法兰 PL 300-16 FF b=5 f1=3 b=4 c=35 d=520 k=470 b1

PL300A-16FF b=5 f1=3 b=4 c=35 d=520 k=470 b1

NB/T47021 FM600-0.6

PL 50-10 RF00 RF=140

WN80-600RFB=69¡2600-s/@47021 r

WN 300-150RF Sch40 H

47023 rf1300-1.0/60-130

wn20B-63rf/

so450-10fmF Sh/

PL20(B)-16 RF

BL500(B)-10 RF D=668RFHFMampampamp;nbsp;