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2、utting knives for combines 1 ( “ ” .) . 2 . . ( ) . KS D 3751, 3 1 . 4 4.1 , , . 4.2 , HRC 54 59 . 5 KS D 3751 STC 5 . KS B 7609: 2007 2 : mm a b d l f g k t 5003.0340.15 6.33.00+35 150.15 5 85 3.40.15 30 1 d afl k gtb 153787 1 145 3(16) (02)26240114 (02)26240148 http:/ KS B 7609: 2007KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Cutting knives for combines ICS 65.060.50 Korean Agency for Technology and Standards http:/www.kats.go.kr