HG/T 20592  法兰盖 BL 25-100 G=0-0.66 RF-150

bl25-100g=0-0.66 RF-150

PL80(B)-16 FF b=3 C=

WN50(B)-16 RF

DN2000-PN6 PL RF Ⅱ

WN 80-300 FM S=80-15ch40 WFHh�1=10 RF â�

3 rf 600-2.5 6RF0S=4.56=1 s=61116RFh40.91FRF39

PL250B-10 RF,S3=5 d=58 c=12RFFM400-p�

SO50B)-150RF D=130 K=2-20�´1=10