Extreme Service Castables , radhamadhav’s radhamadhavcast, are a complete line of specialty castables blended for specific application and performance needs. Formulations are available for hydrogen and/or carbon monoxide-rich reducing atmospheres, for low thermal conductivity and high resistance to thermal shock spalling, for critical wear areas in high-erosion applications, for exceptional erosion resistance, and wherever higher strength and greater insulation properties are required.