NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 5777-2019
Automated full peripheral ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for the detection of longitudinal and/or transverse imperfections 无缝和焊接(埋弧焊除外)钢管纵向和/或横向缺欠的全圆周自动超声检测
Issued Date:2019
Implemented Date:2020-5-1
Issued by:
The Standardization Administration of the People's Republic of China