JB/T 58550-1999
Mechanical Seals for Acid-Resistant Pumps - Product Quality Grading (Internal Use)
耐酸泵用机械密封 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品质量等级指标 → 4 试验与检验方法 → 5 抽样方法 → 6 等级判定 → 附录A Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grade Indicators → 4 Test and Inspection Methods → 5 Sampling Methods → 6 Grade Determination → Annex A
Scope
This standard specifies the product quality grade indicators, test, inspection and sampling methods, and grade determination for mechanical seals used in acid-resistant pumps. This standard applies to mechanical seal products for acid-resistant pumps.
本标准规定了耐酸泵用机械密封产品质量等级指标，试验、检验与抽样方法，等级判定。本标准适用于耐酸泵用机械密封产品。
Normative References
Keywords
Application Summary AI generated
Manufacturers and users of acid-resistant pumps use this standard to evaluate the quality grade of mechanical seal products. It classifies products into qualified, first-class, and premium grades based on key indicators such as leakage, wear, and service life. This standard ensures reliability and consistency of mechanical seals, which is critical for equipment maintenance and selection in industries like chemical processing.
耐酸泵制造商和用户使用本标准来评定机械密封产品的质量等级。通过泄漏量、磨损量和使用期等关键指标，将产品分为合格品、一等品和优等品。该标准确保了耐酸泵用机械密封的可靠性和一致性，对化工等行业的设备维护和选型至关重要。
AI Summary AI generated
This standard specifies quality grading requirements for mechanical seals used in acid-resistant pumps, defining three grades: qualified, first-class, and premium. Key indicators include leakage, wear amount, and service life, with corresponding test methods (e.g., static pressure test, running test) and sampling rules (batch size at least 20 sets, random sampling). Product grade is determined by the lowest grade among key items and disassembly inspection pass rates. The standard references several related standards and provides a detailed disassembly inspection item table.
本标准规定了耐酸泵用机械密封产品的质量分等要求，包括合格品、一等品和优等品三个等级。关键考核指标为泄漏量、磨损量和使用期，并规定了相应的试验方法（如静压试验、运转试验）和抽样规则（批量不少于20套，随机抽取）。产品等级由关键项目和解体检测项次合格率的最低等级确定。标准还引用了多项相关标准，并提供了详细的解体检测项目表。
Key Sentences extracted from text
本标准规定了耐酸泵用机械密封产品质量等级指标，试验、检验与抽样方法，等级判定。
泄漏量、磨损量、使用期为关键项目，其分等分别按表1、表2和表3的要求，产品解体检测项目及分等按附录A（标准的附录）的规定。
以各关键项目和解体检测中的项次合格率的最低等级，判定产品等级。
静压试验、5 h运转试验和100 h运转试验按GB/T 14211的规定进行。
抽样时每一规格产品的批量应不少于20套。
This standard specifies the product quality grade indicators, test, inspection and sampling methods, and grade determination for mechanical seals used in acid-resistant pumps.
Leakage, wear amount, and service life are key items, and their grading shall be according to the requirements of Table 1, Table 2, and Table 3 respectively; product disassembly inspection items and grading shall be according to Annex A (normative annex).
The product grade shall be determined by the lowest grade among the key items and the item pass rate in the disassembly inspection.
Static pressure test, 5-hour running test, and 100-hour running test shall be conducted according to GB/T 14211.
When sampling, the batch size of each specification product shall be no less than 20 sets.
Standard Timeline
Changes from replaced version:
- 本标准是对JB/T 58550—92《耐酸泵用机械密封 产品质量分等》的修订。
- 本标准自实施之日起代替JB/T 58550—92。
- This standard is a revision of JB/T 58550-92 'Mechanical Seals for Acid-Resistant Pumps - Product Quality Grading'.
- This standard replaces JB/T 58550-92 from the date of implementation.