JB/T 58651.14-1999
Fastener Product Quality Grading - Bolt Connection Subassembly
紧固件产品质量分等 螺栓连接副
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 名词、术语 → 4 抽查项目、抽样方案及缺陷等级 → 5 分等标准 → 6 检验方法 Foreword → 1 Scope → 2 Normative References → 3 Terms and Definitions → 4 Inspection Items, Sampling Plan and Defect Grades → 5 Grading Standards → 6 Inspection Methods
Scope
This standard specifies the principles and methods for quality grading of high-strength bolt connection subassemblies for steel structures (hereinafter referred to as connection subassemblies) produced according to national standards and industry standards. It may also be used as a reference for quality grading of connection subassembly products produced according to other standards. This standard adopts three-level grading, namely superior product, first-class product, and qualified product. This standard applies to batches of connection subassembly products of a single diameter specification composed of bolts, nuts, and washers accepted according to the corresponding standards and GB/T 90.
本标准规定了按国家标准及行业标准生产的钢结构用高强度螺栓连接副（以下简称连接副）产品质量分等的原则和方法。按其他标准生产的连接副产品进行质量分等时亦可参照使用。本标准采用三级分等，即优等品、一等品、合格品。本标准适用于按相应标准及GB/T 90 接收了的螺栓、螺母和垫圈组成的单一直径规格连接副产品批。
Normative References
Keywords
Application Summary AI generated
This standard is used by fastener manufacturers and quality inspection agencies to grade the quality of high-strength bolt connection subassemblies for steel structures. By classifying products into three grades (superior, first-class, and qualified), it helps users select appropriate quality levels for engineering needs, ensuring the safety and reliability of steel structure connections.
该标准由紧固件生产企业和质量检验机构使用，用于对钢结构用高强度螺栓连接副进行质量等级评定。通过将产品分为优等品、一等品和合格品三个等级，帮助用户根据工程需求选择合适质量水平的产品，确保钢结构连接的安全性和可靠性。
AI Summary AI generated
This standard specifies the principles and methods for quality grading of high-strength bolt connection subassemblies for steel structures, applicable to products manufactured according to national and industry standards. It adopts three-level grading (superior, first-class, qualified) based on standard deviations of tightening axial force and torque coefficient. The standard also defines inspection items, sampling plans, defect grades, and inspection methods, providing a unified quality evaluation basis for the fastener industry.
本标准规定了钢结构用高强度螺栓连接副的质量分等原则和方法，适用于按国家标准和行业标准生产的产品。采用三级分等（优等品、一等品、合格品），主要依据紧固轴力和扭矩系数的标准偏差进行评定。标准还明确了抽查项目、抽样方案、缺陷等级及检验方法，为紧固件行业提供了统一的质量评价依据。
Key Sentences extracted from text
本标准规定了按国家标准及行业标准生产的钢结构用高强度螺栓连接副（以下简称连接副）产品质量分等的原则和方法。
本标准采用三级分等，即优等品、一等品、合格品。
本标准适用于按相应标准及GB/T 90 接收了的螺栓、螺母和垫圈组成的单一直径规格连接副产品批。
连接副产品的抽查项目、抽样方案及缺陷等级按表1 规定。
连接副产品的质量分等标准按表2 规定。
This standard specifies the principles and methods for quality grading of high-strength bolt connection subassemblies for steel structures (hereinafter referred to as connection subassemblies) produced according to national standards and industry standards.
This standard adopts three-level grading, namely superior product, first-class product, and qualified product.
This standard applies to batches of connection subassembly products of a single diameter specification composed of bolts, nuts, and washers accepted according to the corresponding standards and GB/T 90.
The inspection items, sampling plan, and defect grades for connection subassembly products are specified in Table 1.
The quality grading standards for connection subassembly products are specified in Table 2.
Standard Timeline
Changes from replaced version:
- 对原标准进行了编辑性的修改
- 主要技术内容没有变化
- Editorial modifications were made to the original standard
- The main technical content remained unchanged