Home / Standards / HG 2100-1991 HG 2100-1991 液环式氯气泵用机械密封 液环式氯气泵用机械密封 Standard Type HG ICS 采标情况: CCS J22 G92 Status N/A Issue Date N/A Implementation N/A Responsible Dept 发布日期:1991-08-19 Drafting Unit N/A