HG/T 20592  法兰 PL 10-10 RFF63rf s k=5 &=5=F/1-mp

20590 PL10-10RFF63rf s k=5 &=5=F/1-mp

2 M 2000-1.620δ1=20=f c=15s60h/

BL25-1500rfc=21))15 wn450

PL125-16RF B=134 b=3

WN80-63RFjmxinvokerservlh80S�6 d=422-1

DN25-Class900 WN RF S=4.5

wn25-600rjsch)

PL100(B)-16 RF=3.5mscM S=

pl40(b)-10rfC10s

LWN 150