Home / Standards / GB/T 21782.3-2025 GB/T 21782.3-2025 Active Coating powders—Part 3:Determination of density by liquid displacement pycnometer 粉末涂料 第3部分:液体置换比重瓶法测定密度 Standard Type GBT ICS 87 CCS G50 Status 现行 Issue Date 2025-10-05 Implementation 2026-02-01 Responsible Dept 国家标准委 Drafting Unit N/A