HG/T 20592  法兰 PL 80-6 RF20-1-30/ RFD=10

PL 80(A)-6 RF20-1-30/ RFD=10

wn80(b)-40g-2BL50-

WN200-25 RF0RFJ0�31=140 k=10)-ecFFbmpampampampamp

WN80(b)-150RF sch40C=192)/FF60m5mam

so 600(b)-16ffF RF

WN80(b)-63fm/��، d=75 krf106 RF S=4mmpampampampqamCH8/1hgc/FыC=B1-

bl80-1500 fm sch802Cr1