High Strength and Fire Rated Middle Density Calcium Silicate Board for Modern Construction

High strength and fire rated middle density calcium silicate board is the ideal building material for architects and contractors who demand safety, durability, and reliability. Manufactured from tobermorite crystals and natural fibers, this board offers a stable performance that outperforms traditional gypsum or fiber cement boards. With an anti-bending strength exceeding 12MPa and a density range of 1.2g/cm³ to 1.4g/cm³, it provides exceptional structural integrity while remaining lightweight. The material is also 100% asbestos-free, ensuring a green and environmentally friendly solution for both residential and commercial projects.

High strength and fire rated middle density calcium silicate board delivers an impressive 240 minutes of incombustibility according to GB/T9978-1999, achieving a Class A fire-proof rate (GB8624-1997). This makes it the preferred choice for fire-resistant partitions, suspended ceilings, and exterior wall cladding. Unlike conventional boards that may degrade under heat, this board maintains its shape and strength, offering critical evacuation time and reducing property damage. Its low swelling ratio (<0.20%) and shrinking ratio (<0.45%) ensure that fire exposure does not lead to catastrophic structural failure.

High strength and fire rated middle density calcium silicate board is engineered for dimensional stability in all environments. With a water content of less than 10% and minimal expansion or contraction, it resists warping, cracking, and swelling even in high-humidity conditions such as bathrooms, marine constructions, or vessels. This stability is further enhanced by the autoclaving process during production, which creates a dense, hard surface that is both waterproof and damp-proof. As a result, the board requires less maintenance over its long lifetime and provides a perfectly flat surface for interior dry wall decoration or paneling.

High strength and fire rated middle density calcium silicate board comes in versatile standard sizes including 1200mm2400mm, 1220mm2440mm, and 1200/1220mm*3000mm, with thickness options ranging from 6-30mm. The grey-colored board features a textured surface and square edges, making it easy to cut with ordinary tools and fast to install. Whether used for lightweight grouting panels, acoustic insulation, or thermal barriers, its workability reduces labor costs and speeds up project completion. Each board is packaged on wooden pallets, with 8 pallets fitting perfectly into one 20GP container.

High strength and fire rated middle density calcium silicate board meets strict international safety and environmental standards, including ISO, SGS, and GB6566-2001 for radioactivity (Class A decoration materials). It is certified to contain no sulfur, chlorine, or other toxic substances, making it safe for use in schools, hospitals, and residential interiors. Additionally, its antisepsis and moth-proofing properties prevent decay and pest infestation, while the high-density composition provides excellent sound insulation and weather resistance. With a production capacity of 30,000,000 m² per year and delivery within 10 days, the Aierjia brand ensures reliable supply at a competitive price.