HG/T 20592  法兰盖 BL 450-10 RF п©Б√▓п▒Б√═Б■─п▒Б0 r

bl450(a)-10rf п©Б√▓п▒Б√═Б■─п▒Б0 r

DN 350×300-Ⅱ-8 RC0=& d=86.6 f1=4.5 B

wn50b-25g05S0-

wn200-900RF25R-1140100mni12mo2mpampamp

WN32-16 RFRF s=16M0-6

1 FF 500-0.6-2.60-0.

wn20-150 RF100222.5 RF RF Sch8S080F

SOP FF 10K 15Asch61