HG/T 20592  法兰 WN 25-63 M S=5-300

WN25(A)-63 M S=5-300

WN600-16 RF.0/44-1 rf3=98H80=U&=0ahUKEwiWl000

WN300-150 RF Sch4040Srf00-2.

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.

LWN50-1