GB/T 12459  同心异径管 DN 600×500-Sch40SRC951f d=191

DN 600×500-Sch40S RC951f d=191

BI 8000F-FM1000-0.6F.

wn50(b)-25 rf hg0-R40S£Â¥Ã¢â

WN 100(B)-100 RF SRFm)-16S0rfF-sch/

SO150(B)-16M5.6Fa1

PL 40(B)-16 RF b=3130-

2 CFM 2800-0.25 δ1=6

SO250-10RF600s=1G/T 205

PL80-6 RJ0H

WN 200-300 RF Sch40،9RFF