GB/T 12459  弯头 DN 50-Ⅱ-290E3D A=500

DN 50-Ⅱ-2 90E3D A=500

WN 252-150 RF0RF S=5(1WlJDCirF416 RF0S R5las

WN 50(B)-16 RF60h40s10 fm1000-1.0/70-165

BL350-600RFRF20615h=60RFrf)

WN450(B)-16RFS=51.6/

PL32(B)- 16RF6h1pam10 RF2-0 R03S0S835RF5766п©б╘п╠Б∙≤п©Б√▓п▒Б�

BL4