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High temperature calcium silicate core for fireproof and sound insulation door High temperature calcium silicate core for fireproof and sound insulation door is a kind of inorganic and non-combustible material with stable physical and chemical properties. The characteristics are high temperature resistance, low thermal conductivity, good performance of soundproof and insulation, lightweight and high special strength. It does not deform in normal temperature or moist air. Free from asbestos, is a kind of green building material, haven’t any irritant smoke when burning and high temperature. This kind of material had already widely used as the cores of fireproof and sound insulation door in various field. The limited fire resistance is up to *0min. even **0 minutes. This product has exported to USA, Canada and Japan etc. And have already earned more honors from the customers. Physical Performance Core for steel door Bulk Density:**0~**0kg/m3 Temp. limit:***0℃ Core for wood door Bulk Density:**0~**0kg/m3 Temp. limit:***0℃ Length × Width (mm) **0× **0, ***0× **0, ***0× **0 Thickness (mm) *0~**0 Tolerance (mm) Length, width ±2, Thickness ±0.5 According to the requirement of customer, we can make some special proceeding, such as making tenon and groove, joint together, etc.