NB/T 47021  法兰 RF 1400-0.6 δ1=10

1 RF 1400-0.6 δ1=10

lwn100-150 rf h=350

WN40-600 RF SCH80S15RFF5 RJ0RF11Frf s=4.15=3 BRF HG/T

PL32(B)-16 RF f1=0sSa6

nb/t47023 rf 500-1.6

BL80B-6RF2059/0u=16

pl300(b)-16 ff bbF TR520RFSCH160u/

PL80-40RFh16.360rfSch40 S=3F

47023M350-1.080 k=74060r