HG/T 20592  法兰 SO 600(B)-16 RF b=2FFM= K= L= n= BB

SO 600(B)-16 RF b=2FFM= K= L= n= BB

WN100-16RF

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WN250-100 RF00c2F Sch05 f1=2.5 C=30 L=2S=6=40C=

WN450-150 RF B=(b)-15 RF/u00a7/A=16 rf4-10ch40M8000-66 d=00-