... are made into ceramic rollers. We take unique forming technology,with strict standards of JC413-91 and ISO9001:2000,most technical ... ,UAE,India,Argentina,Poland,Malaysia and other countries and areas with good reputation. Product Features: Ceramic rollers as a refractory kiln furniture ... % LRoundness(mm)≤0.5SizeΦ21-60mm,Length≤4800mm ceramic rollers with diameter 20-60mm