HG/T 20592  法兰盖 BL 80(B)-25 RFc3/public/data/public/wx/wx.max.png

pl50(a)-25rf b=3-16rfs550Rmpamp5 RF

SO 150-16 RF12 f1=4 c=466rf9-

WN500(B)-16 RF MFM-2.5/0040 RF S＝60M90-2.S

wn500b-40fmã0RJ B=49.1PL10(B)-

BL20(a)-100 Rfi-16FF1603=5-25 M2.5

PL450(B)-16 RF f1=3 b=4/

BII4000 C=10 n=4

wn150-25rf afrfs=5›â€