HG/T 20592  法兰盖 BL 150-25 G-RF415 wn350-600r

bl150(a)-25 g-RF415 wn350-600r

WN300-900 RJ S=1120300

BI1200-F HF)-2/6f00-h406 RF

pl50(b)-10 rf bb=F=5F1.0δsu00(

WN 65-150 RF.7C=141 M S=3.5=3.0560.6Fh S=10

WN125(B)-16RF S=7F500-

EHA1200*12pquo5

WN 700(B)-16 RFS=4=3 SC/=1000 RF S=7l S-1B=30-150

WN