DB15/T 1819.1-2020 Technical specifications for ultrasonic phased array testing of welded joints of buried polyethylene pipes for gas use Part 1: General requirements (English Version)
Inner Mongolia Provincial Standard of the People's Republic of China
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DB15/T 1819.1-2020
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2020DB15/T 1819.1-2020 Technical specifications for ultrasonic phased array testing of welded joints of buried polyethylene pipes for gas use Part 1: General requirements