GB/T 12459  弯头 DN 500-Ⅱ-590ES6888 FF-140am

DN 500-Ⅱ-5 90ES6888 FF-140am

pl300(a)-10fF6-2/ �ch160Fdp5

WN 80(B)-63RF S=55geRF ScRF/02

b wn900-600 rf/00c3/datarrum�)

WN300(B)-16 FM S=S

WN500A)-16 RF2 F0615RF00000-0�

PL500(B)-10RF HG/‚³

PL25(B)-25 FF

PL300(B)-10RFB1=103

WN25-10 RF00