HG/T 20592  法兰盖 BL 40-10 FF2rf0-31400-1

BL40(A)-10 FF2rf0-31400-1

SO 50-16 RF B=59

wn80-100 rj RF8F6/scurf s/AA=9150R/6/4/p

47023 FM1600-4.0.0 S=3=12=3h=210n=44l4/r

20592 WN200-25RF10F300 R

BL450-10rfrf sch0 F1

AXA-4Frfcampa=/30b1M

PL50(B)-16 RF 20592â

WN 20(B)-25 RF/4/h p84.5 l

wn15-16