HG/T 20592  法兰 WN 20(B)-160 RF

WN20(B)-160 RF

BL40-150 RF sc

WN 300(B)-16 RF S=s=10 c=42

bl80-900rj396RSc-16

PL100(B)-16 RFh0

SP-2S00

WN 500(B)-10 RF066

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so20-16gS S0

SO 3"-150 RFFothg0S)-16 RF RJRF.hC10 RF rf�01�009 PL20-600RF