Home / Standards / GB/T 44439-2024 GB/T 44439-2024 Active Plastics pipes and fittings—Automatic recognition systems for electrofusion joints 塑料管材和管件 电熔熔接自动识别系统 Standard Type GBT ICS 83.140.30 CCS G33 Status 现行 Issue Date 2024-08-23 Implementation 2025-03-01 Responsible Dept 中国轻工业联合会 Drafting Unit N/A