GB/T 39246-2020 English PDF

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GB/T 39246-2020: Prefabricated directly buried insulating fittings with seamless high density polyethylene casing pipe
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39246-2020	369	Add to Cart	4 days	Prefabricated directly buried insulating fittings with seamless high density polyethylene casing pipe	Valid

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Basic data

Standard ID: GB/T 39246-2020 (GB/T39246-2020)
Description (Translated English): Prefabricated directly buried insulating fittings with seamless high density polyethylene casing pipe
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: P46
Classification of International Standard: 91.140.10
Word Count Estimation: 20,296
Date of Issue: 2020-11-19
Date of Implementation: 2021-10-01
Quoted Standard: GB/T 8923.1-2011; GB/T 12459; GB/T 13401; GB/T 18475-2001; GB/T 29046; GB/T 29047; GB 50236-2011; CJJ/T 254; NB/T 47013.2-2015; NB/T 47013.3-2015; NB/T 47014; SY/T 5257
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration
Summary: This standard specifies the terms and definitions, product structure, requirements, test methods, inspection rules and signs, transportation and storage of high-density polyethylene seamless outer protective pipe prefabricated direct-buried thermal insulation pipe fittings. This standard is applicable to the manufacture and inspection of high-density polyethylene seamless outer protective pipe prefabricated direct-buried heat preservation pipe fittings with the conveying medium temperature (long-term operating temperature) not higher than 120�� and peak temperature not higher than 130��.

GB/T 39246-2020: Prefabricated directly buried insulating fittings with seamless high density polyethylene casing pipe

---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.
(High-density polyethylene seamless outer protective pipe prefabricated direct-buried thermal insulation pipe fittings) ICS 91.140.10 P46 National Standards of People's Republic of China High-density polyethylene seamless outer protective pipe Prefabricated direct buried insulation pipe fittings 2020-11-19 released 2021-10-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Table of contents

Preface Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 Product structure 2 5 Requirements 3 5.1 Steel pipe fittings 3 5.2 Outer protection pipe fittings 6 5.3 Insulation layer 9 5.4 Insulation pipe fittings 9 6 Test method 10 7 Inspection rules 11 7.1 Inspection classification 11 7.2 Factory inspection 12 7.3 Type inspection 13 8 Marking, transportation and storage 13 8.1 Sign 13 8.2 Transportation 13 8.3 Storage 13 Appendix A (normative appendix) T-shaped thermal insulation tee size 15

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). Drafting organizations of this standard. Hebei Huidong Pipeline Co., Ltd., Beijing Construction Engineering Quality Fourth Inspection Institute, China Municipal Engineering Hua North Design and Research Institute Co., Ltd., Haotian Energy-saving Equipment Co., Ltd., Tianjin Xudi Polyurethane Insulation Anticorrosion Equipment Co., Ltd., Tianjin Qianfeng Anticorrosive Insulation Engineering Co., Ltd., Beijing Haotenai Pipeline Equipment Co., Ltd., Tangshan Xingbang Pipeline Engineering Equipment Co., Ltd., Langfang Huayu Tianchuang Energy Equipment Co., Ltd., Harbin Langest Energy Saving Technology Co., Ltd., Tianjin Tiandilong Pipe Industry Co., Ltd., Sanjie Energy-saving New Materials Co., Ltd., Dalian Kehua Thermal Pipeline Co., Ltd., Tianjin Pipeline Engineering Group Co., Ltd. Insulation Pipe Factory, Tianjin Jinneng Pipe Industry Co., Ltd., Hebei Xinyi Thermal Power Equipment Co., Ltd., Dalian Yido Pipeline Co., Ltd., Hebei Junye Technology Co., Ltd. Division, Chengde Shengjinwei Insulation Material Co., Ltd., Hebei Giant Pipe Manufacturing Co., Ltd., Changchun Thermal (Group) Co., Ltd., Jilin Province Heat Group New Pipe Industry Co., Ltd. The main drafters of this standard. Wu Yuexing, Bai Dongjun, Yang Xuefei, Zhou Yuecong, Wang Hongjun, Yang Liangzhong, Zheng Zhongsheng, Zhang Di, Liu Yunjiang, Jia Lihua, Qiu Huawei, Duan Wenyu, Lai Zhencheng, Liu Xiuqing, Gao Jie, Yang Qiu, Yu Guixia, Xie Guobiao, Han Defu, Qi Xin, Wang Xiangwei, Zhang Peizhi, Pan Cunye, Li Min, Lu Yaqin. High-density polyethylene seamless outer protective pipe Prefabricated direct buried insulation pipe fittings

1 Scope

This standard specifies the terms and definitions, product structure, requirements, test methods of high-density polyethylene seamless outer protective pipe prefabricated direct-buried insulation pipe fittings Laws, inspection rules and signs, transportation and storage. This standard applies to high-density polyethylene with the temperature of the conveying medium (long-term operating temperature) not higher than 120℃, and the peak temperature not higher than 130℃ Manufacturing and inspection of prefabricated direct-buried thermal insulation pipe fittings for seamless outer protective pipes.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 8923.1-2011 Visual assessment of surface cleanliness of steel surface treatment before coating-Part 1.Uncoated The corrosion level and treatment level of the steel surface and the steel surface after the original coating has been completely removed GB/T 12459 Types and parameters of steel butt welding pipe fittings GB/T 13401 Technical Specification for Steel Butt Welding Fittings GB/T 18475-2001 Thermoplastic pressure pipes and fittings material classification and naming overall use (design) coefficient GB/T 29046 Testing method for technical indicators of prefabricated direct-buried thermal insulation pipes for urban heating GB/T 29047 High-density polyethylene outer protective pipe, rigid polyurethane foam plastic prefabricated direct buried insulation pipe and pipe fittings GB 50236-2011 Construction specification for welding engineering of field equipment and industrial pipelines CJJ/T 254 Technical Specification for Leakage Monitoring System of Directly Buried Hot Water Pipes for Urban Heating 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 47014 welding procedure qualification for pressure equipment SY/T 5257 Steel induction heating elbow for oil and gas transportation

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 High-density polyethylene seamless outer protective pipe Seamless outer protective elbow, seamless outer protective elbow, seamless outer protective T-shaped tee, seamless The general term for external protective reducer, etc. 3.2 Strengthen welding The butt weld of the T-shaped three-way polyethylene outer protection branch pipe is welded by using an electrofusion welding belt sleeve. 3.3 Resistance to environmental stress cracking The polyethylene sample is immersed in a surfactant solution at a specific temperature, and the ability to withstand a continuous static tensile load. ......

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