GB/T 12459  翻边短节 DN 350-Sch40LJS

DN350-Sch40 LJS

NB/T47023 FM650-2.5

WN600-150 RF Sch40

WN 200(B)-100 M S=10

WN 50(B)-25 RF S=5

WN 4"-150 RF Sch6902

47065.3 C4

WN16-16RFFFr-1592-6ฝES

BⅡ1710

PJ/RJ 80(B)-16 RF4.57h1038 5mp��� Sch1000 RF Sch80mpampam0 RJ Sch80SF5@PFRF-m