HG/T 20592  法兰盖 BL 600-6 FFDrj0.6=12@A WN1000160 S=8.80/500

WN80-300 MFMJSch4040 RF RFF0-1. S=4=

BL600-6FFDrj0.6=12@A WN1000160 S=8.80/500

WN200-150 RF Sch10S20,hg0 fm s=3.5 y=450

wn150 -16 rf q345e009 wn400(b)-1600c3

WN 100(B)-25 RF Sch80S=706AA00-150RF0/u00c3/data

3 RF 1500-1.6158 n=6200 RF b=490-

SO450(A)