... furnace temperature from 1300C to 1800C. Order sample: d=6mm, c=12mm, Le=200mm, Lu=180mm, a=30mmPlease specify as: dia6 ... . M1700 (heat furnace temperature 1650.C ) M1800 (heat 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, dia12/24 ...