弯头 DN 500-1690EL6 RFS=19F δ0=10 m2 C=16H4==211 C=360sFrum@S6R

DN 500-16 90EL6 RFS=19F δ0=10 m2 C=16H4==211 C=360sFrum@S6R

PL450B-10RFe6FMSO 600-150 RF6ampa

BL80-100 RF 16Mn 锻

WN500-300RFJ5/80-16715 1000ch446FfFM s=420592-20/5=FH40(

法兰 pl80-16rf

WN50(B)-25RF/

WN100-25 FF.5/5 RF54

WN50(B)-16rf6-152F0-150

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