HG/T 20592  法兰盖 BL 100-6 RF gb390RFh80s RF)-6rb10Schampamp

bl100-6rf gb390RFh80s RF)-6rb10Schampamp

WN 150(B)-40 RF S=7B)300RJ250 rf sc

WN 80(B)-16 RFSc/s��žWN600-150RF δ Sch80FC-SFM�

SE 80(B)-16 FF/S/5.5- A=7RFb=

wn50-600 g sch4/-1.0/1D2=Sch4

hg=t20615-2009so500-150 ff6RFFH41@)-40rf.a

WN80-160 RJ