U-bolts are high-strength fasteners made of high-quality carbon steel or stainless steel. They are U-shaped and have threads on both ends. They can be quickly installed with nuts and washers. U-bolts manufactured by Handan Jinmai Fasteners are widely used in power hardware accessories, optical cable communication towers, building steel structures, pipeline systems, and heavy equipment fixation. They ensure project safety with excellent tensile strength and corrosion resistance.
1. Reliable materials
- High-strength materials such as Q235B carbon steel and 304/316 stainless steel are selected to meet the weather resistance requirements of different environments.
2. Precision technology
- Cold heading combined with CNC lathe finishing to ensure thread accuracy and bolt arc consistency.
3. Anti-corrosion treatment
- Provide surface treatments such as hot-dip galvanizing, Dacromet coating or electroplating nickel to extend outdoor service life.
4. Diversified customization
- Support non-standard sizes, special thread specifications and surface treatment process customization to meet global project needs.
5. International certification
- Comply with international standards such as ISO 898-1 and ASTM A307, and pass SGS quality inspection and certification.
Handan Jinmai adopts a full-process strict control production system:
1. Raw material screening: The steel composition is detected by a spectrometer to ensure that the material meets the standard.
2. Cold heading: The imported cold heading machine is used to form the U-shaped structure in one step to increase the metal density.
3. Thread processing: CNC machine tools precisely turn threads with an accuracy of 6g/6H.
4. Heat treatment: Tempering treatment is performed on high-grade bolts to increase the tensile strength to 8.8 and above.
5. Surface treatment: The automated galvanizing line achieves uniform coating, and the salt spray test exceeds 720 hours.
6. Quality inspection and packaging: 100% full-size inspection, anti-rust oil paper + wooden box packaging is used to ensure transportation safety.
Material grade: carbon steel (4.8/8.8/10.9), stainless steel (A2-70/A4-80)
Diameter range: M6 to M64, length 50mm to 2000mm (customization supported)
Thread standard: Metric, UNC/UNF
Surface treatment: hot-dip galvanizing (average thickness ≥50μm), Dacromet, epoxy resin spraying
Working temperature: -50℃ to +300℃ (selected according to material and coating)
Tensile strength: ≥400MPa (carbon steel), ≥700MPa (stainless steel)
Implementation standard: GB/T 32076, ISO 3269, ANSI B18.2.1
As one of the core products of Handan Jinmai Fastener Manufacturing Co., Ltd., U-bolts embody our 30 years of process accumulation and technological innovation. The company has a fully automated production line and a CNAS certified laboratory. The entire process from raw material procurement to finished product delivery is traceable. It has provided fastener solutions in the fields of power, communications, and infrastructure for more than 50 countries around the world.
Choose Jinmai, choose reliability
Professional team: provide technical selection guidance and installation solution design
Quick response: 72-hour delivery for conventional specifications, expedited production for urgent orders
Warranty commitment: 12-month quality assurance, lifelong technical consultation
If you need to obtain U-bolt CAD drawings or customized inquiries, please contact Jinmai sales engineer team, we will escort your project!
Handan Jinmai Fastener Manufacturing Co., Ltd.
Official website: https://www.jinmaipowerline.com/
Email: [email protected]
Contact: WhatsApp/wechat: +86 13831001495
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