JB/T 53303-1999
Single Screw Pump - Product Quality Grading (Internal Use)
单螺杆泵 产品质量分等（内部使用）
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 → 附录A 用户使用报告 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test and Inspection Methods → 5 Sampling and Evaluation Methods → Appendix A User Usage Report
Scope
This standard specifies the quality grades, test and inspection methods, and sampling and evaluation methods for single screw pump products. This standard applies to single screw pumps.
本标准规定了单螺杆泵产品的质量等级、试验与检验方法和抽样、评定方法。本标准适用于单螺杆泵。
Normative References
Keywords
Application Summary AI generated
This standard is used by pump manufacturers, quality inspection agencies, and users to evaluate and accept single screw pump products based on quality grades. It ensures products meet defined performance criteria, promoting consistency and reliability in the industry.
本标准由泵制造企业、质量检验机构和用户使用，用于对单螺杆泵产品进行质量等级评定和验收。它通过规定明确的考核项目和指标，确保产品达到合格、一等或优等水平，从而提升行业整体质量水平。
AI Summary AI generated
This standard JB/T 53303-1999 specifies the quality grading, test and inspection methods, and sampling and evaluation rules for single screw pump products. Products are classified into three grades: qualified, first-class, and premium, based on quality level. Key assessment items include pressure, flow rate, NPSH, noise, oil leakage, cleanliness, assembly, materials, painting, appearance, and packaging, with corresponding test methods. The standard also defines sampling and evaluation procedures for batch products to ensure consistent and reliable quality.
本标准JB/T 53303-1999规定了单螺杆泵产品的质量等级划分、试验检验方法及抽样评定规则。产品按质量水平分为合格品、一等品和优等品三个等级，主要考核项目包括压力、流量、汽蚀余量、噪声、润滑油渗漏、清洁度、装配、材料、涂漆外观和包装等，并规定了相应的试验方法。标准还明确了批量产品的抽样和评定程序，以确保产品质量的一致性和可靠性。
Key Sentences extracted from text
本标准规定了单螺杆泵产品的质量等级、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 8644 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 single screw pump products.
Products are divided into three grades: qualified product, first-class product, and premium product based on quality level and use value.
Products shall comply with the provisions of JB/T 8644, 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.
For batch products, the quality grade of individual products shall first be evaluated, and 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 premium) 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”及“轴功率”考核项目
- 将“压力、流量、汽蚀余量、噪声、润滑油渗漏、清洁度、装配、泵用材料、涂漆和外观及包装”等主要考核项目及要求从表2中移出列入表1中
- Deleted the assessment items 'average efficiency reduction per thousand hours' and 'shaft power'
- Moved the main assessment items and requirements such as 'pressure, flow rate, NPSH, noise, oil leakage, cleanliness, assembly, pump materials, painting, appearance, and packaging' from Table 2 to Table 1