GB/T 328.4-2007 "Test Methods for Building Waterproofing Sheets - Part 4: Bituminous Waterproofing Sheets - Determination of Thickness and Mass per Unit Area" specifies the methods for determining the thickness and mass per unit area of bituminous waterproofing sheets. It serves as a fundamental inspection item for product quality control and engineering acceptance.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | Q17 | ICS | 91.120.30 |
| Release Date | 2007-03-26 00:00:00 | Implementation Date | 2007-10-01 00:00:00 |