GB/T 12459  异径三通 DN 900×900×350-Sch120TR

DN 350×350×900-Sch120 TR

wn40(b)-160RF=12

bl50-900 rj sch80/B) SruRFS=4

pl100(b)-10 RF120Sch1603.76(a=1000 R

WN 300(B)-40 FM Sch/b

BL 25-10 FF sch40R50 RF BSa)-16rf7844-1 N=6M1ampampa

BI 273 RFSF366-90FRFs=5.

3 M 1200-0.2520δ0=2064017 H=1�

WN500