JB/T 53305-1999
Large Vertical Single-stage Single-suction Centrifugal Pump - Product Quality Grading
大型立式单级单吸离心泵 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品的质量等级 → 4 试验与检验方法 → 5 抽样、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, and sampling and evaluation methods for large vertical single-stage single-suction centrifugal pump products. This standard applies to large vertical single-stage single-suction centrifugal pumps.
本标准规定了大型立式单级单吸离心泵产品的质量等级、试验与检验方法和抽样、评定方法。本标准适用于大型立式单级单吸离心泵。
Normative References
Keywords
Application Summary AI generated
Pump manufacturers and quality inspection agencies use this standard to grade the quality of large vertical single-stage single-suction centrifugal pumps. They apply the specified assessment items and indicators to test, inspect, and sample products, determining whether they are qualified, first-class, or superior. This standard is important for ensuring consistent quality and reliability of these pump products.
泵制造厂和质检机构使用本标准来评定大型立式单级单吸离心泵的质量等级。他们依据本标准中的考核项目和指标，对产品进行试验、检验和抽样，以确定产品属于合格品、一等品还是优等品。该标准对于确保此类泵产品的质量一致性和可靠性至关重要。
AI Summary AI generated
This standard JB/T 53305-1999 specifies quality grading requirements for large vertical single-stage single-suction centrifugal pumps, classifying products into three grades: qualified, first-class, and superior. It details assessment items such as flow rate, head, NPSH, efficiency, vibration, and noise, along with corresponding indicators and test methods, and defines sampling and evaluation rules. The standard provides a unified basis for quality control and grading of such pumps in manufacturing and use.
本标准JB/T 53305-1999规定了大型立式单级单吸离心泵的质量分等要求，将产品分为合格品、一等品和优等品三个等级。标准详细列出了流量、扬程、汽蚀余量、效率、振动、噪声等考核项目及其对应的指标和试验方法，并规定了抽样和评定规则。该标准适用于此类泵的质量控制和等级评定，为生产和使用提供了统一依据。
Key Sentences extracted from text
本标准规定了大型立式单级单吸离心泵产品的质量等级、试验与检验方法和抽样、评定方法。
产品根据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。
产品应符合JB/T 5294 和按订货合同的规定，其中主要考核项目及要求应符合表1 的规定，评定产品质量等级的考核项目、指标和要求应符合表2 的规定。
批量产品应首先进行单个产品的质量等级评定，判定单个产品的质量等级应符合该等级全部考核项目的要求，否则按达到的最低一项指标定等。
采取抽样检查方法时，可按JB/T 8687 规定的合格判定数Ac（或A1、A2）和不合格判定数Re（或R1、R2）评定该批产品达到某一等级（合格品、一等品或优等品）。
This standard specifies the quality grades, test and inspection methods, and sampling and evaluation methods for large vertical single-stage single-suction centrifugal pump products.
Products are divided into three grades: qualified product, first-class product, and superior product, based on quality level and use value.
Products shall comply with JB/T 5294 and the provisions of the order contract, where the main assessment items and requirements shall comply with the provisions of Table 1, and the assessment items, indicators, and requirements for evaluating product quality grades shall comply with the provisions of Table 2.
Batch products shall first undergo individual product quality grade evaluation; the quality grade of an individual product shall meet the requirements of all assessment items for that grade, otherwise it shall be graded according to the lowest indicator achieved.
When using the sampling inspection method, the batch product can be evaluated as reaching a certain grade (qualified, first-class, or superior) according to the acceptance number Ac (or A1, A2) and rejection number Re (or R1, R2) specified in JB/T 8687.
Standard Timeline
Changes from replaced version:
- 删除了'千小时效率平均降低值'考核项目
- 将产品标准中规定的流量、扬程、汽蚀余量、润滑油渗漏、清洁度、泵用材料、涂漆和外观及包装等主要考核项目及要求列入表1中
- Deleted the assessment item 'average efficiency decrease per thousand hours'
- Listed the main assessment items and requirements such as flow rate, head, NPSH, oil leakage, cleanliness, pump materials, painting, appearance, and packaging from the product standard into Table 1