HG/T 20592  法兰盖 BL 100-25 FF-2ml6af/uc1.

bl100-25ff-2ml6af/uc1.

SO 2 1/2"-150 RF f=2

WN 3/4"-150 RF Sch40S

WN 300(B)-25 RF S=4.5

3FM 800-1.6/58-14

PL40(B)-16 RF-900 LG-150 LG-4.0/LM RF206 rf@.5 RJ-1R08

WN500-150 M0

wn50-150rf-sch80sRFu0

NB/T47022 C-RF 800-2.5

bl50-150RFsch40=45043