GB/T 29047-2021 English PDFUS$498.00 · In stock
Delivery: <= 2 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 29047-2021: Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes Status: Valid GB/T 29047: Historical versions
Basic dataStandard ID: GB/T 29047-2021 (GB/T29047-2021)Description (Translated English): Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: P46 Word Count Estimation: 34,325 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 29047-2021: Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes---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. Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes ICS 91.140.10 CCSP46 National Standards of People's Republic of China Replace GB/T 29047-2012 High-density polyethylene outer protective tube rigid polyurethane foam Prefabricated direct buried insulation pipe and pipe fittings Released on 2021-08-20 2022-03-01 implementation State Administration of Market Supervision and Administration Issued by the National Standardization Management Committee Table of contentsForeword Ⅰ Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Product structure 2 5 Requirements 3 5.1 Working steel pipe 3 5.2 Steel pipe fittings 3 5.3 Outer protective tube 7 5.4 Insulation layer 10 5.5 Insulation pipe 10 5.6 Insulation pipe fittings 13 6 Test method 17 7 Inspection rules 17 7.1 Inspection classification 17 7.2 Factory inspection 19 7.3 Type inspection 20 8 Identification, transportation and storage 20 8.1 Identification 20 8.2 Transportation 21 8.3 Storage 21 Appendix A (normative) Actual continuous working conditions and expected life of insulated pipe 22 Appendix B (Normative) Welding and Inspection of Outer Protective Pipe 24 References 28ForewordThis document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document replaces GB/T 29047-2012 "High-density polyethylene outer protective pipe, rigid polyurethane foam plastic prefabricated direct buried insulation pipe and pipe Compared with GB/T 29047-2012, in addition to structural and editorial changes, the main technical changes are as follows. a) The requirements for working steel pipes have been changed (see 5.1, 5.1 of the.2012 edition); b) The requirements for steel pipe fitting materials have been changed (see 5.2.1, 5.2.1 of the.2012 edition); c) The requirements for the appearance of the bent part of the elbow have been changed (see 5.2.2.2, 5.2.2.1 of the.2012 edition); d) The requirements for the three links have been changed (see 5.2.3, 5.2.3 of the.2012 edition); e) The requirements for reducers have been changed (see 5.2.4, 5.2.4 in the.2012 edition); f) The requirements for fixed sections have been changed (see 5.2.5, 5.2.5 of the.2012 edition); g) The requirements of the implementation standards for welding procedure qualification have been changed (see 5.2.6.1, 5.2.6.1 of the.2012 edition); h) Change the welding requirements of steel pipe fittings (see 5.2.6.2, 5.2.6.2 of the.2012 edition); i) The requirements for weld quality have been changed (see 5.2.6.4, 5.2.6.4 in the.2012 edition); j) The requirements for the density of raw materials for the outer protective tube have been changed (see 5.3.1.2, 5.3.1.1 in the.2012 edition); k) Deleted the requirements for carbon black dispersion and carbon black content of the outer protective pipe raw materials (see 5.3.1.2 and 5.3.1.3 in the.2012 edition); l) The requirements for recycled materials have been changed (see 5.3.1.3, 5.3.1.4 in the.2012 edition); m) Deleted the long-term mechanical performance requirements of the outer protective tube raw materials (see 5.3.1.7 in the.2012 edition); n) The requirements for the density of the outer protective tube have been changed (see 5.3.2.2, 5.3.2.2 in the.2012 edition); o) The requirements for carbon black dispersion and carbon black content of the outer protective tube have been added (see 5.3.2.3, 5.3.2.4); p) The requirements for the elongation at break of the outer protective pipe have been changed (see 5.3.2.5, 5.3.2.3 of the.2012 edition); q) The requirements for the sampling quantity of the outer protective tube have been changed (see Table 2, Table 3 of the.2012 edition); r) The name of the long-term mechanical properties of the outer protective tube has been changed (see 5.3.2.8, 5.3.2.6 of the.2012 edition); s) The requirements for the outer diameter and wall thickness of the outer protective pipe have been changed (see 5.3.2.9, 5.3.2.7 of the.2012 edition); t) The requirement for the mass flow rate of the melt mass of the outer sheath has been added (see 5.3.2.10); u) The requirements for thermal stability of the outer protective tube have been added (see 5.3.2.11); v) The requirements for insulation materials have been changed (see 5.4.1, 5.4.1 in the.2012 edition); w) The requirements for the density of the insulation layer have been changed (see 5.4.4, 5.4.4 in the.2012 edition); x) The requirements for the closed cell ratio of the insulation layer have been changed (see 5.4.7, 5.4.7 in the.2012 edition); y) The requirements for the increase rate of the outer diameter of the insulation pipe and the insulation pipe fittings have been deleted, and the requirements for the maximum outer diameter of the outer protective pipe after foaming have been added (see 5.5.4, 5.6.4, 5.5.4, 5.6.4 of the.2012 version); z) The requirements for the axis eccentricity of insulation pipes and insulation pipe fittings have been changed (see 5.5.5, 5.6.6, and 5.5.5 and 5.6.6 of the.2012 edition); aa) The requirements for life expectancy and long-term temperature resistance have been changed (see 5.5.6, 5.5.6 of the.2012 edition); bb) The requirements for signal lines have been changed (see 5.5.9, 5.6.9, 5.5.9 and 5.6.10 in the.2012 edition); cc) The welding requirements of the outer protective pipe are changed (see 5.6.8.3, Appendix B,.2012 edition of 5.6.8.3, 5.6.8.4, 5.6.8.5); dd) Changed the minimum bending angle of the weld in Figure 9 (see Figure 9, Figure 9 in the.2012 edition); ee) The requirements for welding tightness have been changed (see 5.6.8.5, 5.6.8.7 in the.2012 edition); ff) Deleted the requirement of thermal insulation fixed section (see 5.6.9 of the.2012 edition); gg) The requirement for the minimum length of welded outer protective pipe has been added (see 5.6.11); hh) Deleted the requirements related to insulation joints (see 5.7 in the.2012 edition); i) The test method requirements are changed (see Chapter 6, Chapter 6 of the.2012 edition); j) The requirements for inspection items have been changed (see Table 10; Table 11 in the.2012 edition); kk) The requirements for sampling inspection of insulation pipes have been changed [see 7.2.4a), 7.2.4.1 of the.2012 edition]; l) The requirements for sampling inspection of insulation pipe fittings have been changed [see 7.2.4b), 7.2.4.2 of the.2012 edition; mm) Deleted the requirements for sampling inspection of insulation joints (see 7.2.4.3 and 7.2.4.4 in the.2012 edition); nn) The requirements for type inspection have been changed (see 7.3, 7.3 of the.2012 edition); oo) The labeling requirements have been changed (see 8.1.2, 8.1.3, 8.1.2, 8.1.3 of the.2012 edition); pp) The site requirements for insulation pipes/insulation pipe fittings have been changed (see 8.3.1, 8.3.1 of the.2012 edition); qq) Deleted Appendix B (see Appendix B of the.2012 edition); rr) Merged Appendix A and Appendix C (see Appendix A, Appendix A and Appendix C of the.2012 edition); ss) Appendix D has been changed (see Appendix B, Appendix D of the.2012 edition). Please note that some of the contents of this document may involve patents. The issuing agency of this document is not responsible for identifying patents. This document was proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China. This document is under the jurisdiction of the National Urban Heating Standardization Technical Committee (SAC/TC455). Drafting organizations of this document. Beijing Thermal Equipment Manufacturing Co., Ltd., China Urban Construction Research Institute Co., Ltd., Beijing Construction Engineering Quality Quantitative Testing Institute, Beijing Thermal Group Co., Ltd., Beijing Gas and Thermal Engineering Design Institute Co., Ltd., Tianjin Taihe Energy Conservation Section Technology Co., Ltd., Tangshan Xingbang Pipeline Engineering Equipment Co., Ltd., Harbin Langest Energy-saving Technology Co., Ltd., Hebei Haotian Thermal Development Co., Ltd., Tianjin Yugang Thermal Insulation Building Material Co., Ltd., Dalian Yiduo Pipeline Co., Ltd., Sanjie Energy-saving New Material Co., Ltd., Dalian Kaiyuan Pipeline Co., Ltd., Langfang Huayu Tianchuang Energy Equipment Co., Ltd., Beijing Energy Conservation and Environmental Protection Center, Tianhua Chemical Machinery and Automation Research Design Institute Co., Ltd., Dow Chemical (China) Investment Co., Ltd., Yantai Shunda Polyurethane Co., Ltd., Shanghai Kehua Heating Pipeline Co., Ltd., Dalian Kehua Heating Pipeline Co., Ltd., Haotian Energy-saving Equipment Co., Ltd., Hebei Junye Technology Co., Ltd. The main drafters of this document. Jia Lihua, Wang Yan, Luo Teng, Bai Dongjun, Zhang Lishen, Sun Lei, Luo Zheng, Han Chengpeng, Gao Hongze, Zhou Yuecong, Qiu Huawei, Wang Hui, Zheng Zhongsheng, Yan Bixing, Han Defu, Chen Peng, Cong Shujie, Ye Lianji, Wang Guiqing, Jia Hongqing, Cao Jingming, Guo Lanfang, Li Zhonggui, Chen Lei, Yang Qiu, Lang Kuiyuan, Pan Cunye. This document was first published in.2012, and this is the first revision.IntroductionThis document is formulated based on the national conditions of my country's central heating industry and combined with years of engineering experience. This document contains direct buried insulation pipes, direct buried insulation Two parts of pipe fittings. The revised standard no longer includes the content of directly buried insulation joints, and the requirements for directly buried insulation joints are shown in GB/T 38585. High-density polyethylene outer protective tube rigid polyurethane foam Prefabricated direct buried insulation pipe and pipe fittings1 ScopeThis document stipulates that the high-density polyethylene outer protective pipe (hereinafter referred to as the outer protective pipe) and the rigid polyurethane foam insulation layer (hereinafter referred to as the protective Temperature layer), prefabricated direct-buried thermal insulation pipes composed of working steel pipes or steel pipe fittings (hereinafter referred to as thermal insulation pipes) and the product structure and requirements of thermal insulation pipe fittings, Test methods, inspection rules and labels, transportation and storage. This document is applicable to the prefabricated direct delivery medium whose temperature (long-term operating temperature) is not more than 120℃, and the occasional peak temperature is not more than 130℃. Buried insulation pipe and its insulation pipe fittings.2 Normative referencesThe contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to This document. GB/T 3091 Welded steel pipe for low pressure fluid transportation GB/T 8163 Seamless steel pipe for conveying fluid GB/T 8923.1-2011 Visual assessment of surface cleanliness of steel surface treatment before coating-Part 1.Uncoated The corrosion level and treatment level of the steel surface and the steel surface after the original coating has been completely removed GB/T 9711 Steel Pipe for Pipeline Transportation System of Petroleum and Natural Gas Industry Types and parameters of GB/T 12459 steel butt welding pipe fittings GB/T 13401 Technical Specification for Steel Butt Welding Pipe Fittings GB/T 18475-2001 Thermoplastic pressure pipes and pipe fittings material classification and naming overall use (design) coefficient GB/T 29046 Testing method for technical indicators of prefabricated direct-buried thermal insulation pipelines for urban heating GB 50236 Construction specification for welding engineering of field equipment and industrial pipelines GB 50683 Code for Acceptance of Construction Quality of Field Equipment and Industrial Pipeline Welding Engineering CJJ/T 254 Technical Specification for Leakage Monitoring System of Directly Buried Hot Water Pipes for Urban Heating NB/T 47013.2-2015 Non-destructive testing of pressure equipment Part 2.Radiographic testing NB/T 47013.3-2015 Non-destructive testing of pressure equipment Part 3.Ultrasonic testing NB/T 47013.5-2015 Non-destructive testing of pressure equipment Part 5.Penetration testing NB/T 47014 welding procedure qualification for pressure equipment SY/T 5257 Steel induction heating elbow for oil and gas transportation3 Terms and definitionsThe following terms and definitions apply to this document. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 29047-2021_English be delivered?Answer: Upon your order, we will start to translate GB/T 29047-2021_English as soon as possible, and keep you informed of the progress. 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Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.Question 5: Should I purchase the latest version GB/T 29047-2021?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 29047-2021 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically. |
