Non-asbestos microporous calcium silicate product (temperature resistant 650°C ), the main chemical structure is tobemorite, with low thermal conductivity, high strength, high temperature, non-flammable, easy to process, no corrosion, no pollution, etc. features, used in electric power, heat pipes, chemical, metallurgical and other industries, equipment, thermal lines, boiler bodies, kiln bodies. In recent years, it has been widely used in the direct heating of steel pipes, plastic steels and glass-reinforced plastics for heating pipes of thermal power plants, and can be processed into shaped products.