NB/T 47021  法兰 RF 450-0.25�ذ

NB/T47021 RF450-0.25�ذ

SO 8"-150 RF f=2 O=280

WN800-25RF A=33.5 S

BL200-10TS SL700(B)-25RFh80 16Sh

wn150-40rjas80s1B)rf(frf

WN 150(B)-16 T S=10

WN 600-150 RF S0(B)-64m.htmlch800 RF.042

c-BL50-25RF-300r10/

BL15-16RFF-

LWN50-1500 RF/68B=309rfF.