GB/T 29465  法兰 RF 1950-1.6/20δ0=12

5 RF 1950-1.620δ0=12

pl600-10FFRni1J=3.00Rh40

PL 250(B)-6 RFŽÂ10 rfL0

wn40-300fmch40s=51N

WN400-300RF S=22.5F520R r)/

PL350(B)-6 FMF@RF@4439.53daF Schs8Fcry592-amp-150 RF S=10 H=1629.0

bl400(b)-10 rf-1 B=5

NB/T47021 RF800-1.M3056 RRFi

BL 25-