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Classification codes and cartographic symbols for land pipeline features
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Basic data
| Standard ID | GB/T 45666-2025 (GB/T45666-2025) |
| Description (Translated English) | Classification codes and cartographic symbols for land pipeline features |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | A75 |
| Classification of International Standard | 07.040 |
| Word Count Estimation | 34,334 |
| Date of Issue | 2025-05-30 |
| Date of Implementation | 2025-09-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 45666-2025: Classification codes and cartographic symbols for land pipeline features
---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 07.040
CCSA75
National Standard of the People's Republic of China
Classification codes and symbol expressions of land pipeline elements
Released on 2025-05-30
2025-09-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
Table of contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 Classification and coding 1
4.1 Classification 1
4.2 Code Structure 1
4.3 Encoding method 2
4.4 Extension Rule 2
5 Symbols and expressions 2
5.1 General Provisions 2
5.2 Point feature symbols 2
5.3 Linear feature expression 3
5.4 Surface element expression 3
5.5 Note 3
5.6 Color value 3
Appendix A (Normative) Pipeline element classification and code 4
Appendix B (Normative) Pipeline Point Elements Legend 18
B.1 Legend of point elements of long-distance pipelines 18
B.2 Urban pipeline point element example 19
Appendix C (Normative) Pipeline Linear Element Legend 25
Appendix D (Informative) Examples of Pipeline Surface Elements 26
Appendix E (Normative) Color Values of Pipeline Point, Line and Area Element Symbols 28
References 29
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document is proposed by the Ministry of Natural Resources of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee for Geographic Information Standardization (SAC/TC230).
This document was drafted by. Surveying and Mapping Standardization Institute of the Ministry of Natural Resources, Interstellar Space (Tianjin) Technology Development Co., Ltd., Ministry of Natural Resources
The Sixth Topographic Survey Team (Underground Pipeline Survey and Engineering Institute of the Ministry of Natural Resources), Xiamen Jingtu Information Technology Co., Ltd., Beijing Surveying and Mapping Design Research
Institute, Guangzhou Urban Planning, Survey and Design Institute Co., Ltd., China Coal (Xi'an) Underground Space Technology Development Co., Ltd., Zhengyuan Geographic Information
Group Co., Ltd., Wuhan Institute of Surveying and Mapping, Qingdao Institute of Surveying and Mapping, Chongqing Institute of Surveying and Mapping Science and Technology, Changzhou Institute of Surveying and Mapping
Institute of Surveying, Mapping and Remote Sensing Technology, Ningbo Institute of Surveying, Mapping and Remote Sensing Technology, First Topographic Survey Team of the Ministry of Natural Resources, Shenzhen Municipal Design and Research Institute Co., Ltd.,
Sichuan Chuanjian Survey and Design Institute Co., Ltd., Guangdong Aike Environmental Technology Co., Ltd., Hefei Underground Pipeline Network Construction Management Office, Beijing
Municipal Academy of Science and Technology, Shenzhen Dahua Surveying Technology Co., Ltd., Urban and Rural Research Institute (Guangzhou) Co., Ltd., Shanghai Geotechnical Engineering Testing Center
Co., Ltd., HuaDa Tianyuan (Beijing) Technology Co., Ltd., and Kunming Institute of Surveying and Mapping.
The main drafters of this document are. Liu Xiaoqiang, Jiang Yifang, Wu Tong, Chen Yong, Qiao Zhiyong, Zhang Fenglu, Qiu Guangxin, Wang Xiaodong, Li Xuejun, Tan Renchun,
Li Li, Yang Benting, Pan Boming, Li Zhigang, Fu Huanian, Li Xin, Zhang Yuandong, Chen Fabo, Deng Nan, Li Shechun, Xu Xingquan, Luo Yongzhong, Luo Yunfeng,
Li Bin, Chen Min, Song Chao, Luo Shaohua, Liu Feng, Wenhua, Wu Wujiu, Hou Zhiqun, and He Jianglong.
Classification code and symbol expression of land pipeline elements
1 Scope
This document specifies the classification, coding and symbolic expression of land pipeline elements.
This document is applicable to the data collection, database construction, updating, sharing, exchange, information system construction and pipeline map production of long-distance and urban pipelines.
2 Normative references
This document has no normative references.
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
pipeline
Pipelines for transporting liquids, gases or powders, cables for transmitting electricity and information, as well as channels and corresponding ancillary facilities.
3.2
Pipeline section
A linear feature formed by the logical connection of two pipeline point features.
3.3
Pipe
Tubular equipment consisting of pipe sections, fittings and supports.
4 Classification and coding
4.1 Classification
4.1.1 Element types are divided into major categories, medium categories, minor categories and subcategories according to their subordinate relationships.
4.1.2 The major elements are divided into two categories, including. long-distance pipelines and urban pipelines.
4.1.3 Elements of the middle category Based on the major categories, long-distance pipelines are divided into five categories according to the transport medium, including. transmission lines, communication lines, oil pipelines,
Pipelines, gas pipelines, water pipelines; urban pipelines are divided into 8 categories, including. power pipelines, communication pipelines, water pipelines, drainage pipelines, gas pipelines
Pipelines, thermal pipelines, industrial pipelines, and integrated pipeline galleries.
4.1.4 The element subcategories and sub-categories are subdivided according to purpose and function based on the classification at the previous level.
4.1.5 The classification of elements shall be carried out in accordance with Appendix A.
4.2 Code Structure
The classification code adopts a 6-digit decimal code and is implemented according to Appendix A. The code structure is shown in Figure 1.
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