China 'GB/T 18256-2015
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 18256-2015
Non-destructive testing of steel tubes—Automated ultrasonic testing of seamless and welded (except submerged arc-welded) steel tubes for verification of hydraulic leak-tightness 钢管无损检测 用于确认无缝和焊接钢管（埋弧焊除外）水压密实性的自动超声检测方法
Issued Date:2015-09-11
Implemented Date:2016-06-01
Issued by:
The Standardization Administration of the People's Republic of China
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