GB/T 29465  法兰 C-RF 2750-4.0/20δ��

5 CRF 2750-4.020�

SO100(B)-16 RFampampF50rfRFB

LWN50(B)-150 RF0A150 R25-

WN80(a)-100RF SCH1200117-4

PL300-16RF b=6 f

WN125(B)-16m406RFRRFS=10-40RFCH600 RFS

WN25-150RF SCH160SRF1asS)-rf t-1.0

WN 40-600 FM Schl=

wn 150-150rf SCH81

WN 300-300 RF