GB/T 12459  等径三通 DN 500-Sch80STSN445 RJ RFpaFRch40��671@°

DN 500-Sch80S TSN445 RJ RFpaFRch40��671@°

NB/T47023 FM500-1.6/

2 FF 1200-1.0-CHHG/

47021 rf900-0.25

WN 25(a)-16 rf RF2.5RJSSMEB)-25rf@Am6 R

BL25-300 RF))-0(b)5l

PL450B-10RFe6FMSO 600-1/

PL80-6RF D=200 bh160/F L= n=-4-150 RF S RF12J Sch40

wn20(B