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Introduction DSfiber cement board is a high quality calcium silicate architectural board reinforced with selected cellulose fibres and fillers. It is 100% free from asbestos, sepiolite, inorganic fibres or formaldehyde. The board is versatile and suitable for general use of internal and direct weathering applications when used in conjunction with external grade texture finish or other surface coating in new construction or refurbishment projects. It is an economical, non-combustible building board material to replace traditional concrete / clay block or cement-bonded particle board for the construction of non-load bearing elements. Unlike most plywood, cement-bonded particle boards, gypsum boards or magnesium boards,DS board is light weight, strong, moisture resistant, will not warp, swell or decay in wet area. The board is manufactured to ISO 9001 quality management system and ISO14001 environmental management system, and has obtained the Green Product Label Award issued by National Environment Protection Bureau. Size Thickness4mm 25mmWidths1220 mmLengths2440 mmNote: All metric / standard boards come with cutting square edges. Recessed edges may be available upon request. Other sizes are also available and can be produced to special order. Manufacturing Tolerances Length tolerance+/- 5mmWidth tolerance+/- 5mmThickness tolerance+/- 0.3mmDiagonal tolerance+/- 5mmPhysical properties ItemIndexUnitDensity≥g/cm3Thermal Conductivity≤0.25W/(m.k)Water Absorption≤40%Water Contain≤10%Moisture Movement ≤0.25%Heat Shrinage≤0.5%Non-combustibilityGB 8624 Class A1/BendingStrengthOven dryCross≥12.0MpaParallel≥9.0MpaREMARK;Please contact our us if you need more technical index.SAFETY CPABILITY ItemIndexAsbestos Including100% asbestos freeSafe for applicationRadioactive<1.0 IRaSafe for application<1.0 IrSafe for applicationNon-combustibilityA1The highest gradeKEY BENEFITS Fire Resistant: ‘Class A’ (0 Flame / 0 Smoke)Noncombustible: (10-minute duration)Mold/Fungus Resistant: Does not support mold/fungus growthMoisture Resistant: Resistant to weather, freeze/thaw & standing waterTermite/Vermin Resistant: Provides no food value to insects/verminImpact & Abuse Resistant: Made from durable Portland CementAcoustic Performance: Has a density of 77lbs/ft3Workability: Installs quickly using standard carpentry tools and equipmentDimensionally Stable: Exhibits excellent resistance to dimensional changes when exposed to variations in temperature & moistureEnvironmentally Friendly: Composed of 28% post-industrial wood content, contains no added HCFC’s or VOC’s, no added formaldehyde or asbestos, reduces materials on the jobA few reasons whyour boards benefits: Up to 76% fewer seamsNever requires painting4 times more insulating power45% more noise reductionGuaranteed to let your home breathe300% more impact protectionImproved energy-efficiencySeal out dust and dirt from outsideReduce noise from the outsideEasy to cleanEnhanced securityResists damage from cold, windy climatesResists damage from wet, humid climatesResists flame.Resists damage from flying debrisResists insect damage.Resists cracking.APPLICATIONS WALLSExcellent for interior & exterior walls, partitions, curtain walls, fire-stops & moreGreat substrate for exterior finish materialsAbuse resistantHEALTH & SAFETYDSfiber cement board is formulated without asbestos, sepiolite or any inorganic fibres. When using power saws or sanders in a confined space, dust extraction equipment is recommended to control dust levels. Fixers must ensure that they work from adequate and safe platforms where necessary.Note: All physical performance values of productsof the figures may be changed dependent on the test method used.