Home / Standards / GB/T 20568-2006 GB/T 20568-2006 Abolished Metallic materials - Tube ring hydraulic pressure test 金属材料 管环液压试验方法 Standard Type GBT ICS 77.040.10 CCS H22 Status 废止 Issue Date 2006-11-01 Implementation 2007-02-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A