Pyrotek offers several grades and types of technically advanced insulating refractory boards for molten metal applications. The boards offered include N-17, N-14, N-600, B-3, B-3A and CS-1. These non-asbestos materials are available in sheets or as precision machined components. Detailed specifications for each type of board outline the most popular applications for each material. These are available upon request. Our machine shops are equipped with CNC tooling equipment to produce complex components to customer specifications.