JB/T 58551-1999
Welded Metal Bellows Mechanical Seal Product Quality Grading (Internal Use)
焊接金属波纹管机械密封 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 → 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 → 6 Grade Determination → Appendix A
Scope
This standard specifies the product quality grade indicators, test and inspection methods, sampling, and grade determination for welded metal bellows mechanical seals. This standard applies to metal bellows mechanical seal products.
本标准规定了焊接金属波纹管机械密封产品质量等级指标，试验与检验方法，抽样及等级判定。本标准适用于金属波纹管机械密封产品。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies use this standard to grade and test welded metal bellows mechanical seals. It sets key indicators like leakage, wear, and service life, helping users select appropriate product grades and ensure performance meets requirements. This standard is critical for ensuring reliable operation of mechanical seals in rotating equipment such as pumps.
机械密封制造商和质检机构使用本标准来对焊接金属波纹管机械密封产品进行质量分级和检验。它通过设定泄漏量、磨损量和使用期等关键指标，帮助用户选择合适等级的产品，并确保产品性能符合要求。该标准对于保证机械密封在泵等旋转设备中的可靠运行至关重要。
AI Summary AI generated
This standard specifies quality grading requirements for welded metal bellows mechanical seals, including three grades: qualified, first-class, and premium. Key indicators are average leakage, wear amount, and service life, with corresponding test methods, sampling plans, and grade determination rules. It applies to metal bellows mechanical seal products, ensuring quality through disassembly inspection and performance testing.
本标准规定了焊接金属波纹管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。关键考核指标为平均泄漏量、磨损量和使用期，并规定了相应的试验与检验方法、抽样方案及等级判定规则。标准适用于金属波纹管机械密封产品，通过解体检测和性能试验确保产品质量。
Key Sentences extracted from text
本标准规定了焊接金属波纹管机械密封产品质量等级指标，试验与检验方法，抽样及等级判定。
平均泄漏量、磨损量、使用期为关键项目，分别按表1、表2 和表3 的要求分等。
试验方法按GB/T 14211 的规定进行。
以关键项目和解体检测的项次合格率的最低等级判定等级。
抽样时产品样本数按表6 的规定，但在用户中抽样及突击性抽查时不受此限。
This standard specifies the product quality grade indicators, test and inspection methods, sampling, and grade determination for welded metal bellows mechanical seals.
Average leakage, wear amount, and service life are key items, graded according to the requirements of Table 1, Table 2, and Table 3 respectively.
The test method shall be carried out in accordance with GB/T 14211.
The grade is determined by the lowest grade of the key items and the item pass rate of the disassembly inspection.
The sample size for sampling shall be in accordance with Table 6, but this does not apply when sampling from users or conducting surprise inspections.
Standard Timeline
Changes from replaced version:
- 本标准是对JB/T 58551—92《焊接金属波纹管机械密封 产品质量分等》的修订
- 本标准自实施之日起代替JB/T 58551—92
- This standard is a revision of JB/T 58551-92 'Welded Metal Bellows Mechanical Seal Product Quality Grading'
- This standard replaces JB/T 58551-92 from the date of implementation