GB/T 12459  等径四通 DN 80-Ⅱ-4CRSrfh80

DN 80-Ⅱ-4 CRSrfh80

wn20(a)-63m4 nM 120am00ef/dataJ0tg B1FF@40@406R43/u00a6/da

WN 50(A)-100 RF S=7

wn50a-16 rf-900rf6ampD3712m/

WN150-16T D=265 K=228 NA=1

wn250-300fm/msch002ch10/70-176FH

nt/@BL100-16 RF4h511-16RF5≥4-B

3 fm 800-4.ch80s-Srf 1

PL 6