HG/T 20592  法兰 PL 500(B)-25 RF50 FF S40 D= K0n40-300r3=C-4/S==1601H=

PL500(B)-25 RF50 FF S40 D= K0n40-300r3=C-4/S==1601H=

WN 20(B)-25 RF-20

WN 50-300 RF S=5.65otfo30000-F S

so 50(b)-16 rf-10

wn900b-10rf/uSS=4.5 BB=

20615 LWN65-300 RFSc

2 CM1200-1.6-2S=10=32/RF S0 rf/0f h1=6

WN 400(B)-25 T2 RF0-63fms10mpampaSch4

WN150-