GB/T 12459  同心异径管 DN 450×350-6RC.5105@RF@443o025

DN 450×350-6 RC.5105@RF@443o025

SW 15(B)-16 RFfd300 rf sch40400-6

LWN250-1500 RJ S/=24F=1/ Sch40s/=8=K=30 H=700h45 K

WN300(B)-25rf0RF0

pl80-16rjh0-0/вR5000δ HF9.5F@

DN 25-3 45E3D

wn25-1500 mfmf sG/4 B12-2o65(b)-156(B

WN 200(B)-63 FM S=6297

BI 616-