法兰 RF 2400-0.6/60rf0(b)-16 RFM/50F/0uot300 RFRF206rf hg/t2pampampampSf s=4.5 hg/@B
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  • 3617046033016×45°2-∅11120°652─ф248882502430==17030150230R25垫板弧长580排气孔∅83010010200450330