Clay bonded graphite Crucible High purity and fine grain graphite,long using life. ISO9001 Clay bonded Graphite Crucibles are manufactured by our company by using high purity and fine grain graphtie as raw material.It is mainly used for melting of copper,etc.the specification is as following, Unit:mmTYPEOpening Outer DiaOpeningInner DiaBottom DiaheightSMNt171554587SMNt264. ...