JB/T 53171-1999
Butterfly Valve - Product Quality Grading
蝶阀 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 抽样和评定方法 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test and Inspection Methods → 5 Sampling and Evaluation Methods
Scope
This standard specifies the quality grades, test and inspection methods, sampling and grade evaluation methods for butterfly valve products. This standard applies to butterfly valve products specified in GB/T 12238 and JB/T 8527.
本标准规定了蝶阀产品的质量等级、试验与检验方法、抽样和等级评定方法。本标准适用于GB/T 12238、JB/T 8527 规定的蝶阀产品。
Normative References
Keywords
Application Summary AI generated
Butterfly valve manufacturers and quality inspection agencies use this standard to evaluate the quality grade of butterfly valve products. They conduct tests, inspections, and sampling according to this standard to determine whether products meet the levels of qualified, first-class, or excellent product. This standard ensures consistent quality of butterfly valves and provides a unified evaluation basis for the market.
蝶阀制造商和质检机构使用本标准来评定蝶阀产品的质量等级。他们依据本标准进行试验、检验和抽样，以确定产品是否达到合格品、一等品或优等品。该标准确保了蝶阀产品的质量一致性，为市场提供了统一的评价依据。
AI Summary AI generated
This standard JB/T 53171-1999 replaces JB/T 53171-94 and specifies quality grades (qualified, first-class, excellent), test and inspection methods, sampling and grade evaluation for butterfly valve products. It applies to butterfly valves specified in GB/T 12238 and JB/T 8527. Key technical changes include adding assessment indicators for metal-sealed butterfly valves, air tightness leakage grade indicators, and specific sampling and evaluation methods. The standard references several related standards such as GB/T 13927 for pressure test methods.
本标准JB/T 53171-1999替代了JB/T 53171-94，规定了蝶阀产品的质量等级（合格品、一等品、优等品）、试验与检验方法、抽样和等级评定方法。适用于GB/T 12238和JB/T 8527规定的蝶阀。主要技术变化包括增加金属密封蝶阀的考核指标、气密性泄漏量等级指标，以及抽样和评定具体办法。标准引用了多项相关标准，如GB/T 13927压力试验方法。
Key Sentences extracted from text
本标准规定了蝶阀产品的质量等级、试验与检验方法、抽样和等级评定方法。
蝶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。
蝶阀的壳体试验、密封试验方法按GB/T 13927 的规定。
静压寿命试验按JB/T 8863 的规定进行。
合格品、一等品和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 butterfly valve products.
Butterfly valve products are divided into three grades: qualified product, first-class product, and excellent product, based on their quality level and use value.
The shell test and seal test methods for butterfly valves shall be in accordance with GB/T 13927.
The static pressure life test shall be carried out in accordance with JB/T 8863.
The test results for qualified product, first-class product, and excellent product shall meet the requirements of the corresponding quality grade, and re-sampling is not allowed.
Standard Timeline
Changes from replaced version:
- 范围增加了JB/T 8527 金属密封蝶阀。
- 增加了JB/T 8527 金属密封蝶阀的考核指标；表1 中增加气密性试验泄漏量的等级指标，并修改优等品泄漏量指标，增加注3。
- 增加抽样和等级评定的具体办法。
- Added JB/T 8527 metal-sealed butterfly valve to the scope.
- Added assessment indicators for JB/T 8527 metal-sealed butterfly valve; added grade indicators for air tightness test leakage in Table 1, modified leakage indicators for excellent product, and added Note 3.
- Added specific methods for sampling and grade evaluation.