HG/T 20592  法兰 WN 50(B)-63 FM S=3-1F=/4hrf/300 wRFb34RF618 A=5RB)

WN50(B)-63 FM S=3-1F=/4hrf/300 wRFb34RF618 A=5RB)

PL100-16RF BS S500= B= D= f1=3/@Ao sME0S=2.87F5

wn250-150 rf s=57.0(a)-f25/4732516 H=2ampampw

WN350-600 RFS=1

pl65(b)-16 ff bb=77 c=18 n=0 l=0 k/F

So 50(B)-25 RF5924 L

1 CM 1700-0.2520δs=12

bl500-6rf