HG/T 20592  法兰盖 BL 250-16 RFSch800RF b1 R

BL250-16 RFSch800RF b1 R

20592 wn300b-25fm sF b=2RFN12@RF@470.66.41

WN200B-40FM S=12

WN150-150RF.F16RF0 d=71

PL200-10 RF603II/0CC:/

SO 250-150 RF

47023 rf 1000-1.0/5

WN250 -150 RF

BL250-150RF HG/

wn350-40rj0006erF shc4H40 H-563.5-16)=sTB)10 δ1Sch4