法兰 FM 1900-6.4/6.3

NB/T47023 FM1900-6.46.3

bl400(b)-25mFRF80f-150RF S=6B)-02.6RFF1.0h40 S=2(B)-6RF b=240NM50rfM1300-1.

WN20-300Rf06Fh80s RF.0F

WN50-63 RF0c0.6-0-1.6 H=120 b=5 B

WN300-25 FM S=16

SO15-900FM.6

WN 50-16 RFRF Sch &am

20615BL50-300 RF.6/7/1000-1

TPB-21.0F