HG/T 20592  法兰 PL 350-6 RFF=80 rf/302009=28

pl350a-6rfF=80 rf/302009=28

LWN25-300 RF H=25

WN65A-25M100-3pl6S=6Rh4010 RF A=711 D=925 K=

Bl200-25rf�SCH)310FRF020Rl20 RF8f b6RfL16-1Rh40 H=400y S-1.ach40.56

20615 wn50-300 rf s/20/1

BL 25-150 RF S=45 wn450-

SW32-150 RF40-hch400r160-10rf=148.350rf