Home / Standards / GB/T 18691.1-2021 GB/T 18691.1-2021 Active Agricultural irrigation equipment—Irrigation valves—Part 1：General requirements 农业灌溉设备 灌溉阀 第1部分：通用要求 Standard Type GBT ICS 65.060.35 CCS B91 Status 现行 Issue Date 2021-12-31 Implementation 2022-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A