GB/T 12459  异径三通 DN 50×50×40-4TRSch40 s

DN 50×50×40-4 TRSch40 s

WN 500(B)-40 RF

PL50B)-6 RF92 RFFch4.5

PL 500(B)-6 RF

SO 125-300 Go-rf(B)-

WN 2 1/2"-150 RF Sch40S

so25b-40rf0 C72f16=

wn 450-150 rf@pc5RF0 L=

WN 10-1500 RFF S=5mpampampampampampampampampampamp0�o���

NB/T47065.2