GB/T 12459  异径三通 DN 250×250×25-Sch40TRampam

DN 250×250×25-Sch40 TRampam

PL 50(B)-25 RF B=51.3+ b=

SO400-40FMFF/RF FM600-2.5 /u(B)-1 S=h=240 RF0pl2

WN25-150 RF Sch40)-6 RF(B)-63FM

WN25b-63RF0h350 RF/8m s=2.9=6am-16F

BL50-600 tR-900 RJ S=3.9u F Ba40S63FR

20623 B WN900-300 RF-4.03� b=2 f2=

B