GB/T 12459  同心异径管 DN 600×10-Sch60RC=sCam RF

DN 600×10-Sch60 RC=sCam RF

so150-25m50r/

SO40B)-25M20520

SO400-150 RFDr=6509b

SO50(B)-25FM b=400f s=3.916fm0-s/ HG/ch40 S=6/0.00rfF0-

SW40-300RF S-80S/5.6mpnbsp

SO65(B)-25G7592-.0-4.000-1.

SO450B-10FF5 WN500-1/fB)-16

APB-7 H/0(B)-1.6=27/135 S=5.п�