HG/T 20592  法兰 PL 20-10 FFd=100c=13l=16k=69 s=240H=21.6/14 S

pl20(a)-10ffd=100c=13l=16k=69 s=240H=21.6/14 S

A WN125-150 RFfd70-16=/F

47021 c-fm600-1.6/=23

WN350(B)-10 T3 AA=915L25-300m

BL 500-25 RFiF S=0O10rhg

PL 100(B)-16 RF

WN 200-1500 RJ=/B)-J4 RR=1000 RF S=/90

47021RF600-1.60SS

pl150(b)-6RF b=3

WN 15-150