HG/T 20592  法兰 SO 450-6 RF-10 RF L=23Fpls=12 B=12b=3gpampam

SO450-6RF-10 RF L=23Fpls=12 B=12b=3gpampam

lwn65-300rf sc0fffch8FSch55920.25h30 B RF6�09H80SRFd=S=s=3(B)80-1RFN1-0.065@).980S=2.9c�5

wn250-300 rf b=2550 C=10 L=F808-1 R

wn300-150 rf s=12

BL350-600 RF C=53810RF R00(6S=F90 RF SRF s0=10 n=60 Sch80

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