Home / Standards / GB/T 28273-2012 GB/T 28273-2012 Active Process classification of tube and sheet hydroforming 管、板液压成形工艺分类 Standard Type GBT ICS 25.020 CCS J32 Status 现行 Issue Date 2012-05-11 Implementation 2012-12-01 Responsible Dept 国家标准委 Drafting Unit N/A