HG/T 20592  法兰盖 BL 32-16 RF��S=4.550 RF/

BL32-16 RF��S=4.550 RF/

47023 RF 700-1.646-115c/

SO 500(B)-16 RF01601ampampampa4s=/al6ذ آ B)-10RFbRF

wn350-150rf+sF scRF0-30/

DN 125×15-Sch80 RE� rf/SCH4h40R

WN FF 16K 550A0500

BI 2000sI40ampam25/L B=0-4

WN 20(A)-16 RF S=1.6

BL80-300RJRF6