NB/T 47022  法兰 RF 800-1.6 δ1=6S=5RJ402.5-1.RF)-

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DN400/PN16/01B0A=86ch40=80

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SO300(B)-16FF-1 s=1

BL400-300FMG/s=8RF6 RF bch5 f1=3 d=R640 S

WN125(B)-300RF�ƒÅ½Ã‚´=

wn80(B)-150RF25 M/

BL 500-300 RFmCH80026800 fF

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