HG/T 20592  法兰 WN 80(B)-25 RF S=4 RF80aS=14=5RG H=1

wn80(B)-25rf S=4 RF80aS=14=5RG H=1

SO 200-150 RF50 RFR00-154400-1.

PL80B-16RF B= D= d= K= f1= L= n= C= b=3

pl80(b)-6rj00 RF=23.4 H=590

WN25-300 M S=4.5rf0Fww0-1.6/60-121=14.00-10so

bii1400-f hh40Fh8/1=/6

B WN700-300 RF B WN700-300 RF F300 RF5-16