Home / Standards / GB/T 5777-2008 GB/T 5777-2008 Abolished Seamless steel pipe and tubing methods for ultrasonic testing 无缝钢管超声波探伤检验方法 Standard Type GBT ICS 77.040.20 CCS H26 Status 废止 Issue Date 2008-08-05 Implementation 2009-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A