China 'GB/T 18477.3-2009
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 18477.3-2009
Unplasticized polyvinyl chloride (PVC-U) structure wall pipeline system for underground soil waste and drainage - Part 3: Bilayer and hollow-wall construction with axial hollow pipes 埋地排水用硬聚氯乙烯（PVC-U）结构壁管道系统 第3部分：双层轴向中空壁管材
Issued Date:2009-10-15
Implemented Date:2010-03-01
Issued by:
The Standardization Administration of the People's Republic of China
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