JB/T 54272-1999
Product Quality Grading for Measuring Tools and Instruments - Common Normal Micrometer (Internal Use)
量具量仪产品质量分等 公法线千分尺（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 合格品 → 4 一等品 → 5 优等品 → 6 等级评定 Foreword → 1 Scope → 2 Normative References → 3 Qualified Product → 4 First-Class Product → 5 Premium Product → 6 Grade Evaluation
Scope
This standard specifies the quality indicators for qualified products, first-class products, and premium products of common normal micrometers (hereinafter referred to as micrometers). This standard is applicable to the evaluation of quality grades for micrometers produced in batches.
本标准规定了公法线千分尺（以下简称千分尺）的合格品、一等品和优等品的各项质量指标。本标准适用于成批生产的千分尺质量等级的评定。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies of common normal micrometers use this standard to assess product quality grades. They rely on the indicators for qualified, first-class, and premium products to conduct factory inspections and classify grades. This standard ensures consistent quality of micrometers and provides a unified evaluation basis for the industry.
公法线千分尺的制造商和质检机构使用本标准来评定产品的质量等级。他们依据本标准中的合格品、一等品和优等品指标进行出厂检验和等级分类。本标准确保了公法线千分尺的质量一致性，为行业提供了统一的评价依据。
AI Summary AI generated
This standard JB/T 54272-1999 specifies quality indicators for qualified, first-class, and premium common normal micrometers, including requirements for indication error, appearance, interaction, hardness, surface roughness, and measuring force. Qualified products must meet GB/T 1217, while first-class and premium products further compress indication errors and add life tests. The standard applies to batch production quality grading and references the JB/T 54247 series for general rules and sampling procedures.
本标准JB/T 54272-1999规定了公法线千分尺的合格品、一等品和优等品的质量指标，包括示值误差、外观、相互作用、硬度、表面粗糙度、测力等要求。合格品需满足GB/T 1217，一等品和优等品进一步压缩示值误差并增加寿命试验等要求。标准适用于成批生产的质量等级评定，并引用JB/T 54247系列标准作为通则和抽样细则。
Key Sentences extracted from text
本标准规定了公法线千分尺（以下简称千分尺）的合格品、一等品和优等品的各项质量指标。
合格品必须达到GB/T 1217 规定的各项要求，按照JB/T 54247.1 的规定，其不合格项分为：
将千分尺合格品的示值误差压缩15%。
将千分尺合格品的示值误差压缩25%。
千分尺产品的等级评定按照JB/T 54247.2 的规定进行。
This standard specifies the quality indicators for qualified products, first-class products, and premium products of common normal micrometers (hereinafter referred to as micrometers).
Qualified products must meet all requirements specified in GB/T 1217, and according to JB/T 54247.1, their nonconforming items are classified as:
Compress the indication error of qualified micrometers by 15%.
Compress the indication error of qualified micrometers by 25%.
The grade evaluation of micrometer products shall be carried out according to JB/T 54247.2.
Standard Timeline
Changes from replaced version:
- 本标准与JB/T 54272—94 的技术内容一致，仅按有关规定重新进行了编辑。
- The technical content of this standard is consistent with JB/T 54272-94, only re-edited according to relevant regulations.