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GB/T 1047-2019: Pipework components - Definition and selection of nominal size 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 1047: Historical versions
Similar standardsGB/T 1047-2019: Pipework components - Definition and selection of nominal size---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/GBT1047-2019NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 23.040.60 J 15 Replacing GB/T 1047-2005 Pipework components - Definition and selection of nominal size (ISO 6708:1995, Pipework components - Definition and selection of DN (nominal size), NEQ) ISSUED ON: MARCH 25, 2019 IMPLEMENTED ON: OCTOBER 1, 2019 Issued by: State Administration for Market Regulation; Standardization Administration of the People's Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Terms and definitions ... 4 3 DN series and selection ... 4 Annex A (Informative) Correspondence between nominal size (DN) and NPS ... 6ForewordThis Standard was drafted in accordance with the rules given in GB/T 1.1-2009. This Standard replaces GB/T 1047-2005, Pipework components – Definition and selection of DN (nominal size). Compared with GB/T 1047-2005, in addition to editorial changes, the major technical changes are as follows: -- it adds nominal sizes DN 550, DN 650, DN 750, DN 850, DN 950, DN 1050, DN 1150, DN 1300, DN 1700, DN 1900, DN 2100, DN 2300, DN 2500, DN 2700, DN 2700 and DN 2900 (see 3.1; Clause 3 of 2005 edition); -- it adds the correspondence between nominal size DN and NPS (see Annex A). This Standard was redrafted by referencing to ISO 6708:1995, Pipework components – Definition and selection of DN (nominal size). This standard was nonequivalent to ISO 6708:1995. This Standard was proposed by the China Machinery Industry Federation. This Standard shall be under the jurisdiction of National Technical Committee 237 on Pipeline Fittings of Standardization Administration of China (SAC/TC 237). The drafting organizations of this Standard: China Productivity Center for Machinery, Sinopec Engineering Incorporation, MCC Capital Engineering and Research Incorporation Co., Ltd., China Sinogy Electric Engineering Co., Ltd., China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd., Chaoda Valve Group Co., Ltd., China Institute of Marine Technology and Economy, Saint- Gobain Pipework System Co., Ltd., East China University of Science and Technology. The main drafters of this Standard: Li Junying, Feng, Zhao Yong, Wu Shiming, Lin Qilve, Huang Tao, Qiu Xiaolai, Zhang Meiling, He Gen, Zhang Lanzhu. The previous editions of the standard replaced by this Standard are as follows: -- GB/T 1047-1970, GB/T 1047-1995, GB/T 1047-2005. Pipework components - Definition and selection of nominal size1 ScopeThis Standard gives the definition of DN (nominal size) of pipework components, and specifies the nominal size series used for pipework components. This Standard applies to pipework components which use the DN designation system.2 Terms and definitionsFor the purposes of this document, the following terms and definitions apply. 2.1 nominal size An alphanumeric designation of size for components of a pipework system, which is used for reference purposes. It comprises the letters DN followed by a dimensionless whole number. NOTE 1: This dimensionless number is directly related to the physical size, in millimetres, of the bore or outside diameter of the end connections. NOTE 2: The number following the letters DN does not represent a measurable value and should not be used for calculation purposes except where specified in the relevant standard.3 DN series and selection3.1 The preferred DN values are as follows: ......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 1047-2019 be delivered?Answer: The full copy PDF of English version of GB/T 1047-2019 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 1047-2019_English with my colleagues?Answer: Yes. 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