GB/T 35842-2018 English PDF

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GB/T 35842-2018: Technical requirements for pre-insulated directly buried valve of urban heating
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35842-2018	439	Add to Cart	5 days	Technical requirements for pre-insulated directly buried valve of urban heating	Valid

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Basic data

Standard ID: GB/T 35842-2018 (GB/T35842-2018)
Description (Translated English): Technical requirements for pre-insulated directly buried valve of urban heating
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: P40
Classification of International Standard: 91.140.60
Word Count Estimation: 22,229
Date of Issue: 2018-02-06
Date of Implementation: 2019-01-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 35842-2018: Technical requirements for pre-insulated directly buried valve of 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.
Technical requirements for pre-insulated directly buried valve of urban heating ICS 91.140.60 P40 National Standards of People's Republic of China Technical Requirements for Preheated Directly Buried Thermal Insulation Valves for Urban Heating Published on.2018-02-06 2019-01-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Administration released Directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 General requirements 2 5 Request 3 5.1 Valve 3 5.2 Insulation valve 4 6 Test method 5 6.1 Valve 5 6.2 Insulation valve 6 7 Inspection Rules 7 7.1 Inspection Category 7 7.2 Factory Inspection 7 7.3 Type test 8 8 Identification, Transport and Storage 9 8.1 Identification 9 8.2 Transportation 9 8.3 Storage 9 Appendix A (Normative) Axial Force and Bending Time Table 10 Appendix B (Normative) Radial Moment Test Method 11 Reference 16

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the Ministry of Housing and Urban-Rural Development of the People's Republic of China. This standard is under the jurisdiction of the National Urban Heating Standardization Technical Committee (SAC/TC455). This standard was drafted by. Beijing Haote Nai Pipeline Equipment Co., Ltd., Beijing Thermal Group Co., Ltd., Shanghai Special Equipment Supervision and Inspection Technology Research Institute, Beijing Thermal Engineering Design Co., Ltd., Beijing Construction Engineering Quality Testing Institute, Beijing Wick Swei Valve Co., Ltd., Urumqi Thermal Power Corporation, China Zhongyuan International Engineering Corporation, Beijing Valve General Factory (Group) Co., Ltd., Tang Shan Xingbang Pipeline Engineering Equipment Co., Ltd., Dalian Yiduo Pipeline Co., Ltd., Hebei Handan Energy Investment Group Co., Ltd., Hebei Tongao Festival Energy Equipment Co., Ltd. The main drafters of this standard. Wang Xiaoguo, Gao Hongze, Zhang Shuchen, Bai Dongjun, Fu Minghai, Jia Lihua, Liu Ju, Liang Chen, He Hongsheng, Li Guopeng, Guo Yanjuan, Mu Jinhua, Hu Quanxi, Hao Zhizhong, Qiu Xiaoxia, Zheng Zhongsheng, Sun Yonglin, Ye Lianji, Feng Wenliang, Zhang Honglian, and Wang Zhiqiang. Technical Requirements for Preheated Directly Buried Thermal Insulation Valves for Urban Heating

1 Scope

This standard specifies the general requirements, requirements, test methods, inspection rules, identification, transportation and storage of preheated direct buried heat insulation valves for urban heating Save and wait. This standard applies to continuous operating temperature of the conveying medium is greater than or equal to 4 °C, less than or equal to 120 °C, occasional peak temperature is less than or equal In 140 °C, working pressure is less than or equal to 2.5MPa of the laying of the prefabricated insulation valve manufacturing and inspection.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 12224 steel valve general requirements GB/T 13927-2008 Industrial valve pressure test GB/T 29046 Test method for technical indexes of preheated direct buried thermal insulation pipes for urban heating GB/T 29047 High Density Polyethylene External Pipe Rigid Polyurethane Foam Prefabricated Buried Insulation Pipe and Fittings CJJ/T 81 Technical Regulations for Directly Buried Hot Water Pipes for Urban Heating JB/T 12006 welded steel ball valve

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Insulation valve valve assembly Made of high-density polyethylene outer protective tube (hereinafter referred to as outer protective tube), rigid polyurethane foam insulation layer (hereinafter referred to as insulation layer), steel welding Connect the valve, valve straight pipe segment components. 3.2 Valve straight tube valveextensionpipes In order to facilitate the valve insulation and installation, the steel pipe welded on both ends of the valve. 3.3 Valve welding port weldingendonvalve The port where the straight pipe section of the valve connects with the working steel pipe. 3.4 Switching torque breakawaythrust/breakawaytorque The torque required to open and close the valve at maximum differential pressure. 3.5 Bending moment bendingmoment The moment the valve generates when subjected to bending loads. ......

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