JB/T 51203-1999
IB Type Single-stage Centrifugal Pump - Product Quality Grading (Internal Use)
IB 型单级离心泵 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 试验方法 → 5 检验规则 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test Methods → 5 Inspection Rules
Scope
This standard specifies the quality grade indicators, inspection test methods, and inspection rules for single-stage centrifugal pump products. This standard applies to IB type single-stage centrifugal pumps (hereinafter referred to as pumps).
本标准规定了单级离心泵产品的质量等级指标、检测试验方法和检验规则。 本标准适用于IB 型单级离心泵（以下简称泵）。
Normative References
Keywords
Application Summary AI generated
Manufacturers, quality inspection agencies, and users apply this standard to grade and accept IB type single-stage centrifugal pumps. It defines performance criteria for qualified, first-class, and superior products, enabling consistent evaluation and ensuring reliability. This standard matters because it establishes a systematic grading framework and inspection rules, driving quality improvement and fair competition in the industry.
该标准由泵制造企业、质量检验机构和用户使用，用于对IB型单级离心泵进行质量等级评定和验收。它通过明确合格品、一等品和优等品的性能指标，帮助各方统一评价依据，确保产品质量的可靠性和一致性。该标准的重要性在于它提供了系统的分等方法和检验规则，促进了行业内的质量提升和公平竞争。
AI Summary AI generated
This standard specifies quality grading requirements for IB type single-stage centrifugal pumps, covering three grades: qualified, first-class, and superior. Key technical indicators include head, flow rate, efficiency, NPSH, vibration, noise, safety, reliability, assembly appearance, hydrostatic test, and static balance. Test methods cover performance testing, safety inspection, and reliability testing. Inspection rules follow GB/T 2828 sampling plans, with nonconformities classified into A, B, and C categories. The standard provides a unified basis for quality evaluation, applicable to manufacturing and inspection processes.
本标准规定了IB型单级离心泵的质量分等要求，包括合格品、一等品和优等品三个等级。主要技术指标涵盖扬程、流量、效率、汽蚀余量、振动、噪声、安全要求、可靠性、装配外观、水压试验和静平衡等。试验方法涉及性能测试、安全检查和可靠性试验。检验规则采用GB/T 2828抽样方案，按A、B、C三类不合格进行判定。该标准为泵产品的质量评价提供了统一依据，适用于制造和检验环节。
Key Sentences extracted from text
本标准规定了单级离心泵产品的质量等级指标、检测试验方法和检验规则。
按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。
泵的额定点效率，合格品应符合JB/T 9799.1—1999 中表3 的规定，一等品的效率值应不小于合格品规定值加1%，优等品效率值应不小于合格品规定值加2%。
在规定的使用条件下，泵的平均首次故障前工作时间：合格品应不少于2500 h，一等品应不少于3000 h，优等品应不少于3500 h。
采用逐项考核，以表2 中各类不合格达到的最低等级定为产品等级。
This standard specifies the quality grade indicators, inspection test methods, and inspection rules for single-stage centrifugal pump products.
According to the technical level and quality level of pump products, they are divided into qualified products, first-class products, and superior products.
The rated point efficiency of the pump: qualified products shall comply with the provisions of Table 3 in JB/T 9799.1—1999, the efficiency value of first-class products shall not be less than the specified value for qualified products plus 1%, and the efficiency value of superior products shall not be less than the specified value for qualified products plus 2%.
Under specified operating conditions, the average time before first failure of the pump: qualified products shall be not less than 2500 h, first-class products shall be not less than 3000 h, and superior products shall be not less than 3500 h.
Adopt item-by-item assessment, and the lowest grade reached by each type of nonconformity in Table 2 shall be determined as the product grade.
Standard Timeline
Changes from replaced version:
- 删去了“第一次大修期”的有关内容
- 增加了“安全要求”一项内容
- 调整了不合格项目的类别划分
- Deleted the content related to 'first overhaul period'
- Added a 'safety requirements' item
- Adjusted the classification of nonconforming items