JB/T 53072-1999
Product Quality Grading for Closed Spectacle Valve
封闭式眼镜阀 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品质量等级 → 4 试验与检验方法 → 5 抽样和等级评定方法 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test and Inspection Methods → 5 Sampling and Grade Evaluation Methods
Scope
This standard specifies the quality grades, test and inspection methods, sampling and grade evaluation methods for closed spectacle valve products. This standard applies to closed spectacle valve products as specified in JB/T 6901.
本标准规定了封闭式眼镜阀产品的质量等级、试验与检验方法、抽样和等级评定方法。 本标准适用于JB/T 6901 规定的封闭式眼镜阀产品。
Normative References
Keywords
Application Summary AI generated
Valve manufacturers and quality inspection departments use this standard to classify and evaluate the quality grades of closed spectacle valves. It ensures products meet requirements for qualified, first-class, or premium grades through key indicators such as shell test, seal test, and cavity cleanliness. This standard is important for guaranteeing the reliability and performance of closed spectacle valves.
阀门制造企业和质量检验部门使用该标准来对封闭式眼镜阀进行质量等级划分和评定。它通过规定壳体试验、密封试验和内腔清洁度等关键指标，确保产品达到合格品、一等品或优等品的要求。该标准对于保证封闭式眼镜阀的可靠性和使用性能具有重要意义。
AI Summary AI generated
This standard JB/T 53072-1999 replaces JB/T 53072-93, with the main technical change being a modification to the cavity cleanliness index. It classifies closed spectacle valve products into three grades: qualified, first-class, and premium, specifying requirements for shell test, seal test, and cavity cleanliness. Test methods reference JB/T 6901 and JB/T 7748, and grade evaluation uses sampling inspection, randomly selecting 3 samples from stock or users without re-sampling allowed.
本标准JB/T 53072-1999替代了JB/T 53072-93，主要修改了内腔清洁度指标。标准将封闭式眼镜阀产品分为合格品、一等品和优等品三个等级，规定了壳体试验、密封试验和内腔清洁度的具体考核要求。试验方法引用JB/T 6901和JB/T 7748，等级评定采用抽样检验方式，从库存或用户处随机抽取3台样品进行检测，不允许复检。
Key Sentences extracted from text
本标准规定了封闭式眼镜阀产品的质量等级、试验与检验方法、抽样和等级评定方法。
封闭式眼镜阀产品根据其质量水平和使用价值分为合格品、一等品和优等品三个等级。
封闭式眼镜阀产品除符合JB/T 6901 规定外，各等级的考核项目和指标要求还应符合表1 规定。
封闭式眼镜阀的壳体试验、密封试验按JB/T 6901—1993 中附录A的规定进行。
合格品、一等品、优等品的检测结果应达到相应质量等级的规定，不允许再次抽样。
This standard specifies the quality grades, test and inspection methods, sampling and grade evaluation methods for closed spectacle valve products.
Closed spectacle valve products are divided into three grades: qualified product, first-class product, and premium product, based on their quality level and use value.
In addition to complying with JB/T 6901, the assessment items and indicator requirements for each grade shall also comply with the provisions of Table 1.
The shell test and seal test of closed spectacle valves shall be conducted in accordance with Appendix A of JB/T 6901-1993.
The test results for qualified product, first-class product, and premium product shall meet the corresponding quality grade requirements, and re-sampling is not allowed.
Standard Timeline
Changes from replaced version:
- 对内腔清洁度指标进行了修改
- Modified the cavity cleanliness index