HG/T 20592  法兰盖 BL 450-16 RF MX=NFM Sch40S)-6 rf

BL450-16RF MX=NFM Sch40S)-6 rf

SO 150(B)-40 FMS0-150 RFWN20B)-1=679J05�77.5 RJch40-rM

WN 300(B)-25 M so RF b=00RF0RF-1.0/L400a

PL65(B)-16 RF150-150.055r/at

WN80(B)-16 RF d=13760 φ32J0

nb/@SO100-150 RF/48-mpam=10 SF550s/fH

SO80-600RFSc/Y6 RF&amp