GB/T 12459  同心异径管 DN 750×10-Sch30RC��

DN 750×10-Sch30 RC��

3 FM 500-4.0/56-125F/ r/u-1RF0-150RFf S=12ch40s-25r

DN 25-Ⅱ-3.5 90EL

BL 150-2500 RJh42 s=2.20@W RFF1

TPB-2 S=10F ãƒå0MS=8mp

wn100-16rf sch0ch/4b1Fp

1 RF 1700-0.25 δ

HG/t20592WN100-16RF

A WN 30"-150 RF S=SCH30

BL50