GB/T 34275-2024 English PDF

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GB/T 34275-2024: Pressure piping code - Transmission pipeline
Status: Valid

GB/T 34275: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 34275-2024	3189	Add to Cart	11 days	Pressure piping code - Transmission pipeline	Valid
GB/T 34275-2017	RFQ	ASK	3 days	Pressure piping code -- Long-distance pipeline	Valid

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GB/T 34527   GB/T 34530.1   GB/T 34510   GB/T 45439   GB/T 13077   

Basic data

Standard ID: GB/T 34275-2024 (GB/T34275-2024)
Description (Translated English): Pressure piping code - Transmission pipeline
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J74
Classification of International Standard: 23.040
Word Count Estimation: 182,188
Date of Issue: 2024-12-31
Date of Implementation: 2024-12-31
Older Standard (superseded by this standard): GB/T 34275-2017
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 34275-2024: Pressure piping code - Transmission pipeline

---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 23.040 CCSJ74 National Standard of the People's Republic of China Replaces GB/T 34275-2017 Pressure Pipeline Specification Long Distance Pipeline Released on 2024-12-31 2024-12-31 implementation State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III 1 Scope 1 2 Normative references 2 3 Terms and Definitions 6 4 Basic Provisions12 5 Materials 12 6 Design and calculation 25 7 Construction and installation 55 8 Inspection and testing 80 9 Security Protection 87 10 put into production and trial operation 90 11 Pipeline use and maintenance 92 12 Pipeline maintenance and repair 95 Appendix A (Informative) Composition of Long Distance Pipelines 100 Appendix B (Normative) Standards and grades for selection of materials for pipeline components 101 Appendix C (Informative) Comparison of domestic and foreign material grades 107 Appendix D (Normative) Supplementary conditions for increasing the low temperature impact test temperature or exempting the low temperature impact test for venting pipelines 114 Appendix E (Informative) Recommended Specification Range and Quality Control Points for High Frequency Welded Steel Pipes 115 Appendix F (Informative) Comparison of domestic valve and foreign valve standards 117 Appendix G (Informative) Comparison of domestic and foreign welding materials 120 Appendix H (Informative) Flow Rate Design 124 Appendix I (Informative) Relationship between pipeline pressure and pressure control devices and pressure safety devices 125 Appendix J (Informative) Station Pipeline Layout 126 Appendix K (Normative) Flexibility Factor and Stress Intensification Factor 128 Appendix L (Informative) Critical axial force and calculated bending radius for the beginning of instability of buried pipelines 131 Appendix M (Informative) Groove Form and Assembly Dimensions 134 Appendix N (Informative) Analytical method for calculating stress of immersed pipe trench 138 Appendix O (Informative) Method for assessing the deviation of the joint assembly of pipelines at the station 142 Appendix P (Informative) Effect of residual air on pressure test water and calculation of air content 144 Appendix Q (Informative) Calculation Method for Temperature-Pressure Relationship of Liquid in Closed Pipes 150 Appendix R (Informative) Safety Valve Calculation Method 152 Appendix S (Informative) Calculation Method for Emergency Venting Time of Gas Pipeline Stations 156 Appendix T (Normative) Requirements for Periodic Inspection of Pipelines at Stations 157 Appendix U (Normative) Pipeline Maintenance and Repair Methods 169 References 175

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB/T 34275-2017 "Pressure Pipeline Specifications for Long-distance Pipelines". Compared with GB/T 34275-2017, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows. a) The scope description and schematic diagram of the pipelines to which this document applies have been modified (see Chapter 1, Chapter 1 of the.2017 edition); b) Modified some terms and definitions (see Chapter 3, Chapter 3 of the.2017 edition); c) Added basic provisions (see Chapter 4); d) Added relevant technical requirements for high-grade pipeline steel pipes and induction heating bending pipes (see 5.2.1.4, 5.2.1.5, 5.2.1.8, 5.2.4.7, 5.2.4.15, 5.2.4.17); e) Added pipe support materials (see 5.3); f) Added the following information. filler metal, flux, diffusible hydrogen content of deposited metal, impact toughness of deposited metal, selection of filler metal and welding material complexity Inspection requirements (see 5.4); g) Deleted the transportation technology, process flow, utility engineering design, communication and control (see 5.3, 5.6, 5.7.4, 5.8 of the.2017 edition); h) Added design unit, design approval stamp, design documents and other requirements (see 6.1); i) Added strength design method (see 6.2.1); j) The design pressure and design temperature provisions have been modified (see 6.2.2, 6.2.3, and 5.1.2, 5.1.3 of the.2017 edition); k) Added the allowable pressure variation range (see 6.2.4); l) Added the list of pipeline component product standards applicable to long-distance pipelines (see 6.3.1); m) Added calculation requirements for branch pipe connections, selection and strength design provisions for reducers, pipe caps, orifice plates, flanges, etc. (see 6.3); n) Added the design, manufacturing and pressure testing provisions for pipeline component assembly devices (see 6.3.11); o) Added the design requirements for pipeline supports (see 6.4); p) Modified the requirements for valve room location and the distance between it and surrounding structures (see 6.5.4, 5.4.3 of the.2017 edition); q) The application scope of pipeline stress analysis in this document has been increased (see 6.9.1); r) Added the calculation formula for the combined stress of fully constrained pipelines without considering torsional stress (see 6.9.5); s) The stress verification criteria for oil pipelines have been modified (see 6.9.5, 5.7.3 of the.2017 edition); t) Added local buckling check of pipeline (see 6.9.6); u) Added pipeline installation units, construction notifications, installation supervision inspections, installation process documents, design changes, installation quality certification documents, Qualification requirements, machinery and equipment and other requirements (see 7.1); v) Added the requirements for groove processing at the pipeline construction site (see 7.3.5); w) The relevant provisions for pipeline trenching have been revised, and relevant requirements for immersed pipe trenching have been added (see 7.3.9, 6.7 of the.2017 edition); x) Added relevant construction requirements for direct pipe laying crossing (see 7.4.2); y) Modified the relevant provisions on cutting and processing (see 7.5.2, 7.2 of the.2017 edition); z) Modified the relevant provisions on pipe opening assembly and welding of station pipelines (see 7.5.3, 7.5.2 of the.2017 edition); aa) Modified the relevant provisions on pipe unit prefabrication and pipeline installation (see 7.5.4, 7.2.3 of the.2017 edition); ab) Added provisions for flange connection and other connection installation (see 7.5.5); ac) Added provisions for electrostatic grounding (see 7.5.11); ad) Modified the relevant provisions on line pipeline pigging and diameter measurement and station pipeline purging and cleaning (see 7.7, 6.10 and 7.7.2 of the.2017 edition); ae) Modified the relevant provisions on pipeline drying (see 7.8, 6.12 and 7.7.4 of the.2017 edition); af) Deleted steel structure installation, HVAC, fire protection, electrical, automation instrumentation and other projects (see 7.9 and 7.10 of the.2017 edition); ag) Added general provisions for inspection and testing (see 8.1); ah) Modified the relevant provisions on appearance inspection (see 8.2, 8.2.2 of the.2017 edition); ai) Added the selection principles of non-destructive testing methods (see 8.3.1, 8.3.2); aj) Added provisions for performance verification of non-destructive testing equipment during access and use (see 8.3.3); ak) Modified the principles for the preparation of non-destructive testing process documentation and the relevant provisions for process verification (see 8.3.4, 8.1.3 of the.2017 edition); a1) Modified the relevant provisions on line pipeline inspection ratio (see 8.3.5, 8.2.4.1 of the.2017 edition); am) Modified the relevant provisions on the inspection ratio of pipelines in stations (see 8.3.7, 8.2.4.4 of the.2017 edition); an) Modified the relevant provisions on the qualification level of welding joints of line pipelines and station pipelines (see 8.3.8, 8.2.6 of the.2017 edition); ao) Added the pressure test provisions for station process auxiliary pipelines (see 8.4.8); ap) Added safety protection provisions (see Chapter 9); aq) Modified the general provisions for trial operation (see 10.1, 9.1 of the.2017 edition); ar) Added requirements for pre-production organizational structure, personnel positions, production plan, etc. (see 10.2.3, 10.2.4); as) Added line pipeline management and station pipeline maintenance (see 11.3, 11.4); at) The inspection of in-service pipelines has been modified (see 11.5, Chapter 12 of the.2017 edition); au) Added pipeline corrosion control (see 11.6); av) Added the material selection standards and grade requirements for pipeline components (see Appendix B); aw) Added additional conditions for increasing the low-temperature shock test temperature or exempting the low-temperature shock test for venting pipelines (see Appendix D); ax) Added the calculation and selection requirements for flexibility coefficient and stress intensification factor (see Appendix K); ay) Added the periodic inspection requirements for station pipelines (see Appendix T); az) Pipeline maintenance and repair methods (see Appendix U). Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the National Technical Committee for Boiler and Pressure Vessel Standardization (SAC/TC262). This document was drafted by. China National Petroleum and Natural Gas Pipeline Network Co., Ltd., China National Pipeline Network Engineering Technology Innovation Co., Ltd., China Petroleum and Natural Gas Pipeline Research Institute Co., Ltd., State Administration for Market Regulation, National Pipeline Network Group Storage and Transportation Technology Development Co., Ltd., China Special Equipment Testing and Research Institute, China Petroleum and Natural Gas Pipeline Engineering Co., Ltd., National Pipeline Network Group Construction Project Management Branch, National Pipeline Network Group Northern Pipeline Co., Ltd., National Pipeline Network Group Engineering Quality Supervision and Inspection Co., Ltd., National Pipeline Network Group Northeast Company, Pipeline Network Group (Xuzhou) Pipeline Inspection and Testing Co., Ltd., National Pipeline Network Group Gansu Branch, China Petroleum Pipeline Bureau Engineering Co., Ltd., Guangdong Special Equipment Testing and Research Institute, Sinopec Shanghai Engineering Co., Ltd., Guangdong Special Equipment Testing and Research Institute Zhongshan Testing Institute, Shanghai Xunyu Chemical Engineering High Technology Center. The main drafters of this document are. Hu Ying, Sun Ligang, Liu Yu, He Renyang, Pang Xinfeng, Qin Xianyong, Tian Yu, Yan Bingchuan, Liu Haichun, Li Xiaoyu, Li Zengcai, Geng Liyuan, Liu Houping, Zuo Yong, Li Jun, Yao Dengzun, Li An, Deng Jun, Shi Mibo, Liu Jun, Lü Xinyu, Chen Yubao, Zhang Xiaoqiang, Wang Cheng, Liu Song, Huang Zhenglin, Jiang Qingmei, Bu Mingzhe, Xi Jingjun, Wang Baosong, Han Tao, Wang Junqiang, Liu Yingjie, Yin Changhua, Song Ming, Wang Chunlin, Chen Shan, Yang Yong, Zhang Hongbing, Zhou Guang, Luo Peng, You Zihan, Ma Honglian, Tao Jianghua, Liu Shaozhu, Yu Lijun, Mao Pingping, Yu Qingfeng, Yang Ling, Fu Liwu, Guo Yifan, Wang Meng. The previous versions of this document and the documents it replaces are as follows. ---First published in.2017 as GB/T 34275-2017; ---This is the first revision. Pressure Pipeline Specification Long Distance Pipeline

1 Scope

1.1 This document specifies the materials, design, calculation, construction and installation, inspection and testing, safety protection, trial operation and commissioning of onshore oil and gas long-distance pipelines. Basic requirements for production, use, maintenance and emergency repair. Note. For the composition of long-distance pipelines, see Appendix A. 1.2 The scope of onshore long-distance oil and gas pipelines is shown in Figure 1.The pipelines within the solid lines and solid frame in the figure are applicable to this document. Note. Long-distance pipelines extend into refineries, oil depots, city gas gate stations, gas storage facilities, LNG receiving stations, gas power plants, oil (gas) processing plants and other factory boundaries. The interface between long-distance pipelines and other types of pipelines is described in the design documents. Figure 1 Pipeline scope to which this document applies ......

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