HG/T 20592  法兰盖 BL 450-25 M30G=70RF

BL450-25 M30G=70RF

wn100-600 rj s-1S=s=45/6F

wn200-300 RF S-1.6/40-ch160m=40

WN 12"-600 RJ S=S=12 S=12C

wn150(b)-600 rf s=6/

47021 fm450-1.6/55F5¶-)- B=28=1026

wn80(b)-16 rf bb=

20615 WN25-300 RF S=4.5

bl150-1500mh1=10s)6¤RFR-

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