HG/T 20592  法兰 WN 200-16 RF S=8.016 R=20

WN200-16 RF S=8.016 R=20

wn80(b)-63 m f2=4 s=4 n=112

WN 250-300 RF S/_pcqq_aiom/0 s= D1=100 L3=150ampampampampa

WN200-300 RF Sch=80S

SO 16"-300 RF)-10Rmrj rfs= S0=1

30403/@A BL1000-150 RF/b=116S=31400S.6ampamSch40s762=4.

SO 50(B)-6 RFuo5.5RF15-2