HG/T 20615  法兰盖 BL 100-300 MF SC�f std0=0Mmpampa D16R6R

BL100-300MF SC�f std0=0Mmpampa D16R6R

SO 450(B)-10 RF50B-10RFch1H40S468RF9200

WN 50(B)-150 RF H=100000

WN20(B)-16FFum. b=3hF

BL1400-150RF2-2009480/60-

bl 80(b)-25fm1S6F40 703/ RFRJ& RF=

2 C-T 1100-1.00/S)-J S=

SO 40-150 RF B150rf=/pampam

WN 500(B)