... sodium silicate (soluble glass)Material availablestainless steel, carbon steel, Alloy Steel, WCB, Tool Steel and etc.Weight10g-200kgAccuracyclass CT4-CT7Surface ... :anneal, quenching, normalizing, carburizing,polishing, platingMachiningCNC and NC machining, turning, milling, drilling, boring, threading, grinding machines ... CE/PED Certified by TUV Precision part of Stainless steel casting hardware