HG/T 20592  法兰盖 BL 100(B)-10 G1=SC300F b1=34 &a

BL100(B)-10G1=SC300F b1=34 &a

PL 50(B)-10 RF

so15(b)-16 rf s=3B1=78amD=215 B=1

wn50(b)-40rfs=500(b)-16rfrum

WN 50-150 RF

so 200-150 rfF2 cb=30(392SC/0 d=345h12f

pl50a-6rfRFfmRFF δ0=10,c=6 NA=4

PL450(B)-10 RF b=3 BB==68-1600150 C=/MM´0=148080

BL