Home / Standards / SY 4014-1993 SY 4014-1993 Active 埋地钢质管道聚乙烯胶粘带防腐层施工及验收规范 Standard Type SY40 ICS N/A CCS N/A Status Active Issue Date 1993-03-27 Implementation 1993-09-01 Centralized Committee 能源部 Issuing Authority 能源部