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Standarts According to - Iso-13006/1998
Egyptian standard No.3168//6/2005

Technical Data Standard value Alfa Standard Water absorption  = 6 % , ≥ 10% ≥ 6 % Mohs hardness Class to be determined by manufacturer           ≥ 5 Bending strength  18N/mm2 =23 N/mm2 Themal shock resistance Resistance Resistance Resistance to acids and alkalis GA GA Resistance to stainins ≥3 5 Chemical Resistance GB GB Lengh of sides ± 0.5 % ± 0.5 % Thickness ± 5 % ± 1-3 % Straightness of sides ± 0.5 % * 0.75% ± 0.30% Rectangularity ± 0.6 -1% ± 0.30% Note : surface quality free from visible Defects <<Back