HG/T 20592  法兰盖 BL 500-16 FF8-28300-RF20F R

BL500-16 FF8-28300-RF20F R

SO 200(B)-16 RFh0mpam targ

SO 400(B)-25 RFS=H4062 c0-0*

SO550-300RF/1H=165 DRF00-1.6c�@

WN 40(B)-10 M@4RJ RFSCH40S rf@40@S5 RJrvlet/F s

WN200-25RJamp Sc4WN SFT RF f=2RF�2

WN 250(B)-160 FM S/1.6/38-1=7

SO500(B)-16RFmSc