Home / Standards / GB/T 24721.4-2023 GB/T 24721.4-2023 Active Glass fiber reinforced plastic product for highway—Part 4:Non-pressure communications well lid 公路用玻璃纤维增强塑料产品 第4部分:非承压通信井盖 Standard Type GBT ICS 03.220.20;93.080.30 CCS P66 Status 现行 Issue Date 2023-03-17 Implementation 2023-07-01 Responsible Dept 国家标准委 Drafting Unit N/A