GB/T 12459  等径三通 DN 250-Sch140TSTh40 huo59210WN5S

DN250-Sch140 TSTh40 huo59210WN5S

PL450(B)-10 GF638 H=89 HG/ RF b

bl 80-16 rf0rfRF B1F B1=S.023

LWN450-600 FM40

so40-1500rf49.0133306R160

WN 50-40 FM)-16 RF40c0 RJ=22

SO80(B)-25 fm=2-=148F6bc-16FF

so500(b)-16 m0/0

WN25-600 RJsch80S8440gh40-2F0 RFR

bl