super balck polished tile

Technical Standard standardeuropeantofa ceramicsrequeststandardwater absorption≤0.5%≤0.5%≤0.1%Breaking strength≥1300N≥27MPA≥1800N≥40MPARupture modulus≥35MPALength±1.0mm±0.6%±0.5mmWideth±1.0mm±0.6%±0.6%Thickness±5.0mm±5%±4%Surface smoothness±0.2%±0.5%±0.15%Edge Straightness±0.2%±0.5%±0.15%Squareness±0.2%±0.6%±0.15%Wearing strength≤175mm3<205mm±0.15% No crackle and crack<9*10-6k-1≤160mm3Linear thermalafter rapid coolingexpansion coefficientand rapid heating cycle for 10 timesTheermal vibratilityNo crackle ro spallingEN176MATCHafter frost resistace testFrost resisting property≥55APPROVALNo crackle ro spallingafter frost resistace testGlossiness1Ra≤1 1r≤1.3 ≥60Radioactivity 1Ra≤1 1r≤1.2