HG/T 20592  法兰盖 BL 50-16 RF3/public/common/qq.png

WN150-300 RF S=9/b=61 k=105 c=16 l=19

3 RF 2000-1.6 δ0=45h160H160=8 2F/5-600-0-150 RF B=52 H=508-300 RF(B)-16 RF)

BI 800

WN150(B)-16 M7mb1=51rf b=30-1656rf=76 SRJ B=h1=0fm-

AWN 40-16 RF

BL2500-16 RF0b4=60 h=A)-16rf0-150 rfF1 RF S20MFf s=

3fm800-4f50