GB12983-2004
Standard color sample of national flag
国旗颜色标准样品
GB 12983-2004 is a current mandatory Chinese national standard for Standard color sample of national flag. It appears in the Machinery compliance cluster with a testing methods focus and has an implementation date of Jul 1, 2004.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the production and evaluation of standard color samples for the Chinese national flag. It specifically covers materials such as chemical fiber fabrics (excluding artificial fibers), silk, and cotton. It is strictly designed for the creation of official color reference samples rather than general textile manufacturing. The standard is referenced alongside GB 12982 for comprehensive flag compliance.
Technical requirements
GB 12983-2004 establishes mandatory technical specifications for the physical dimensions and chromaticity of national flag color samples. The standard dictates specific size parameters, including a length of 300mm and a height of 200mm, with a permissible positive deviation of 2.5%. Manufacturers must strictly adhere to these dimensional tolerances for the main body of the sample, excluding the folded edges and flagpole sleeve. Chromaticity requirements are defined for red, yellow, and white (for the flagpole sleeve) across the three specified material types. The colorimetric data is calculated using the CIE standard illuminant D65 and the CIE 1964 supplementary standard colorimetric system. All color samples must meet a strict color difference tolerance to be considered compliant. Furthermore, the flag's surface pattern, plate-making positioning, appearance, and color fastness must conform to the related GB 12982 standard.
Testing methods
Dimensional verification is performed using measuring instruments with an accuracy of no less than 0.5%. Chromaticity measurements are conducted according to the methods specified in GB/T 3977, with results expressed using stimulus value Y10 and chromaticity coordinates x10 and y10. The color difference is calculated using the CIELAB color difference formula as defined in GB/T 3979. Samples failing to meet these chromaticity standards are prohibited from being used or distributed.
FAQs
What materials are regulated under GB 12983-2004 for national flag color samples?
It applies to standard color samples made from chemical fiber fabrics (excluding artificial fibers), silk, and cotton. It does not cover national flags made of other materials.
Are there any updates from the previous version of GB 12983-2004?
The 2004 version is a revision of GB 12983-1991, primarily updating the chromaticity tolerance limits for the standard color samples to ensure stricter color consistency.
How does GB 12983-2004 relate to other standards?
The standard references GB/T 3977 for color representation and GB/T 3979 for uniform color space and color difference formulas, aligning its methodology with CIE standards such as the CIE 1964 supplementary standard colorimetric system.
The summary above provides a high-level overview of GB 12983-2004. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 12983-2004 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Foundational
- CCS
- A26
- ICS
- 17.180.20
- Competent department
- Standardization Administration of China
- Technical committee
- National Technical Committee on Color of Standardization Administration of China
Relationships
Replaces:GB 12983-1991