GB/T 12459  偏心异径管 DN 80×50-Ⅱ-4REFch

wn100-40fms8 H=272G/

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DN 80×50-Ⅱ-4 REFch

WN20(B)-150RFHG/04

HP-2 إ ï؟½F4063.5آ¢F Sch40RF RF20RFh403F@Sch4ï؟½

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WN50(A-16 RF/u00c2/u00a/25 RF/TF�j@5@ rfuFsRF2500 RF-RF�

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PL20-16FF0F