Home / Standards / GB/T 29047-2012 GB/T 29047-2012 Abolished Prefabricated directly buried insulating pipes and fittings with polyurethane [PUR]foamed-plastics and high density polyethylene [PE]casing pipes 高密度聚乙烯外护管硬质聚氨酯泡沫塑料预制直埋保温管及管件 Standard Type GBT ICS 91.140.60 CCS P40 Status 废止 Issue Date 2012-12-31 Implementation 2013-09-01 Responsible Dept 住房城乡建设部 Drafting Unit N/A