GB/T 12459  弯头 DN 500-Ⅱ-890EL

DN 500-Ⅱ-8 90EL

PL 32(B)-16 FF

WN 50-150 RF S=5

PL25(B)-10 RF

BL50-16 RF

WN 300-16 FMFLch10Rpa

PL40-6RF

SO 16"-150 RF

NB/T47023 FM900-6.4 δ1=25

PL16-150RF S@FM FM S150 RF80 H=3301671@°F6rj&H65160 LM43RF@.PL RF��@MRF166.520-F C=5=1200c0/