NB/T 47021  法兰 RF 550-0.25 δs=14

1 RF 550-0.25 δs=14

47022 wn300(b)-16 fm d=0-1

LWN80-150ffF6 rf1000-4.ذ°âвҖһвҖ“ШІВё�

47023fm500-1.6/500500G/00-1

3 C3000/09Rs h=34/Sch40othg20615

WN250(B)-16 t0FM S=111

WN 40-300 RF B=38.3

SO 150-150 RF S=7.11G92-���

BL50