中华人民共和国国家标准
NATIONAL
STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 328.4-2007
Test methods for building sheets for waterproofing - Part 4: Bitumen sheets for waterproofing-thickness and mass per unit area 建筑防水卷材试验方法 第4部分:沥青防水卷材 厚度、单位面积质量
Issued Date:2007-03-26
Implemented Date:2007-10-01
Issued by:
The Standardization Administration of the People's Republic of China