Awọn kastireti refractory refractory ipon ti wa ni ṣe ti refractory akojọpọ, refractory lulú.binders ati awọn miiran additives.
Kamẹti idabobo idabobo iwuwo-ina jẹ iṣelọpọ pẹlu apapọ iwuwo ina to gaju, lulú, admixture ati dinder