U Bolt
Description
U-bolts—also known as U-bolt clamps or U-clamps—are U-shaped, fully threaded fasteners engineered to secure electrical poles, crossarms, and other line hardware on overhead power, pole-line, and concrete-line installations. Crafted for strength and versatility, U-bolts play a critical role in maintaining alignment and tension in transmission and distribution systems.
Key U-Bolt Variations for Power-Line Hardware
- Square U-Bolts: Featuring flat sides for firm clamping on flat surfaces like pole flanges and bracket plates.
- Round U-Bolts: Ideal for clamping round poles or conduit, offering a snug, uniform grip.
- U-Bolt Clamp Brackets: Integrated with mounting plates or saddles to distribute load and simplify installation of crossarms, insulators, or grounding straps.
- Middle-Bandage (Concrete) U-Bolts: Specially designed with reinforced bands for concrete poles, these U-bolts lock securely into pre-cast channels to anchor crossarm assemblies.
- Miniature U-Bolts: Compact U-bolts that connect ball sockets to tension clamps on high-voltage transmission lines, ensuring reliable electrical and mechanical coupling.
By selecting the right U-bolt style—whether you need heavy-duty square U-bolts for pole-line brackets or precision mini U-bolts for tension clamp assemblies—you optimize both installation efficiency and long-term stability of your power-line infrastructure.
Product Test Reports
All our products undergo rigorous mechanical, electrical, and environmental testing according to IEC standards. Below are examples of actual test reports from our laboratory and third-party certifications.
Our Factory
China Energy And Chemical Industry Co., Ltd — 16+ years OEM Transmission Insulator Manufacturer, IEC certified, supplying customers worldwide with polymer, porcelain, and glass insulators.





