HG/T 20592  法兰盖 BL 65-16 RF3 Sch802FNMF

BL65-16 RF3 Sch802FNMF

LWN1"-300 RF Sch40S280

BI 2000f b140-16RF-

PL 50-150 RF4.016RC1RF61

bl20-600 t/pl-

SO 1 1/2"-150 RFSch30RF Sch.5

pl800(b)-2.5RF

WN 250(B)-25 RF SCH40S.38

WN100-40 RF Sch40sch5M/u00

SO 500(B)-16 RF��80F Sc@0/5.RF Rh80/