NB/T 47021  法兰 M 1400-1.0/20δs=1

1 M 1400-1.020δs=1

wn 40(b)-160 rf s=96ff6-400

1 RF 600-1.0

SO 150-150 RF

wn50(a)-100 rf 60.3*4 4ä»

BL 40-900 RJD=116 B=

WN 1 1/2"-2500 RF Sch80S.250 Г В№

WN65-16 RJ0-4.0RF0 RF Sch10S�´���FJ Sch80S.5 RFELF Sch40J77.5

bl500-150 r