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CJ/T 246-2018: Preformed directly buried steam insulating pipes and fittings for urban heating
Status: Valid CJ/T 246: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| CJ/T 246-2018 | English | 459 |
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Preformed directly buried steam insulating pipes and fittings for urban heating
| Valid |
CJ/T 246-2018
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| CJ/T 246-2007 | English | 479 |
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Technical specification of preformed directly buried steam insulating pipeline accessories for municipal heat-supply
| Obsolete |
CJ/T 246-2007
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PDF similar to CJ/T 246-2018
Basic data | Standard ID | CJ/T 246-2018 (CJ/T246-2018) | | Description (Translated English) | Preformed directly buried steam insulating pipes and fittings for urban heating | | Sector / Industry | Urban Construction Industry Standard (Recommended) | | Classification of Chinese Standard | P46 | | Classification of International Standard | 91.140.10 | | Word Count Estimation | 20,239 | | Date of Issue | 2018-08-24 | | Date of Implementation | 2019-04-01 | | Older Standard (superseded by this standard) | CJ/T 246-2007; CJ/T 200-2004 | | Quoted Standard | GB/T 985.1; GB/T 985.2; GB/T 3087; GB/T 3091; GB/T 3198; GB/T 8163; GB/T 8923.1-2011; GB/T 9711; GB/T 12459; GB/T 12777; GB/T 13401; GB/T 17393; GB/T 17430; GB/T 28638-2012; GB/T 29046; GB/T 29047-2012; CJJ 28; CJJ/T 104; JC/T 618; NB/T 47013.2-2015 | | Regulation (derived from) | Ministry of Housing and Urban-Rural Development Announcement 2018 No. 177 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China | | Summary | This standard specifies the terms and definitions, general requirements, requirements, test methods, inspection rules, signs, transportation and storage of urban heating prefabricated direct buried steam insulation pipes (hereinafter referred to as insulation pipes) and pipe fittings. This standard is applicable to the manufacture and inspection of direct buried steel external steam protection pipes and pipeline accessories with a working pressure of steam medium less than or equal to 2.5 MPa and a temperature less than or equal to 350 ��C. | CJ/T 246-2018: Preformed directly buried steam insulating pipes and fittings for urban heating---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.
Preformed directly buried steam insulating pipes and fittings for urban heating
ICS 91.140.10
P46
People's Republic of China urban construction industry standards
Replacing CJ/T 200-2004, CJ/T 246-2007
Town heating prefabrication direct buried steam
Insulation pipe and pipe fittings
Published on.2018-08-24
Implementation of.2019-04-01
Ministry of Housing and Urban-Rural Development
Content
Foreword III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 2
4 General requirements 2
5 Requirements 9
6 Test method 12
7 Inspection rules 14
8 Signs, transport and storage 16
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces CJ/T 200-2004 "Technical Conditions for Prefabricated Direct Buried Steam Insulation Pipes for Urban Heating" and CJ/T 246-2007
Technical conditions for heating prefabricated direct buried steam insulation pipe fittings. Compared with CJ/T 200-2004 and CJ/T 246-2007, except for editing
The main technical content changes outside the sexual modification are as follows.
---Modified the working pressure of the applicable pipeline in the scope;
--- Modified some terms and definitions;
--- Removed the contents of the fiberglass outer protective tube;
---Modified the requirements for the wall thickness of the working pipe;
---Modified the welding requirements for steel parts;
--- Modified the insulation performance requirements;
--- Revised the material requirements and test methods for each part.
This standard was proposed by the Institute of Standardization of the Ministry of Housing and Urban-Rural Development.
This standard is under the jurisdiction of the Urban Heating Standardization Technical Committee of the Ministry of Housing and Urban-Rural Development.
This standard was drafted. China Urban Construction Research Institute Co., Ltd., Zhejiang University Energy Engineering Design and Research Institute Co., Ltd., Beijing
Construction Engineering Quality Fourth Inspection Institute, Shanghai Kehua Thermal Pipe Co., Ltd., Dalian Kehua Thermal Pipe Co., Ltd., Beijing Haote Pipeline
Equipment Co., Ltd., Haotian Energy Saving Equipment Co., Ltd., Shanghai Xinhua Architectural Design Co., Ltd., Tianjin Pipeline Engineering Group Co., Ltd.
Division Insulation Pipe Factory, Jiangsu Hongxin Pipeline Design Co., Ltd., Ningbo Wanli Pipeline Co., Ltd.
The main drafters of this standard. Lu Shijian, Lu Jianchu, Zhang Xiaohong, Bai Dongjun, Chen Lei, Yang Qiu, Jia Lihua, Zheng Zhongsheng, Xiang Jun, Li Zhi,
Song Zhanggen, He Qilin, Wang Weiwei, Zhou You.
The previous versions of the standards replaced by this standard are.
---CJ/T 200-2004;
---CJ/T 246-2007.
Town heating prefabricated direct buried steam insulation pipe and pipeline accessories
1 Scope
This standard specifies the terms and definitions of urban heating prefabricated direct buried steam insulation pipes (hereinafter referred to as insulation pipes) and pipe fittings, generally
Requirements, requirements, test methods, inspection rules, marking, transportation and storage.
This standard is applicable to direct buried steel with a working pressure of steam medium less than or equal to 2.5 MPa and a temperature less than or equal to 350 °C.
Manufacturing and inspection of steam protection pipes and piping accessories.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only the dated version applies to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 985.1 Recommended groove for gas welding, electrode arc welding, gas shielded welding and high energy beam welding
GB/T 985.2 recommended groove for submerged arc welding
GB/T 3087 seamless steel pipe for low and medium pressure boilers
GB/T 3091 welded steel pipe for low pressure fluid transportation
GB/T 3198 aluminum and aluminum alloy foil
GB/T 8163 seamless steel pipe for conveying fluid
GB/T 8923.1-2011 - Determination of surface cleanliness of steels - Part 1 . Uncoated
Corrosion grade and treatment grade of the steel surface and the surface of the steel after the original coating is completely removed
GB/T 9711 oil and gas industrial pipeline transportation system steel pipe
Types and parameters of GB/T 12459 steel butt welded pipe fittings
GB/T 12777 metal bellows expansion joint general technical conditions
GB/T 13401 steel butt welded pipe fittings technical specification
GB/T 17393 Specification for Thermal Insulation Materials for Austenitic Stainless Steel
GB/T 17430 Evaluation method for maximum use temperature of thermal insulation materials
GB/T 28638-2012 Thermal insulation loss test and insulation effect evaluation method for thermal insulation structure of urban heating pipes
GB/T 29046 Urban heating prefabricated direct buried thermal insulation pipeline technical index detection method
GB/T 29047-2012 high-density polyethylene outer tube rigid polyurethane foam prefabricated direct buried insulation pipe and fittings
CJ J28 Code for construction and acceptance of urban heating pipe network engineering
CJ J/T 104 Technical Specifications for Directly Buried Steam Pipes for Urban Heating
JC/T 618 Chemical analysis method for soluble chloride, fluoride, silicate and sodium ions in thermal insulation materials
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 47013.4-2015 Non-destructive testing of pressure equipment - Part 4. Magnetic particle testing
SY/T 5037 submerged arc welded steel pipe for ordinary fluid conveying pipeline
SY/T 5257 Induction heating elbow for oil and gas transmission
ASTMC1371-04a Standard Test Method for Density of Materials Near Room Temperature Using Portable Emissivity Meters
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