1、 KSKSKSKS KSKSKSK KSKSKS KSKSK KSKS KSK KS KS B 5212 KS B 5212 :2009 2009 9 3 http:/www.kats.go.krKS B 5212:2009 : ( ) ( ) () ( ) ( ) : (http:/www.standard.go.kr) : : 1976 7 13 : 2009 9 3 2009-0463 : : ( 02-509-7230) (http:/www.kats.go.kr). 10 5 , . KS B 5212:2009 Cylindrical squares 1 . 2 . . ( ) .
2、 KS B 0410, KS D 3751, KS D 4301, 3 2 , 1 . 1 :mm 400 600 800 1 000 1 200 150 200 300 400 600 4 1 2 . KS B 5212:2009 2 1 () 2 () 5 5.1 . a) 1 2 . b) , . c) KS B 0410 60 B C . 5.2 2 . (B) t() 80 % . 2 :mm L 150 200 300 400 600 800 1 000 1 200 D 70 80 100 120 160 200 240 280 t () 10 10 12 12 15 15 20
3、20 5.3 . a) () , 4 . b) () , . . c) . (D) (t) (B) (D) (B) (t) (L) (L) KS B 5212:2009 3 d) 90 A, B, C, D . e) . 6 , 3 , , , , . . 3 KS D 4301 GC 250 . KS D 3751 STC 85(STC 5) . HV 450 . 7 1.6S, 0.8S . 8 4 . 4 L mm m 150 200 300 400 600 800 1 000 1 200 2.8 3.0 3.5 4.0 5.0 6.0 7.0 8.0 4 . ) 200 2 ( L m
4、 9 5 . KS B 5212:2009 4 5 L (mm) 150 200 300 400 600 800 1 000 1 200 ( m) 2.8 3.0 3.5 4.0 5.0 6.0 7.0 8.0 5 . ) 200 2 ( L m 10 10.1 6 . 6 :mm L 300 5 400 10 10.2 AC, BD (母) 3 , . 10.3 . a) 3 , . A, B, C, D (母) , . , 2 . 3 KS B 5212:2009 5 b) 4 2 , A a , 180 C C , AC D 1 , D 2 , A, C . A ) ( ) ( 2 1
5、2 1 D D c a B ) ( ) ( 2 1 2 1 D D a c , . B, O , . 1 , , I , . 2 , , , . 4 11 , 5., 6., 7., 8. 9. . 12 . KS B 5212 600 mm 13 . D 1 D 2 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS B 5212 :2009 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Cylindrical squares ICS 17.040.30 Korean Agency for Technology and Standards http:/www.kats.go.kr