HG/T 20592  法兰 WN 80-40 RFs=5s=5RF/8 W16rf-

wn80-40rfs=5s=5RF/8 W16rf-

WN 25(B)-16 RF=/FFRJ SchSch120R

PL900B-25RF6F47023

bl50-150 RF RF)-16RF0/1=1== RF

BL65B-40RF00 RF S=20603/ch40 A=ffum-8rfs1095

LWN15-300 FM0-100 K=

bl50(a)-150rf0Wk=10016

JB81 PL250-25RFF S=3.5b)505-200-1=1RF sch40/RF))

wn