HG/T 20592  法兰盖 BL 20(B)-63 RF6s150Sxxs/4B)pJ70��

bl20b-63rf6s150Sxxs/4B)pJ70��

NB=T47023 RF800-1.6

WN150-150 RF=5S93RFRF f1=3Sc

WN15(B)-160RF

WN 10"-150 RF Sch40S

WN 1 1/2"-150 RF Sch40S

WN 65-2500 RF S=4.5h8ampPN63 WN RF

PL 500(B)-2.5 RF

WN65(B)-16 RF S=5

wn600(b)-40fmS0nqerS0FH1S=40