... & long working life 4, Up to 1700C Order sample:d=6mm, c=12mm, Le=200mm, Lu=180mm, a ... =30mmPlease specify as: dia6/12x200x180x30mm (dia d/cxLexLuxa mm)d = the diameter of hot zonec = the diameter of ... furnace temperature 1700.C) Standard sizes:M1700 type (d/c): dia3/6, dia4/9, dia6/12, dia9/18, dia12/24M1800 ... type (d/c): dia3/6, dia4/9, dia6/12, dia9/18, dia12/ ...