Raw Materials: Paper Pulp, Cement, Quartz Sand and Inanimate matter

Thickness Range: 6-20mm
Standard Size: 1220x2440mm, 1200x2400mm
Density: 1.40-1.50 kg/m3

Fire Resistance: In accordance with BS476 Part20&22:1987; GB8624 Class A (CNS6532)

Thermal conductivity: <0.20w/mk

Coefficient of Thermal Expansion: <5x10-6m/m.k

Coefficient of Moisture Expansion: <0.20%

Coefficient of Dry Shrinkage: <6x10-2

Bending Stress: Transverse: ≧15.0N/mm2 Vertical: ≧13.0N/mm2

Impact Strength: >4.0KJ/m2

Screw Pullout Force: ≧90N/mm

Moisture Content: <10%

Water Absorption: <15%
Anti-freezing: No distortion after 25 repeated cycles of freezing and thawing

Radioactivity: conforming to GB6566-2001 Grade A Standard

Edges: Square

100% asbestos free

Color: light grey or dark grey