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GB/T 1047-2019 (GBT 1047-2019)

Chinese standards (related to): 'GB/T 1047-2019'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)See DetailStatusGoogle Book
GB/T 1047-2019English75 Add to Cart 0--3 minutes. Auto immediate delivery. Pipework components -- Definition and selection of nominal size GB/T 1047-2019 Valid GBT 1047-2019
GB/T 1047-2005English70 Add to Cart 0--3 minutes. Auto immediate delivery. Pipework components -- Definition and selection of DN (nominal size) GB/T 1047-2005 Obsolete GBT 1047-2005
GB/T 1047-1995English199 Add to Cart 2 days Nominal size for pipe components GB/T 1047-1995 Obsolete GBT 1047-1995
GB 1047-1970English199 Add to Cart 2 days Nominal inside diameters for pipes and pipe line accessories GB 1047-1970 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 6,629
Date of Issue 2019-03-25
Date of Implementation 2019-10-01
Older Standard (superseded by this standard) GB/T 1047-2005
Drafting Organization China National Machinery Productivity Promotion Center, Sinopec Engineering Construction Co., Ltd., China Metallurgical Jingcheng Engineering Technology Co., Ltd., Zhongji Guoneng 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 Comprehensive Technology and Economic Research Institute, Saint-Gobain Pipeline System Co., Ltd., East China University of Science and Technology
Administrative Organization National Pipeline Attachment Standardization Technical Committee (SAC/TC 237)
Regulation (derived from) National Standard Announcement No. 3 of 2019
Proposing organization China Machinery Industry Federation
Issuing agency(ies) State Administration of Markets and China National Standardization Administration


GB/T 1047-2019: PDF in English (GBT 1047-2019)
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:
......