HG/T 20592  法兰 WN 250(B)-25 RF s=700160RF S=4mm006/

wn250(b)-25rf s=700160RF S=4mm006/

SOP RF 10K 300A h=25.5 t=24.

wn125(b)-40 rf s=00-

BL 80-300 RF=450pampampampampampampampam 10 RF Bs=80-S

3 C4SO-1.05sFF B=59)-630-150 RF Sch80SB)-

wn15(B)-1500 Rj27 HF S=51sc S=5.3700-0

PL 350(b)-25 RFS-´=456ã¢â