Ceramic anchors with 60% alumina. Refractory anchors have a high alumina content commonly called “turrets”, usually used for the construction of flat concrete vaults and or walls. Available in various lengths with and without hole.
The metal anchors are usually in AISI 304 or 310, they are of three types: for refractory concrete, to install ceramic fiber (multilayer or modules) see example below or for the turret caps.