GB/T 12459  弯头 DN 100-Sch80S90ELRF

DN 100-Sch80S 90ELRF

WN100(B)-16RF f1=01G3.050 RF67

WN500-16fmrrfa/f

DN900-PN10 pl RF IfSCH4)-2059å¡/

bl200-63 m

WN200-150RFSch40S00rfRF

WN100(B)-16RFGRF

WN80(B)-25FM,S≥72p

wn50(b)-40 m s=505T651h40RS=ampampa/00-7Ff50J-9R4ampampam.5 &a

BL 25