GB/T 17670-2025 English PDF

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GB/T 17670-2025: Unified coding for natural stone
Status: Valid

GB/T 17670: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 17670-2025	1099	Add to Cart	7 days	Unified coding for natural stone	Valid
GB/T 17670-2008	759	Add to Cart	6 days	Unified catalogue for natural stone	Valid
GB/T 17670-1999	679	Add to Cart	5 days	Unified catologue for natural stone	Obsolete

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GB/T 11982.1   JC/T 908   JC/T 973   GB/T 23453   GB/T 23454   

Basic data

Standard ID: GB/T 17670-2025 (GB/T17670-2025)
Description (Translated English): Unified coding for natural stone
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q21
Classification of International Standard: 91.100.15
Word Count Estimation: 54,571
Date of Issue: 2025-04-25
Date of Implementation: 2025-11-01
Older Standard (superseded by this standard): GB/T 17670-2008
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 17670-2025: Unified coding for natural stone

---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.
National Standard of the People's Republic of China ICS 91.100.15CCS Q 21 Natural stone unified number 2024-04-25 Release 2025-11-01 Implementation State Administration for Market Regulation The National Standardization Administration issued Replace GB/T 17670-2008

Table of contents

Preface Ⅲ 1 Scope...1 2 Normative references ...1 3 Terms and Definitions 1 4 Classification and naming 1 4.1 Classification 1 4.2 Naming 1 5 Numbering principles 1 6 Name and number 2 Appendix A (Informative) Administrative division code table for provinces, autonomous regions, municipalities directly under the central government, and special administrative regions ...33 Appendix B (Informative) Names and Types of Imported Stones 35

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 is required. This document replaces GB/T 17670-2008 "Natural Stone Unified Numbering". Compared with GB/T 17670-2008, this document In addition to structural adjustments and editorial changes, the main technical changes are as follows. --The basis for classification of stone materials has been changed (see 4.1, 3.1 of the.2008 edition); -- Added the classification of "other stone materials" [see 4.1f)]; --Added new domestic stone varieties such as Beijing Sakura and Macheng Sesame White (see Table 1); --Added new foreign stone varieties such as Lincoln White and Vientiane Grey (see Appendix B). 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 was proposed by China Building Materials Federation. This document is under the jurisdiction of the National Technical Committee for Standardization of Stone Materials (SAC/TC 460). This document was drafted by. Sinoma Artificial Crystal Research Institute Co., Ltd., China Stone Association, Anhui Laoshiren Stone Industry Co., Ltd., Global Stone (Fujian) Co., Ltd., Shenzhen Youren Enterprise Management Consulting Co., Ltd., Guangdong Jinnuode Mining Co., Ltd., Fujian Huahui Stone Industry Co., Ltd., Macheng Public Inspection and Testing Center. The main drafters of this document are. Zhou Junxing, Chao Shoumei, Zi Peng, Lin Yuhua, Fang Zhihua, Hu Yuzhong, Zhu Qiumin, Wang Weixuan and Luo Wei. This document was first issued in.1999, revised for the first time in.2008, and this is the second revision. Natural stone unified number

1 Scope

This document specifies the classification and naming of natural stone, numbering principles, names and numbers. This document applies to the naming and numbering of granite, marble, limestone, sandstone, slate and other stones used for building decoration.

2 Normative references

The contents of the following documents constitute the essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies. in this document. GB/T 2260 Administrative division codes of the People's Republic of China GB/T 13890 Terminology of Natural Stone

3 Terms and definitions

The terms and definitions defined in GB/T 13890 apply to this document.

4 Classification and naming

4.1 Classification Natural stone is divided into the following categories according to its rock mineral composition and physical properties. a) Granite; b) Marble; c) limestone; d) sandstone; e) Slate stone; f) Other stones. 4.2 Naming 4.2.1 The Chinese name is determined based on the name of the place of origin, pattern color, stone type and other distinguishable features. 4.2.2 English names shall follow customary usage or foreign trade names.

5 Numbering principles

5.1 The unified number of natural stone consists of the stone type code (1 English letter), the stone origin code (2 digits) and the origin code of the stone. The code (2 digits or English letters) consists of 3 parts in sequence. 5.2 Stone type code. represents the type of stone, consisting of 1 English letter. a) Granite - G; b) marble (marble) - M; ......

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