GB/T 12459  弯头 DN 50×25-Sch40S90ELR

DN 50×25-Sch40S 90ELR

WN25-16 RF S=4

WN 600(B)-10 RF HG/T2059

bl200-25 fmf5-1900-2.23

wn600-600rfc

SO450(B)-16G.6 M0/amp

WN80-150RF SCH80fD=580580 AA=410 K=525 L=3

BL80-16 RF f1=3 D=240 C=15 n=8 L=18 d=185

WN 300-300 RF

WN100B)-16 RFF B=j00\u00c3\u0