glass, machinery, analysis test, ... any protection atmospherePlease kindly indicate the following dimensions identified in the element:Shape:ED,DB,U,W,SC,SCR,etc. Heated ... to contact us.Types: Rod\ U-shape\ W-shape\ single spiral\ double spiral\ Slot In case of any inquiry or order, please ...