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GB/T 20490-2023: Non-destructive testing(NDT) methods of steel tubes - Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections
Status: Valid GB/T 20490: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20490-2023 | English | 264 |
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Non-destructive testing(NDT) methods of steel tubes - Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections
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GB/T 20490-2023
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| GB/T 20490-2006 | English | 319 |
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Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes -- Ultrasonic testing for the detection of laminar imperfections
| Obsolete |
GB/T 20490-2006
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PDF similar to GB/T 20490-2023
Basic data | Standard ID | GB/T 20490-2023 (GB/T20490-2023) | | Description (Translated English) | Non-destructive testing(NDT) methods of steel tubes - Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H26 | | Classification of International Standard | 77.040.20 | | Word Count Estimation | 14,149 | | Date of Issue | 2023-08-06 | | Date of Implementation | 2024-03-01 | | Older Standard (superseded by this standard) | GB/T 20490-2006 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 20490-2023: Non-destructive testing(NDT) methods of steel tubes - Automated ultrasonic testing of seamless and welded steel tubes for the detection of laminar imperfections
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 77.040.20
CCSH26
National Standards of People's Republic of China
Replace GB/T 20490-2006
Nondestructive testing of steel pipes Seamless and welded steel pipes
Automated ultrasonic detection of delamination defects
Published on 2023-08-06 Implemented on 2024-03-01
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
PrefaceⅠ
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 General requirements 2
5 Detection method 2
6 Comparative sample tube 4
7 Equipment Checksum Verification 5
8 Acceptance 6
9 Test report 6
Appendix A (Normative) Manual Ultrasonic Inspection Procedure for Determining the Size of Lamination Defects 8
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Drafting.
This document replaces GB/T 20490-2006 "Ultrasonic detection of delamination defects in pressure-bearing seamless and welded (except submerged arc welding) steel pipes" and is consistent with
Compared with GB/T 20490-2006, in addition to structural adjustments and editorial changes, the main technical changes are as follows.
---The scope of application of the standard has been changed, and the detection of adjacent areas of welded steel pipe welds and the full circle of seamless and welded steel pipe ends have been added
Weekly testing (see Chapter 1, Chapter 1 of the.2006 edition);
---Added terms and definitions (see Chapter 3);
---Changed the requirements for full-circle inspection of seamless and welded steel pipes (except submerged arc welded steel pipes) (see 5.2, 4.2 of the.2006 edition);
--- Added requirements for inspection of adjacent areas of welded steel pipe welds (see 5.3);
--- Added requirements for full-circle detection of seamless and welded steel pipe ends (see 5.4);
---Changed the acceptance level (see Table 1, Table 2, Table 1 of the.2006 version);
---Changed the requirements for comparing standard defect sizes (see 6.2, Chapter 6 of the.2006 edition);
---Changed the requirements for disposal of suspicious pipes (see 8.2, 8.4 of the.2006 edition).
This document is equivalent to ISO 10893-8.2011 "Nondestructive testing of steel pipes - Part 8.Automatic detection of delamination defects in seamless and welded steel pipes"
Acoustic Detection".
This document has made the following minimal editorial changes.
---In order to coordinate with the existing standards, the name of the standard is changed to "Automated Ultrasonic Inspection of Seamless and Welded Steel Pipes for Delamination Defects in Non-destructive Testing of Steel Pipes"
Measurement";
---Incorporated the amendments to ISO 10893-8.2011/Amd.1.2020, the outer margins of the clauses involved are marked with vertical
Straight double lines (||) are marked.
Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents.
This document is proposed by the China Iron and Steel Industry Association.
This document is under the jurisdiction of the National Steel Standardization Technical Committee (SAC/TC183).
This document was drafted by. China National Petroleum Corporation Engineering Materials Research Institute Co., Ltd., National Steel and Products Quality Inspection and Testing Center, China
PetroChina Materials Co., Ltd., Jiangsu Wujin Stainless Co., Ltd., Shanxi Taigang Stainless Steel Pipe Co., Ltd., Gangyan Nanok Testing Technology
Co., Ltd., Wuhan Zhongke Innovation Technology Co., Ltd., Huayou Steel Pipe Co., Ltd., Shandong Shengli Steel Pipe Co., Ltd., Nanjing Julong
Steel Pipe Co., Ltd., Metallurgical Industry Information Standards Research Institute, Jiangsu New Sunshine Pipe Industry Technology Co., Ltd.
The main drafters of this document. Huang Lei, Yao Chenghu, Liu Haiping, Shen Xuekang, Wang Bowen, Liu Guanglei, Lin Guanghui, Li Rujiang, Li Guosong, Cao Huayong,
Dong Li, Zhang Hongbo, Wang Juan, Guo Jianlong, Tang Wensong, Li Ting, Wang Zhimin, Han Xiulin, Song Gaofeng, Xue Jianzhong, Chang Yonggang, Zhu Guoqing, Sun Shaoqing, Liu Yan,
Zhao Jun.
The previous versions of the documents replaced by this document are as follows.
---First released in.2006.
---This is the first revision.
Nondestructive testing of steel pipes Seamless and welded steel pipes
Automated ultrasonic detection of delamination defects
1 Scope
This document specifies the requirements for automatic ultrasonic detection of delamination defects, including.
a) Full circumferential inspection of seamless and welded steel pipe bodies (except submerged arc welded steel pipes);
b) Detection of adjacent areas of welded steel pipe welds;
c) Full circumference inspection of seamless and welded steel pipe ends.
This document also applies to the inspection of circular hollow profiles.
Note. For welded steel pipes, see ISO 10893-9 for the method of detecting delamination defects in steel strips/plates before steel pipe forming.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
ulary)
Note. GB/T 12604.1-2020 Non-destructive testing terminology Ultrasonic testing (ISO 5577.2017, MOD)
tionofNDTpersonnel)
ofimperfections)
Note. GB/T 40791-2021 Non-destructive testing of steel pipes - Radiographic detection of weld defects in welded steel pipes (ISO 10893-6.2019, IDT)
ISO 10893-7 Non-destructive testing of steel pipes Part 7.Digital radiographic detection of weld defects in welded steel pipes (Non-destructivetes-
Note. GB/T 40385-2021 Non-destructive testing of steel pipes - Digital radiographic detection of weld defects in welded steel pipes (ISO 10893-7.2019, IDT)
ISO 11484 Qualification system for non-destructive testing personnel of steel products employers [Steelproducts-Employer'squalifi-
3 Terms and definitions
The terms and definitions defined in ISO 5577 and ISO 11484 and the following apply to this document.
3.1
comparison standard defect referencestandard
Used to verify artificial defects (such as holes, grooves and grooves) in non-destructive testing equipment.
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