HG/T 20592  法兰 PL 450(B)-6 RF b=4

pl450(b)-6RF b=4

BL 300-25 RF B1=50

HG20593 PL450(B)-16 RF

WN 300-300 RF Sch80S S=8f3=2.5 S2fTr/592-2001=0F

PL80-10 RF

WN 100(B)-25 RF800-150 RF-16 RF-120δF S/rf2)5

PL60-10RFch7-FFFrf-s /007366-��RF

WN 500-150RF-315- 609ph

bl40-100mFin

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