GB/T 13295-2019 PDF EnglishUS$1495.00 · In stock · Download in 9 seconds
GB/T 13295-2019: [Including 2021XG1] Ductile iron pipes, fittings and accessories for water or gas applications 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 13295: Historical versions
Similar standardsGB/T 13295-2019: [Including 2021XG1] Ductile iron pipes, fittings and accessories for water or gas applications---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/GBT13295-2019 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 23.040.10; 23.040.40 H 48 Replacing GB/T 13295-2013 Ductile iron pipes, fittings and accessories for water or gas applications (ISO 2531.2009, Ductile iron pipes, fittings, accessories and their joints for water applications, MOD) [Including 2021XG1] Issued on. DECEMBER 10, 2019 Implemented on. APRIL 01, 2020 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 4 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 Technical requirements... 13 4.1 General... 13 4.2 Pressure, wall thickness and dimensional requirements... 16 4.3 Material characteristics... 23 4.4 Coating and linings for pipes... 24 4.5 Marking... 26 5 Leaktightness requirements... 27 5.1 Pipes and fittings... 27 5.2 Flexible joints... 27 5.3 Flanged joints as cast, screwed, welded and adjustable... 29 6 Test methods... 32 6.1 Dimensions... 32 6.2 Straightness of pipes... 33 6.3 Tensile test... 33 6.4 Brinell hardness... 35 6.5 Works leaktightness test of pipes and fittings... 36 6.6 Coating and linings... 37 7 Type tests... 38 7.1 General... 38 7.2 Leaktightness of joints to internal pressure... 38 7.3 Leaktightness of joints to outer pressure... 39 7.4 Leaktightness of joints under negative internal pressure... 40 7.5 Leaktightness of joints to cycle pressure... 40 7.6 Tightness and mechanical stress of flanged joints... 41 8 Factory inspection and quality certificate... 42 8.1 Inspection and acceptance... 42 8.2 Batch rules... 42 8.3 Sampling quantity... 42 8.4 Quality certificate... 42 9 Tables of dimensions... 43 9.1 Socket and spigot pipes... 43 9.2 Flanged pipes... 46 9.3 Fittings for socketed joints... 46 9.4 Fittings for flanged joints... 85 Appendix A (Informative) Comparison of chapter numbers of this Standard and chapter numbers of ISO 2531.2009... 102 Appendix B (Informative) Technical differences between this Standard and ISO 2531.2009 and their reasons... 105 Appendix C (Informative) Allowable pressure... 110 Appendix D (Informative) Dimensions of preferred pipe pressure classes... 113 Appendix E (Normative) Pipe wall thicknesses, diametral stiffness and diametral deflection... 115 Appendix F (Informative) External anti-corrosion... 123 Appendix G (Informative) Internal anti-corrosion... 125 Appendix H (Informative) Safety factors... 127 Appendix I (Normative) Quality assurance... 128 Appendix J (Informative) Condenser cylinder... 129 Bibliography... 132 No. 1 Amendment [2021XG1]... 132ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 13295-2013, Ductile iron pipes, fittings and accessories for water or gas applications; compared with GB/T 13295-2013, the major technical changes are as follows. -- Modify the description of some terms and definitions; -- Extend the scope of application of pressure classified pipes to specifications below DN2600; -- Add relevant requirements for ductile iron pipes, DN2800 and DN3000; -- Modify the zinc layer spray weight requirements for pressure classified pipes; -- Add the requirements for the type test of leaktightness of joints to cycle pressure; -- Adjust the wall thickness level of socket tee with single support and socket tee with flanged branch in fittings to K12. This Standard uses the redraft method to revise and adopt ISO 2531.2009 Ductile iron pipes, fittings, accessories and their joints for water applications. Compared with ISO 2531.2009, this Standard makes many adjustments in structure. Appendix A gives a comparison list in chapter numbers between this Standard and ISO 2531.2009. There are technical differences between this Standard and ISO 2531.2009; the terms which are involved in these differences have been marked by a vertical single line (|) on the outer page margins. Appendix B gives a list of technical differences between this Standard and ISO 2531.2009 and their reasons for reference. This Standard makes the following editorial changes. -- Change the standard name to Ductile iron pipes, fittings and accessories for water or gas applications. This Standard was proposed by China Iron and Steel Industry Association. This Standard shall be under the jurisdiction of National Technical Committee on Iron and Steel of Standardization Administration of China (SAC/TC 183). Drafting organizations of this Standard. Xinxing Ductile Iron Pipes Co., Ltd., Saint Gobain Piping System Co., Ltd., China Metallurgical Information and Standardization Institute, Suns Pipelines Company Limited, Anhui Hengsheng Science & Technology Development Group Co., Ltd., North China Municipal Engineering Design & Research Institute Co., Ltd., China Metallurgical Construction Research Institute Co., Ltd. Main drafters of this Standard. Li Chengzhang, Li Jun, Shen Yong, Wang Song, Sun Shu, Hou Jie, Fu Jian, He Gen, Ding Baohua, Wang Liangmei, Dong Jianzhong, Li Huacheng, Zhou Yan, Wang Jingyu, Liu Yanxue, Dong Li, Wang Qi, Wang Junjie, Ye Weihe, Li Jianwu, Li Xiaoliang. The previous version – replaced by this Standard – of the standard is. -- GB/T 13294-1991; -- GB/T 13295-1991, GB/T 13295-2003, GB/T 13295-2008, GB/T 13295-2013. Ductile iron pipes, fittings and accessories for water or gas applications1 ScopeThis Standard specifies the terms and definitions, technical requirements, test methods, dimensions and tolerances, inspection rules and quality certificate for ductile iron pipes, fittings, accessories and their joints for water or gas applications, which are processed by any type of casting process or assembled from cast iron parts; this Standard also gives the type test requirements for joint components.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 41-2016, Hexagon nuts, style 1 - Product grade C (ISO 4034.2012, MOD) GB/T 95, Plain washers - Product grade C (GB/T 95-2002, ISO 7091.2000, IDT)3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply. Ductile iron castings, other than pipes, which allow for line deflection, direction changes, branching, caliber changes, and joint type changes.4 Technical requirementsFlanged joints shall be designed to comply with GB/T 17241.6 or ISO 7005-2.Bolts and nuts shall comply, as a minimum, with the requirements of GB/T 5780-2016 and GB/T 41-2016, property class 4.6 and 5 respectively.5 Leaktightness requirementsThe leaktightness of joints to external pressure shall be type tested as specified in 7.3; the joints shall exhibit no visible leakage when subjected to a shear load, expressed in newtons, not less than 30 times the nominal diameter, DN. The test pressure shall be not less than 0.2 MPa.6 Test methodsThe inner diameter is measured by using suitable equipment such as templates and other tools to measure twice at a right angle to each other on the cross section at or above 200 mm from the end face, and calculating the average value of the two measurement results, or by using a go-no-go gauge for inspection. The straightness is usually visually inspected. In case of dispute, the following method shall be adopted for inspection.7 Type testsThe test assembly shall consist of two pipes or fittings with flanges of the same specification, which shall be assembled using the bolts and washers specified by the manufacturer.8 Factory inspection and quality certificateThe inspection and acceptance of ductile iron pipes and fittings is carried out by the manufacturer’s technical quality supervision department. When the product leaves the factory, a product quality certificate shall be attached, and the certificate shall at least include the following contents.9 Tables of dimensionsThe structure diagram of the double-socket 90° (1/4) bend is shown in Figure 8, and the dimensions of the double-socket 90° (1/4) bend shall comply with Table 19. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 13295-2019 be delivered?Answer: The full copy PDF of English version of GB/T 13295-2019 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 13295-2019_English with my colleagues?Answer: Yes. 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