HG/T 20592  法兰 PL 300(B)-10 RFf

pl300b)-10rff

WN 550-150RFR--R�F Rr4件10.5 /50@i26=8

WN1"-600FM Sch40

WN200(B)-6RF b=4

WN140-16RFF Sc)-

WN 500(B)-10 RF S=6S=3.0H80S´SCfinedS

wn250b-600rf5 RF b

47023 FM800-4.0/70-150

SO 500-150 RF�fF Sch4

DN150-PN25 WN RF Ⅱ S=40RFs2@RF