JB/T 51202-1999
Axial Flow Pumps - Product Quality Grading (Internal Use)
轴流泵 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级指标 → 4 试验方法 → 5 检验规则 Foreword → 1 Scope → 2 Normative References → 3 Quality Grade Indicators → 4 Test Methods → 5 Inspection Rules
Scope
This standard specifies the quality grade indicators, test methods, and inspection rules for axial flow pump products. This standard applies to axial flow pumps.
本标准规定了轴流泵产品的质量等级指标、试验方法、检验规则。本标准适用于轴流泵。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies of axial flow pumps use this standard to evaluate product quality grades. They rely on the indicators and inspection rules to classify and accept products. This standard promotes quality improvement and market standardization by defining clear technical requirements for different grades.
轴流泵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指标和检验规则，对产品进行分等和验收。该标准通过明确不同等级的技术要求，促进了轴流泵产品质量的提升和市场的规范化。
AI Summary AI generated
This standard JB/T 51202-1999 specifies the quality grading requirements for axial flow pump products, applicable to axial flow pumps. It classifies products into three grades: qualified, first-class, and premium. Detailed technical indicators are provided for flow rate, head, efficiency, NPSH, noise, vibration, safety, reliability, static balance, hydrostatic strength, assembly quality, paint coating, and marking/packaging. The standard also outlines corresponding test methods and sampling inspection rules based on GB/T 2828, determining the product grade through item-by-item assessment.
本标准JB/T 51202-1999规定了轴流泵产品的质量分等要求，适用于轴流泵。标准将产品分为合格品、一等品和优等品三个等级，并详细规定了流量、扬程、效率、汽蚀余量、噪声、振动、安全、可靠性、静平衡、水压强度、装配质量、油漆涂层及标志包装等各项指标的具体要求。同时，标准给出了相应的试验方法和基于GB/T 2828的抽样检验规则，通过逐项考核确定产品等级。
Key Sentences extracted from text
本标准规定了轴流泵产品的质量等级指标、试验方法、检验规则。
按轴流泵产品的技术水平和质量水平，分为合格品、一等品和优等品。
轴流泵产品的平均首次故障前工作时间：合格品应不少于1000 h，一等品不少于2000 h，优等品不少于3000 h。
轴流泵产品的安全技术要求应符合GB 10395.8 的规定。
采用逐项考核，以表1 中各类不合格达到的最低等级为产品等级。
This standard specifies the quality grade indicators, test methods, and inspection rules for axial flow pump products.
According to the technical level and quality level of axial flow pump products, they are divided into qualified products, first-class products, and premium products.
The average working time before first failure of axial flow pump products: qualified products shall be not less than 1000 h, first-class products not less than 2000 h, and premium products not less than 3000 h.
The safety technical requirements of axial flow pump products shall comply with the provisions of GB 10395.8.
Adopt item-by-item assessment, and the product grade is the lowest grade reached by various types of nonconformities in Table 1.
Standard Timeline
Changes from replaced version:
- 取消了“泵轴轴承档精度和泵体轴承孔精度”两个考核项目
- 可靠性指标改为“平均首次故障前工作时间”
- 增加了“安全要求”考核项目
- 重新划分了不合格项目分类，并相应地调整了抽样方案
- Canceled two assessment items: 'pump shaft bearing journal accuracy' and 'pump body bearing bore accuracy'
- Changed the reliability indicator to 'average working time before first failure'
- Added the 'safety requirements' assessment item
- Reclassified nonconforming items and adjusted the sampling plan accordingly