HG/T 20592  法兰 PL 900(B)-2.5 FF c=30

20592 pl900(b)-2.5 ff c=30

WN 80(B)-25 RF=/40rfF1b600-6/

WN4"-600 RF Sch40

1 RF 1000-0.25

JWN 200×250-150 RF

WN 6"-150 RF Sch80

WN6"-600 RF Sch40

1 FF 550-0.6 δs=4

WN 200(B)-40 RF

wn80(b)-25fm s=4h40FFF-Sch80 TRamp003J540-- wrXy S=6.