HG/T 20592  法兰盖 BL 65-25 RF500-0-10RFF

bl65-25 rf500-0-10RFF

BL300-100 M00-Fc.15)

SO 2"-600 RF

WN 50(B)-100 RF A=60 S=5

SO 65-900 FM0Fpamorum.RF兰

so20-16rf

WN40-150 RF-bTR100-sch40-1 sch8F80S5 δ0=16aRF1/.5 RJ0r90a@bh4F@20@6RF75

SO 2"-900 RF

LWN25-150RFF0S Sch40Sch10G00FM4&5F@