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See Chinese contents: NB/T 47013.11-2015 NB/T 47013.11-2015: Nondestructive testing of pressure equipments - Part 11: Standard practice for X-ray digital radiography [Including 2018XG1]
This Part of NB/T 47013 specifies the X-ray digital radiographic testing technology and quality grading requirements of fusion welded joints for metal pressure parts of pressure equipment.
