HG/T 20592  法兰 PL 200-2.5 FF�000-0.

PL200)-2.5FF�000-0.

PL80-40RJ1A82560205ch B1053Sch80S S=620 RF

NB/T47021 FM980-0.6

WN 2000(B)-6 FM S=12

So 50-100 RFsch40.ES3r

BL 125(B)-25 RF S=6-R.6

So 200-150 RF

wn300(b)-16 m6RFr

wn80(b)-10 rf s+s=F

pl40(A)-10FFSch40S405ch160.b=616n=h(b)-16 rf