JB/T 53242-1999
Product Quality Grading for Steel Plate Gate Valves for Pipeline
管线用钢制平板闸阀 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 evaluation methods for steel plate gate valve products for pipelines. This standard applies to steel plate gate valve products for pipelines (referred to as plate valves) as specified in JB/T 5298.
本标准规定了管线用钢制平板闸阀产品的质量等级，试验与检验方法，抽样和评定方法。本标准适用于JB/T 5298 规定的管线用钢制平板闸阀产品（简称平板阀）。
Normative References
Keywords
Application Summary AI generated
Valve manufacturers and quality inspection departments use this standard to classify and test steel plate gate valves for pipelines. It helps determine whether products meet the grades of qualified, first-class, or superior, ensuring reliability and safety in pipeline systems. By standardizing test methods and evaluation rules, it raises the overall quality level of industry products.
阀门制造企业和质量检验部门使用本标准来对管线用钢制平板闸阀进行质量分级和检测。它帮助确定产品是否达到合格品、一等品或优等品等级，从而确保阀门在管道系统中的可靠性和安全性。该标准通过统一试验方法和评定规则，提升了行业产品的整体质量水平。
AI Summary AI generated
This standard JB/T 53242-1999 is a revision of JB/T 53242-94 with no major technical changes. It classifies steel plate gate valves for pipelines into three quality grades: qualified, first-class, and superior. It specifies requirements for shell test, seal test, front seal test, static pressure life test, and cleanliness. Test methods reference other standards, and sampling requires at least 3 units per type and size, with no resampling allowed. The standard applies to products specified in JB/T 5298, aiming to unify quality evaluation and improve valve reliability and consistency.
本标准JB/T 53242-1999是对JB/T 53242-94的修订，主要技术内容不变。标准将管线用钢制平板闸阀分为合格品、一等品和优等品三个质量等级，规定了壳体试验、密封试验、阀前密封试验、静压寿命试验和清洁度等考核项目的具体指标。试验方法引用相关标准，抽样规则要求每型号规格至少抽3台，且不允许再次抽样。该标准适用于JB/T 5298规定的产品，旨在统一质量评定，提升阀门产品的可靠性和一致性。
Key Sentences extracted from text
本标准规定了管线用钢制平板闸阀产品的质量等级，试验与检验方法，抽样和评定方法。
平板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。
液体密封试验、气体密封试验和阀前密封试验按JB/T 5298 的规定。
采取随机抽取经生产厂质检部门检查合格的库存的或供给用户未经使用过的平板阀。
合格品、一等品、优等品的检测结果应达到相应等级的规定。不允许再次抽样。
This standard specifies the quality grades, test and inspection methods, sampling and evaluation methods for steel plate gate valve products for pipelines.
Plate valve products are divided into three grades: qualified product, first-class product, and superior product, based on their quality level and use value.
Liquid seal test, gas seal test, and front seal test shall be carried out according to the provisions of JB/T 5298.
Random sampling shall be conducted from the inventory that has passed inspection by the manufacturer's quality inspection department or from unused plate valves supplied to users.
The test results of qualified product, first-class product, and superior product shall meet the requirements of the corresponding grade. Resampling is not allowed.
Standard Timeline
Changes from replaced version:
- 对原标准作了编辑性修改，主要技术内容没有变化。
- Editorial modifications were made to the original standard, with no changes to the main technical content.