Runfulai specialized in producing alumina OBE (open both ends) tubes & insulators, including 99%, 99.5%, 99.7% alumina tubes. We produce small-diameter tubes with extruding, slip casting & injection methods, and big-diameter tubes with slip casting & isopressing methods, these tubes are well used for insulators, wear-resistant, high temperature & electric industries. We also produce COE (closed one end) tubes for thermocouple protection, and the small diameter OBE tubes ( single hole & multiple bores) used as thermocouple insulators. Precise cutting & grinding finish can be done well in our
workshop. We also provide purity 60%, 75%, 92%, 95%, 97% alumina tube products.