Home / Standards / YB/T 4204-2009 YB/T 4204-2009 Abolished 供水用不锈钢焊接钢管 Standard Type YB ICS N/A CCS N/A Status Abolished Issue Date 2009-12-04 Implementation 2010-06-01 Centralized Committee 工业和信息化部 Issuing Authority 工业和信息化部