GB/T 12459  同心异径管 DN 350×300-8RC=4-68

DN 350×300-8 RC=4-68

wn100-16rfrf/5ch/0RF4dat

BI 1600 h-150 RF8.F5 R0577.5

BL25-10FFRFF-16 R5RF20592-FF

BL50(B)-16M0s SCH4-0RF0.2

SE 80(B)-16 RF/ampampa

PL 450(B)-6 RFs=40 R55

WN20-300 RF B=15.712

WN 150(B)-16 FM S=12

PL15-6 FF RF S=4m/u00ef/data/sr