NB/T 47021  法兰 RF 450-1.0u00c3/

47021rf450-1.0/u00c3/

WN 50(B)-100 RF

SO80-150 RF

wnbl15(b)-150 rf so80(b)

BI 800

WN 6"-150 RF Sch40S

SO 200(B)-16 RF

1 RF 450-1.0 δs=5

BL50-10 RF D0 rf= f1(

WN 50-1500 RFch40s0=90ch40 S=65 RF=900 δn=14F�=12l=3.6�–-s/@SO100-rf s=60FS�ҝ