HG/T 20592  法兰 WN 125-40 T)-40rfe125(B)-

wn125-40t)-40rfe125(B)-

WN250-300 FF Sch40 D= K= N= A=hRF SCH10S20

WN250-300 FF Sch40 D= K= N=

WN50-150RJ H1=12 B=40.5 h=B)-16RF f=

WN300-1500 RF.

LWN50-150 RF

WN 600-300 RF Sch40S

WN 40(B)-100 RF S=4

LWN 50-300 RF B=72

WN25B-25FM S=31R RF0c340S26.6�