GB/T 12606-2016 English PDF (GBT12606-2016)

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GB/T 12606-2016: Automated full peripheral flux leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection of longitudinal and/or transverse imperfections
GB/T 12606-2016
Automated full peripheral flux leakage testing of seamless and welded (except submerged arc-welded) ferromagnetic steel tubes for the detection of longitudinal and/or transverse imperfections
ICS 77.040.20
H26
National Standards of People's Republic of China
Replacing GB/T 12606-1999
Seamless and welded (except submerged arc) ferromagnetic steel
Full-circle longitudinal and/or transverse magnetic flux leakage testing imperfections automatic
(Exceptsubmergedarc-welded) ferromagneticsteeltubesforthe
(ISO 10893-3.2011, Non-destructivetestingofsteeltubes-Part 3.
welded (exceptsubmergedarc-welded) ferromagneticsteeltubesforthe
detectionoflongitudinaland/ortransverseimperfections, IDT)
Published 2017-07-01 2016-08-29 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Preface Ⅰ
1 Scope 1
2 Normative References 1
Terms and definitions 1 3
4 General requirements 2
5 Detection Method 2
Comparative 4 sample tube 6
7 equipment calibration and verification 6
8 acceptance 6
9 Test Report 6
Limitations (normative) method for detecting magnetic leakage Appendix A 7
Foreword
This standard was drafted in accordance with rules GB/T 1.1-2009 given.
Instead of the standard GB/T 12606-1999 "steel flux leakage testing method", compared with the GB/T 12606-1999, Technical change
as follows.
--- modify the scope of the standard (see Chapter 1, 1999 edition of the Chapter 1);
--- increase the content of normative references, terms and definitions, the general requirements (see Chapter 2, Chapter 3, Chapter 4);
--- not modify the processing of the inner surface of the inner diameter of pipe groove range (see 612, 1999 edition 6.1.5.);
--- modify the contrast material selection requirements like tubes (see 613, 1999 edition of 6.3.1.);
--- modify the pore size range of drilling (see 612, 1999 edition of 6.2.3.);
--- modify requirements groove width and length (see 622, 1999 edition of 6.1.4.2 and 6.1.4.3..);
--- modify the acceptance level and logo (see Table 1, Table 1 of the 1999 edition);
--- delete the contents of the principle of testing, testing equipment (Chapters 3 and 4 of the 1999 edition);
--- increase the requirements for the number of re-testing (see 8.2);
--- modify the contents of Appendix A, deleted Annex B (see Appendix A, 1999 edition of Appendix B).
This translation method using identical with standard ISO 10893-3.2011 "NDT steel Part 3. seamless and welded (SAW
Excluded) ferromagnetic steel longitudinal and/or transverse imperfections Automatic full peripheral flux leakage testing. "
Consistency correspondence relationship with the international standard in normative documents referenced in our files are as follows.
--- GB/T 9445-2008 NDT personnel qualification and certification (ISO 9712.2005, IDT)
The standard proposed by China Iron and Steel Association.
This standard by the National Steel Standardization Technical Committee (SAC/TC183).
This standard was drafted. Tianjin Pipe Group Co., Ltd., Hengyang Valin Steel Tube Co., Ltd., Metallurgical Industry Information Standards Institute.
The main drafters. Zhao Renshun, An Jianbo, Zhao Bin, Dong Li, Zhang Li.
This standard supersedes the previous editions are.
--- GB/T 12606-1999.
Seamless and welded (except submerged arc) ferromagnetic steel
Full-circle longitudinal and/or transverse magnetic flux leakage testing imperfections automatic
1 Scope
This standard specifies the seamless and welded (except submerged arc) the whole circumference of ferromagnetic steel automatic defect detecting magnetic leakage requirements.
Unless otherwise specified in the purchase order, this standard is mainly used for the detection of longitudinal imperfections.
This standard is suitable for detecting an outer diameter of 10mm is greater than or equal to steel.
This standard is also applicable to the detection of the hollow profile.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the edition cited applies this
file. For undated references, the latest edition (including any amendments) applies to this document.
ISO 9712 NDT personnel qualification and certification (Non-destructivetesting-Qualificationandcertifica-
tionofNDTpersonnel)
NDT ISO 11484 owner of the steel product qualification system [Steelproducts-Employer􀆳s qualification
systemfornon-destructivetesting (NDT) personnel]
3 Terms and Definitions
Defined in ISO 11484 and the following terms and definitions apply to this document.
3.1
Standard contrast defect referencestandard
Artificial defect nondestructive testing apparatus (such as drilling, grooves and dents) for verification.
3.2
Comparative sample tube referencetube
Comparison to a standard steel contains defects or pipe section.
3.3
Comparative sample referencesample
Comparison of standard samples containing defects (e.g., pipe, sheet or strip).
NOTE. This standard uses only the term "control sample tubes", also includes the term "comparative sample."
3.4
Tube tube
Any cross-sectional shape of the opening ends of the hollow elongated products.
3.5
Seamless seamlesstube
The solid product obtained a perforated hollow tube, and then by hot working or cold working to obtain the final dimensions.
3.6
Pipe weldedtube
By welding adjacent edges of the flat rolled together to make a tube, after welding can be performed hot or cold working, to give a final
size.
3.7
Manufacturers manufacturer
Products manufactured in accordance with relevant standards and statements delivered products meet the relevant standards applicable to all organizations in terms of requirements.
3.8
Protocol agreement
At the time of inquiry and order, the contract between the manufacturer and the purchaser.
4 General requirements
4.1 Unless standards or purchaser and manufacturer agreed, full peripheral magnetic leakage detection to be operating in all the major steel production processes
(Rolling, heat treatment, cold and hot processing, sizing and straightening the primary and the like) after completion of all of.
4.2 detected steel pipe should have enough flatness to ensure the effectiveness of detection. The surface should not affect detection reliability of foreign bodies.
4.3 Detection shall be according to ISO 9712, ISO 11484 or equivalent standard trained and qualified operator appointed by the manufacturer are eligible
Carried out under the supervision of staff. In the case of testing by a third party, this shall be the purchaser agreed to consult with the manufacturer.
The employer shall file a certificate issued by the authority to operate. NDT3 a non-destructive testing (NDT) operators shall be approved by the Employer
Authorized officers.
Note. The definition of the 1, 2 and 3 can be found in the corresponding international standards such as ISO 9712 and ISO 11484.
5 Detection
5.1 using a longitudinal magnetic flux leakage by detection of imperfections pipe (see FIG. 1), and/or lateral defect detected by mutual agreement (see FIG. 2). This standard
No registration predetermined wall thickness limits, given the limitations described in Appendix A of the detection method.
Pipe ends have a short length can not be detected any undetected tube end should be carried out in accordance with the requirements of the product standards of the respective
Line processing.
5.2 In the detection process, steel...