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GB/T 9711-2023: Petroleum and natural gas industries - Steel pipe for pipeline transportation systems Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 9711: Historical versions
Similar standardsGB/T 9711-2023: Petroleum and natural gas industries - Steel pipe for pipeline transportation systems---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT9711-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 77.140.75; 75.200 CCS E 16; H 48 Replacing GB/T 9711-2017 Petroleum and Natural Gas Industries - Steel Pipe for Pipeline Transportation Systems (ISO 3183.2019, MOD) Issued on. NOVEMBER 27, 2023 Implemented on. MARCH 1, 2024 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 4 Introduction... 8 1 Scope... 9 2 Normative References... 9 3 Terms, Definitions, Symbols and Abbreviations... 9 4 Information Provided by the Purchaser... 10 5 Technical Requirements... 10 5.1 General... 10 5.2 Grain Size, Banded Structure and Inclusions of PSL 2 Steel Pipes Resistant to Ductile Fracture Propagation... 10 5.3 Hydrostatic Pressure Test of Butt-joined Steel Pipes... 10 5.4 Hardness Test of PSL 2 Steel Pipes... 11 5.5 Maximum Allowable Outer Weld Bead Height at Pipe Ends of SAW Pipes and COW Pipes... 13 5.6 Location of Welds and HAZ Charpy Impact Test Specimens during Weld Misalignment ... 14 5.7 Requirements for Actual Pressure when Using End Seal Plugs for Hydrostatic Pressure Test... 14 5.8 Re-test of Guided Bending Test... 15 5.9 Inspection of Skill Assessment of Repair Welding Operators... 15 5.10 Equivalent Standard for Qualification Accreditation of Non-destructive Testing Personnel... 15 5.11 Equipment Calibration of Weld Radiographic Inspection... 15 5.12 The European Pipeline Research Group (EPRG) Guidelines - Method 1... 16 5.13 Ordering of PSL 2 Steel Pipes for Pure Hydrogen Transmission Pipelines... 21 5.14 Evaluation of Abnormal Fractures in Drop Weight Tear (DWT) Test... 21 5.15 Markings... 21 Appendix A (informative) Ordering of PSL 2 Steel Pipes for Pure Hydrogen Transmission Pipelines... 23 A.1 Overview... 23 A.2 Additional Information Provided by the Purchaser... 23 A.3 Manufacturing... 24 A.4 Acceptance Limits... 25 A.5 Surface Conditions, Imperfections and Defects... 29 A.6 High-frequency Welding (HFW) Pipe Weld Seam Burrs... 30 A.7 Inspection... 30 A.8 Markings of Steel Pipes... 36 Appendix B (informative) Recommended Practice for Evaluation of Abnormal Fractures in DWT Test... 37 B.1 Overview... 37 B.2 Definition and Classification of Abnormal Fractures... 37 B.3 Evaluation of Abnormal Fractures... 39 Bibliography... 40ForewordThis document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for Standardization - Part 1.Rules for the Structure and Drafting of Standardizing Documents. This document serves as a replacement of GB/T 9711-2017 Petroleum and Natural Gas Industries - Steel Pipe for Pipeline Transportation Systems. In comparison with GB/T 9711- 2017, apart from structural adjustments and editorial modifications, the main technical changes are as follows. a) The Scope is modified (see Chapter 1; Chapter 1 of Version 2017); b) Some terms and definitions are deleted (see Chapter 4 of Version 2017); c) Some symbols and abbreviations are added (see Chapter 3); d) The information provided by the purchaser is modified (see Chapter 4; Chapter 7 of Version 2017); e) The content of heat treatment of laser welded steel pipes and PSL 2 high frequency welded steel pipe welds and HAZ is modified (see 5.1; 8.8.2 of Version 2017); f) The requirements for the local straightness deviation of the pipe end are modified (see 5.1; 9.11.3.4 of Version 2017); g) The requirements for the perpendicularity of the pipe end are added (see 5.1); h) The dimensions of the impact specimens are modified (see 5.1; Table 22 of Version 2017); i) The dimensions of the bending dies of the wall thickness reduction specimens in the guided bending test are modified (see 5.1; 10.2.4.6 of Version 2017); j) The requirements for welded butt steel pipes are modified (see 5.1; Appendix A of Version 2017); k) The position drawing of the weld hardness test of the HFW pipe that is normalized or quenched and tempered throughout the pipe is added [see 5.1; Figure H.1 d) and Figure J.1 d) of Version 2017]; l) The content of ordering PSL 2 steel pipes with longitudinal plastic strain capacity service conditions is added (see 5.1); m) The steel grade when ordering PSL 2 steel pipes resistant to ductile fracture propagation for gas pipelines when the agreement stipulates the banded structure, grain size and inclusion requirements of raw materials (see 5.2; 8.3.3 of Version 2017); n) The requirements for hydrostatic pressure test of butt-joined steel pipes are modified (see 5.3; 9.4.2 of Version 2017); o) The content of PSL 2 steel pipe hardness test is added (see 5.4); p) The requirements for bevel cutting are deleted (see 9.12.1.4 of Version 2017); q) The requirements for the maximum allowable outer weld bead height at the pipe ends of SAW pipes and COW pipes are modified (see 5.5; 9.13.2.2 of Version 2017); r) The requirements for the sampling location of impact specimens in the heat affected zone during weld misalignment are added (see 5.6); s) The requirements for the actual pressure when using end seal plugs for hydrostatic pressure tests are added (see 5.7); t) The requirements for the re-test of the guided bending test are modified (see 5.8; 10.2.12.5 of Version 2017); u) The inspection of the skill assessment of repair welding operators is modified (see 5.9; D.3.1.2 of Version 2017); v) An equivalent standard for qualification accreditation of non-destructive testing personnel is added (see 5.10; E.1.1 of Version 2017); w) The specific requirements for ISO wire type image quality meter for real-time imaging inspection of weld radiographic inspection are added (see 5.11.1); x) The requirements for digital radiographic inspection calibration are modified (see 5.11.2; E.4.4.3 of Version 2017); y) The content of Method 1 of The European Pipeline Research Group (EPRG) Guidelines is modified (see 5.12; G.7 of Version 2017); z) The requirements for the local straightness deviation of the pipe end of PSL 2 steel pipes under offshore service conditions are deleted [see J.6.4 b) of Version 2017]. This document modifies and adopts ISO 3183.2019 Petroleum and Natural Gas Industries - Steel Pipe for Pipeline Transportation Systems. In comparison with ISO 3183.2019, this document makes the following structural adjustments. ---Chapter 4 corresponds to 4.3 of ISO 3183.2019; ---Chapter 5 corresponds to Chapter 4 of ISO 3183.2019. The technical differences between this document and ISO 3183.2019, and the causes for these differences are as follows. ---The Scope is modified (see Chapter 1) and the content of steel pipes for pure hydrogen transportation pipelines is added; ---The normative reference GB/T 9253 is added to satisfy the actual demands; ---The information provided by the purchaser is modified (see Chapter 4) to satisfy the actual demands; ---The circumstance that when ordering PSL 2 steel pipes resistant to ductile fracture propagation for gas pipelines, if agreed upon, the purchaser may specify the banded structure, grain size and inclusion requirements of the raw materials is added (see 5.2) to satisfy the actual demands; ---The requirements for hydrostatic pressure test of butt-joined steel pipes are modified (see 5.3) to satisfy the actual demands; ---The content of PSL 2 steel pipe hardness test is added (see 5.4) to satisfy the actual demands; ---The requirements for the maximum allowable outer weld bead height at the pipe ends of SAW pipes and COW pipes are modified (see 5.5) to satisfy the actual demands; ---The requirements for the sampling location of impact specimens in the heat affected zone during weld misalignment are added (see 5.6) to satisfy the actual demands; ---The requirements for the actual pressure when using end seal plugs for hydrostatic pressure test are added (see 5.7) to satisfy the actual demands; ---The inspection of the skill assessment of repair welding operators is modified (see 5.9) to satisfy the actual demands; ---An equivalent standard for the qualification accreditation of non-destructive testing personnel is added (see 5.10) to satisfy the actual demands; ---The specific requirements for ISO wire type image quality meter for real-time imaging inspection of weld radiographic inspection are added (see 5.11.1) to satisfy the actual demands; ---The content of Method 1 of The European Pipeline Research Group (EPRG) Guidelines is modified (see 5.12) to satisfy the actual demands; ---The content regarding the ordering of PSL 2 steel pipes for European land natural gas transmission pipelines is deleted (see 4.2 and Appendix A of ISO 3183.2019), because there is no such demand in China. This document makes the following editorial modifications. ---Appendix A (informative) “Ordering of PSL 2 Steel Pipes for Pure Hydrogen Transmission Pipelines” is added; ---Appendix B (informative) “Recommended Practice for Evaluation of Abnormal Fractures in DWT Test” is added. Please be noted that certain content of this document may involve patents. The institution issuing this document does not undertake the responsibility of identifying these patents. This document was proposed by and shall be under the jurisdiction of National Technical Committee 355 on Petroleum of Standardization Administration of China (SAC/TC 355). The drafting organizations of this document. CNPC BAOJI Petroleum Steel Pipe Co., Ltd.; CNPC Tubular Goods Research Institute; CNPC Bohai Equipment Manufacturing Co., Ltd.; CNPC National Petroleum and Natural Gas Pipe Engineering Technology Research Center Co., Ltd.; National Pipeline Network Group Northern Pipeline Co., Ltd. The main drafters of this document. Bi Zongyue, Gao Xia, Wang Shaohua, Zhang Jingang, Liu Bin, Fang Wei, Chen Xiaowei, Song Fei, Mao Nongzhao, Liu Chengkun, Zhu Shaohua, Fu Hongqiang, Xue Leihong, Song Haihui, Xi Shaopeng, Feng Hui, Han Xiulin, Li Jianyi, Zhang Yi, Wang Yicen. The issuing of the previous versions. ---Firstly issued in 1988 as GB 9711-1988; ---Firstly revised in 1997 as GB/T 9711.1-1997 Petroleum and Natural Gas Industries - Steel Pipe for Pipelines - Technical Delivery Conditions – Part 1.Pipes of Requirement Class A; ---In the second revision in 2011, the contents of GB/T 9711.2-1999 Petroleum and Natural Gas Industries - Steel Pipe for Pipelines - Technical Delivery Conditions - Part 2.Pipes and Requirements Class B and GB/T 9711.3-2005 Petroleum and Natural Gas Industries - Steel Pipe for Pipelines - Technical Delivery Conditions - Part 3.Pipes of Requirements Class C are incorporated; ---Thirdly revised in 2017; ---This is the fourth revision.1 ScopeThis document specifies the manufacturing requirements for welded steel pipes (hereinafter referred to as “welded pipes”) and seamless steel pipes (hereinafter referred to as “seamless pipes”) for the pipeline transportation systems of petroleum and natural gas industries, which include two product specification levels (PSL 1 and PSL 2).2 Normative ReferencesThe contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document. GB/T 9253 Petroleum and Natural Gas Industries - Threading, Gauging and Thread Inspection of Casing, Tubing, and Line Pipe Threads3 Terms, Definitions, Symbols and AbbreviationsThe terms, definitions, symbols and abbreviations defined in API Spec 5L.2018 are applicable to this document.4 Information Provided by the PurchaserIn addition to the provisions of Chapter 7 in API Spec 5L.2018, for a specific order batch, if agreed upon, the order contract shall indicate which of the following terms apply.5 Technical RequirementsIf the pipe sections used for welding butt-joined steel pipes have been subjected to hydrostatic pressure test and qualified before butt-joining, if agreed upon, the butt-joined steel pipes may be exempted from the hydrostatic pressure test. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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