... life Order sample:d=6mm, c=12mm, Le=200mm, Lu=180mm, a=30mmPlease specify as: dia6/12x200x180x30mm ... heat furnace temperature 1650.C )M1800 (heat furnace temperature 1700.C) Standard sizes:M1700 type (d/c): dia3/6, dia4/ ... , dia6/12, dia9/18, dia12/24M1800 type (d/c): dia3/6, dia4/9, dia6/12, dia9/18, ... used in the temperature between 400C and 700C for a long time, otherwise the element will be cremated ...