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GB/T 8175-2025: Guide for design of thermal insulation of equipments and pipes
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
GB/T 8175-2025	English	379	Add to Cart	4 days [Need to translate]	Guide for design of thermal insulation of equipments and pipes
GB/T 8175-2008	English	459	Add to Cart	4 days [Need to translate]	Guide for design of thermal insulation of equipment and pipes
GB/T 8175-1987	English	439	Add to Cart	4 days [Need to translate]	Guide for design of thermal insulation of equipments and pipes

GB/T 8175-2025: Guide for design of thermal insulation of equipments and pipes

---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.
ICS 27.010 CCSF04 National Standards of the People's Republic of China Replaces GB/T 8175-2008 Insulation Design Guidelines for Equipment and Piping Published on 2025-10-31 Implemented on May 1, 2026 State Administration for Market Regulation The State Administration for Standardization issued a statement.

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents". Drafting. This document replaces GB/T 8175-2008 "Guidelines for Insulation Design of Equipment and Piping". Compared with GB/T 8175-2008, except for structural adjustments... Aside from integration and editorial changes, the main changes are as follows. a) The scope has been changed (see Chapter 1, Chapter 1 of the.2008 edition); b) The basic principles have been changed (see Chapter 4, Chapter 3 of the.2008 edition); c) An insulation design category has been added (see Chapter 5); d) The material selection principles have been changed (see Chapter 6, Chapter 4 of the.2008 edition); e) Added basic formulas for adiabatic calculations (see 7.1); f) The insulation structure requirements have been changed (see Chapter 8, Chapter 7 of the.2008 edition); g) The main construction technical requirements for thermal insulation works have been changed (see Chapter 9, Chapter 8 of the.2008 edition); h) Additional testing and evaluation requirements for insulation performance have been added (see Chapter 10); i) The calculation method for the insulation layer thickness has been removed (see Appendices A, B, and C of the.2008 edition); j) A method for calculating the surface heat transfer coefficient has been added (see Appendix A). Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents. This document was proposed and is under the jurisdiction of the National Technical Committee on Standardization of Energy Infrastructure and Management (SAC/TC20). This document was drafted by. Building Materials Industry Technology Supervision and Research Center, Winsun Energy Conservation Group Co., Ltd., and China Chengda Engineering Co., Ltd. Limited Liability Company, Ansteel Group Engineering & Technology Co., Ltd., China Huanqiu Engineering Co., Ltd., Guangdong Huanqiu Guangye Engineering Co., Ltd., Shenzhou Energy Conservation Technology Co., Ltd. Technology Group Co., Ltd., Zhejiang Asker Building Materials Technology Co., Ltd., and China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Company, Hubei Jiafuda Energy Saving Technology Co., Ltd., China Construction Fourth Engineering Bureau Installation Engineering Co., Ltd., Donghua Engineering Technology Co., Ltd., Huamei Energy Saving Technology Group Co., Ltd., China Wuhuan Engineering Co., Ltd., Zhejiang Zhenshen Thermal Insulation Technology Co., Ltd., Hualu Engineering & Technology Co., Ltd. Limited Liability Company, Alessi Thermal Insulation Materials (Guangzhou) Co., Ltd., Beijing Petrochemical Engineering Co., Ltd., China Petrochemical Engineering Construction Co., Ltd. Beijing Dongfang Huazhi Petroleum Engineering Co., Ltd., China Tianchen Engineering Co., Ltd., Saiding Engineering Co., Ltd., Sinopec Shanghai Engineering Co., Ltd. Si, Dehe Technology Group Co., Ltd., Guangdong Elisen Technology Co., Ltd., China Chemical Engineering Second Construction Group Co., Ltd., CIMC Enrui Engineering Co., Ltd. Cheng Technology Co., Ltd., Nanjing Suxia Design Group Co., Ltd., Lockheed Fireproof Insulation Materials (Guangdong) Co., Ltd., Beijing Construction Engineering Quality Fourth Testing Institute Co., Ltd., Hebei Jinwei New Building Materials Co., Ltd., Shanghai Jianke Testing Co., Ltd., CNOOC Petrochemical Engineering Co., Ltd., Tianjin Huali Insulation Building Materials Co., Ltd., Jiangsu Hanxin Tiancheng New Materials Co., Ltd., Wuhan Yiye Steel Structure Co., Ltd. The company, Zhejiang Iwatani Technology Co., Ltd., Hainengfa Anticorrosion and Insulation Engineering Co., Ltd., Hubei Tuoshida New Material Technology Co., Ltd. Luoyang Zhida Petrochemical Engineering Co., Ltd., Zhejiang Engineering Design Co., Ltd., Zhongji Petrochemical Engineering Design Co., Ltd., Tianjin Jineng Pipeline Industry Co., Ltd., Ningbo Shengrun New Materials Co., Ltd., Dalian Guangmingyuan Energy-Saving Technology Research and Testing Center Co., Ltd., Anhui Honghui Technology Co., Ltd. Limited Company, Duken New Materials (Wuhan) Group Co., Ltd., Chongqing Chemical Engineering Design & Research Institute Co., Ltd., Zhejiang Urban Construction Gas-Powered Thermal Power Design China National Chemical Engineering Research Institute Co., Ltd., China National Chemical Engineering Research Institute Co., Ltd., Nanjing Jinling Petrochemical Engineering Design Co., Ltd., China National Chemical Engineering Research Institute Co., Ltd. Cheng Sixth Construction Co., Ltd., Jiangsu Huasang Thermal Insulation Technology Co., Ltd., Zhejiang Chuangxiang Energy Saving Technology Co., Ltd., and Gongyi Fanrui Yihui Composite Materials Co., Ltd. Materials Co., Ltd., Haolian Insulation Pipe Industry Co., Ltd., Changsha Zhongye Electromechanical Equipment Installation Co., Ltd., Beijing Saifulong Technology Development Co., Ltd. Company. Shandong Lushang Binglun Architectural Design Co., Ltd. The main drafters of this document are. Jin Fujin, Hao Yunan, Hu Xianlin, Wu Shouyong, Lü Bo, Xie Cunjian, Zhang Jun, Gao Jingsheng, Qiu Yiqi, and Ma Hongfeng. Gao Weimin, Zhang Yang, Ye Yaqin, Gao Heqing, Song Lingzhen, Cai Xiaofeng, Zhao Xuefeng, Zhang Chunhua, Luo Caiping, Guo Weijiang, Sha Jianhua, Peng Weihua, Yang Pingwei Fu Junming, Liu Shuhua, Bu Xianglin, Yang Jie, Sun Zezhan, He Wei, Gao Liping, Liao Zhaolong, Liu Yuping, Yu Zhixin, Guan Jinguo, Cheng Qinghua, Yuan Bing, Zhao Yaoguang, Ye Lin, Chen Xiaodong, Wang Guoxing, Er Yao, Bai Dongjun, Zhang Qiang, Gao Zhengwei, Gao Yongtao, Qian Ping, Jiang Fei, Lu Tao, Yang Lili, Lu Congming Wang Hongwei, Hong Shuquan, Li Wenhui, Chen Yong, Huang Yaohe, Xia Wei, Zhao Keren, Zhang Hong, Liang Xu, Li Junying, Li Yabin, Li Jiao, Lu Mingjie, Pan Hao, Tan Wei, Sun Hao, Jin Chengli, Ling Wei, Gao Kun, Gao Yangyang, Zhu Mengwei, Xie Tianpeng, Su Wenzheng, Qing Zhoujun, Chen Dong, Liu Dexin, Chen Xuejia, Li Qi Huang Xinyue, Miao Le, Cen Zhichao, Zhang Jicheng, Zhang Binghan, Li Chao, Bi Jianting, Liu Degang, Zhao Xingmin. The release history of this document and the document it replaces is as follows. ---First published in 1987 as GB/T 8175-1987; ---When it was first revised in.2008, it was incorporated into GB/T 15586-1995 "Design Guidelines for Cold Insulation of Equipment and Piping"; ---This is the second revision. Insulation Design Guidelines for Equipment and Piping

1 Scope

This document specifies the basic principles, classification, material selection principles, insulation calculations, and insulation structure of equipment and piping insulation design. The main construction technical requirements and testing and evaluation of insulation effects of structural and thermal insulation engineering. This document applies to the insulation design of equipment, pipes and their accessories with an external surface temperature of -196℃ to 850℃. This document does not apply to equipment and pipelines with special requirements in nuclear, aviation, aerospace, and other similar systems.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included. For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies. This document. GB/T 4272 General Technical Specifications for Thermal Insulation of Equipment and Piping GB/T 8174 Testing and evaluation of thermal insulation performance of equipment and piping GB/T 31013 Sound insulation of acoustic pipes, valves and flanges GB 50264 Code for Design of Thermal Insulation Engineering for Industrial Equipment and Piping

3 Terms and Definitions

The terms and definitions defined in GB/T 4272 and GB 50264 apply to this document.

4 Basic Principles

Insulation design aims to ensure safe and stable operation, meet process requirements, reduce heat (cold) loss, save energy, and improve economic efficiency. in principle. 5.Classification of Thermal Insulation Design Thermal insulation design should be classified according to GB/T 4272 into thermal insulation, cold insulation, personal protective insulation, fireproof insulation, noise reduction insulation, and dual-temperature insulation. Insulation. a) Insulation should be carried out in any of the following situations. 1) For applications requiring reduction of the external surface temperature of equipment, pipes, and their accessories, and minimizing heat loss; 2) The required temperature drop must meet the process's allowable requirements; 3) Where it is necessary to prevent or delay the freezing or solidification of the medium. b) Cold insulation should be carried out in any of the following situations. 1) It is necessary to reduce the loss of cold air; 2) It is necessary to prevent or reduce the temperature rise or vaporization of the medium; 3) It is necessary to prevent condensation on the outer surfaces of equipment, pipes and their accessories. ...