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DL/T 821-2017 English PDF

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DL/T 821-2017: Radiographic examination and quality classification of welded butt joints in metallic materials
Status: Valid

DL/T 821: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
DL/T 821-2017English829 Add to Cart 6 days [Need to translate] Radiographic examination and quality classification of welded butt joints in metallic materials Valid DL/T 821-2017
DL/T 821-2002English799 Add to Cart 4 days [Need to translate] The code of radiographic examination of butt welded-joints of pressure steels pipes and tubes Obsolete DL/T 821-2002

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Basic data

Standard ID DL/T 821-2017 (DL/T821-2017)
Description (Translated English) Radiographic examination and quality classification of welded butt joints in metallic materials
Sector / Industry Electricity & Power Industry Standard (Recommended)
Classification of Chinese Standard N78
Classification of International Standard 19.100
Word Count Estimation 36,381
Date of Issue 2017-11-15
Date of Implementation 2018-03-01
Older Standard (superseded by this standard) DL/T 821-2002
Regulation (derived from) National Energy Board Bulletin 2017 No. 10
Issuing agency(ies) National Energy Administration
Summary This standard specifies the technical requirements and quality classification methods for X-ray and gamma ray detection of metal fusion welded butt joints. This standard applies to the radiation inspection of metal material fusion welding butt joints in the power industry. This standard does not apply to the radiation inspection of butt joints such as friction welding and flash welding.

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