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GB/T 1047-2019 English PDF (GB/T 1047-2005, GB/T 1047-1995)

GB/T 1047-2019_English: PDF (GB/T1047-2019)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 1047-2019English75 Add to Cart 0--9 seconds. Auto-delivery Pipework components -- Definition and selection of nominal size Valid GB/T 1047-2019
GB/T 1047-2005English70 Add to Cart 0--9 seconds. Auto-delivery Pipework components -- Definition and selection of DN (nominal size) Obsolete GB/T 1047-2005
GB/T 1047-1995English199 Add to Cart 2 days [Need to translate] Nominal size for pipe components Obsolete GB/T 1047-1995
GB 1047-1970English199 Add to Cart 2 days [Need to translate] Nominal inside diameters for pipes and pipe line accessories Obsolete GB 1047-1970


BASIC DATA
Standard ID GB/T 1047-2019 (GB/T1047-2019)
Description (Translated English) Pipework components -- Definition and selection of nominal size
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J15
Classification of International Standard 23.040.60
Word Count Estimation 6,631
Date of Issue 2019-03-25
Date of Implementation 2019-10-01
Drafting Organization China Machinery Productivity Promotion Center, Sinopec Engineering Construction Co., Ltd., China Metallurgical Jingcheng Engineering Technology Co., Ltd., China Machinery Guoneng Electric Power Engineering Co., Ltd., China Energy Construction Group Guangdong Electric Power Design and Research Institute Co., Ltd., Chaoda Valve Group Co., Ltd. Company, China Shipbuilding Industry Research Institute of Comprehensive Technology and Economics, Saint-Gobain Pipeline System Co., Ltd., East China University of Science and Technology
Administrative Organization National Technical Committee for Standardization of Piping Accessories (SAC/TC 237)
Proposing organization China Machinery Industry Federation
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

BASIC DATA
Standard ID GB/T 1047-2005 (GB/T1047-2005)
Description (Translated English) Pipework components. Definition and selection of DN(nominal size)
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J15
Classification of International Standard 23.040.60
Word Count Estimation 4,427
Date of Issue 2005-01-13
Date of Implementation 2005-08-01
Older Standard (superseded by this standard) GB/T 1047-1995
Adopted Standard ISO 6708-1995; MOD
Drafting Organization Mechanical Engineering Research Institute
Administrative Organization National Standardization Technical Committee piping accessories
Regulation (derived from) Announcement of Newly Approved National Standards No. 2, 2005 (No. 76 overall)
Proposing organization China Machinery Industry Federation
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China, China National Standardization Administration Committee
Summary This standard specifies: DN-definition and series. This standard applies to: Use the DN identity as specified in the relevant standard piping components.

BASIC DATA
Standard ID GB/T 1047-1995 (GB/T1047-1995)
Description (Translated English) Nominal size for pipe components
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J15
Classification of International Standard 23.040.90
Word Count Estimation 4,478
Date of Issue 1995/6/15
Date of Implementation 1996/2/1
Older Standard (superseded by this standard) GB 1047-1970
Regulation (derived from) Announcement of Newly Approved National Standards 2005 No. (No. 76 overall) 2
Proposing organization Ministry of Machinery Industry of the People Republic of China
Issuing agency(ies) State Bureau of Technical Supervision


GB/T 1047-2019 NATIONAL 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 Contents Foreword ... 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 ... 6 Foreword This 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 size 1 Scope This 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 definitions For 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 selection 3.1 The preferred DN values are as follows: ......


GB/T 1047-2005 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 23.040.60 J 15 Replacing GB/T 1047-1995 Pipework components - Definition and selection of DN (nominal size) (ISO 6708.1995, MOD) ISSUED ON. JANUARY 13, 2005 IMPLEMENTED ON. AUGUST 01, 2005 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration of PRC. Table of Contents Foreword ... 3  1 Scope ... 4  2 Definition ... 4  3 DN series ... 4  Pipework components - Definition and selection of DN (nominal size) 1 Scope This standard specifies the definition and series of DN (nominal size). This standard applies to pipework components specified in the relevant standards using the DN marking. Note. Other size marking methods different from this standard can also be used, such as the pipework components of threading, press fitting, socket welding or butt welding, or the pipework components which are marked by NPS (nominal pipe size), OD (outer diameter), ID (inner diameter) or G (pipe thread size marking). 2 Definition DN. Size marking for the combination of letters and numbers for piping system components. It consists of the letter DN followed by a dimensionless integer number. This number is directly related to the feature size such as the hole diameter or outer diameter (in mm) of the end connector. Note 1. Except as otherwise provided in the relevant standards, the number after the letter DN does not represent the measured value and cannot be used for calculation purposes. Note 2. For those standards using the DN marking system, it shall give the relationship between the DN and the size of the pipework components, such as DN/OD or DN/ID. 3 DN series The preferred DN values are as follows. ......

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