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2、4208: 2006(2011 ) Industrial floor brick 1. ( .) . . 2. . . KS L 3110 KS L 3112 KS L 4201 3. 1 . 1 1 T . 2 H . 3 M . 4 L . 4. 4.1 2 . 2 N/cm2 % % 1 686 10 2 686 6 20 3 1 372 2 4 1 372 1 8 4.2 , 3 . L 4208: 2006 2 3 mm mm 51 1.6 51 101 3.2 101 228 4.8 228 305 6.4 4.3 4 . 4 mm mm 228 1.6 228 305 2.4 5. 5.1 KS L 4201 7.1 . 5.2 KS L 3110 . 5.3 KS L 4201 7.4 . 5.4 KS L 3112 . 6. . 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KSKSKSSKSKS KSKS SKS KSKS SKSKS KSKSKSKorean Agency for Technology and Standards http:/www.kats.go.kr KS L 4208: 2006 Industrial floor brickICS 91.100.20