Home / Standards / GB/T 5099.3-2017 GB/T 5099.3-2017 Active Seamless steel gas cylinders—Part 3: Normalized cylinders 钢质无缝气瓶 第3部分:正火处理的钢瓶 Standard Type GBT ICS 23.020.30 CCS J74 Status 现行 Issue Date 2017-12-29 Implementation 2019-01-01 Responsible Dept 国家标准委 Drafting Unit N/A