描述

聚云锐紧固件专注汽车螺栓生产20多年，本系列高强度汽车紧固件包含放油螺栓、法兰螺栓、发动机螺栓等全品类产品，严格遵循GB/DIN标准生产。
✅ 材质工艺：采用40Cr/22A等高强度钢材，经调质热处理提升硬度与韧性，表面镀锌/达克罗处理，防锈耐腐蚀，适配发动机高温高湿环境。
✅ 性能优势：抗拉强度可达800MPa以上，抗疲劳性强，长期震动工况下仍能保持稳定预紧力，杜绝松动漏油风险。
✅ 适配场景：广泛应用于汽车油底壳放油、发动机缸体固定、底盘连接等场景，支持非标定制与批量供应，满足OEM/ODM需求。

Juyunrui Fasteners has specialized in automotive bolt production for 20 years. This series of high-strength automotive fasteners includes a full range of products such as oil drain bolts, flange bolts, engine bolts, produced in strict accordance with GB/DIN standards.
✅ Material & Craftsmanship: Made of high-strength steel like 40Cr/22A, with quenching and tempering heat treatment to enhance hardness and toughness. Surface galvanized/Dacromet treatment provides excellent rust and corrosion resistance, suitable for high-temperature and high-humidity engine environments.
✅ Performance Advantages: Tensile strength reaches over 800MPa with strong fatigue resistance, maintaining stable pre-tightening force under long-term vibration conditions to eliminate the risk of loosening and oil leakage.
✅ Application Scenarios: Widely used in automotive oil pan draining, engine block fixing, chassis connection and other scenarios. Supports non-standard customization and bulk supply to meet OEM/ODM requirements.