Home / Standards / JC/T 640-2010 JC/T 640-2010 Abolished 顶进施工法用钢筋混凝土排水管 Standard Type JC ICS N/A CCS N/A Status Abolished Issue Date 2010-11-10 Implementation 2011-03-01 Centralized Committee 工业和信息化部 Issuing Authority 工业和信息化部