Square Boards are core connectors in power transmission and distribution systems, designed specifically for high-voltage lines, fiber optic cable supports, and substation equipment. Handan Jinmai Fastener Manufacturing Co., Ltd. leverages its proven fastener manufacturing technology, utilizing high-strength alloy steel and hot-dip galvanizing to ensure they can withstand conductor tension and prevent displacement and loosening even in extreme environments. These products are available in custom sizes (e.g., apertures from M16 to M42), thicknesses, and surface treatments, adapting to various domestic and international tower installation standards.
1. Ultra-High Load Capacity
Static load ≥ 120kN, dynamic fatigue test passed 100,000 cycles (compliant with GB/T 2314).
2. Long-Term Corrosion Protection
Hot-dip galvanized coating thickness ≥ 86μm, rust-free after over 3000 hours of salt spray testing (achieving C5-M corrosion resistance).
3. Wide Compatibility
Compatible with a variety of cables, including OPGW/ADSS optical cables and steel-core aluminum stranded wire, and supports various fixing methods, including pre-twisted wire and bolts.
Handan Jinmai utilizes a fully in-house production model (). Key processes include:
1. Precision Forging
Forming using a 10,000-ton friction press, the internal grain size reaches over 8, eliminating the risk of cracks.
2. CNC Finishing
CNC lathes/wire-cut machining maintain a hole diameter tolerance of ±0.05mm, ensuring a tight fit.
3. Double Protection Treatment
First, a sherardizing treatment increases the base material's hardness, followed by a 450°C hot-dip galvanizing treatment to form a metallurgical bonding layer.
Material: Q345B high-strength alloy steel, stainless steel, and aluminum alloy
Thickness: 12mm, 8-25mm
Aperture: Φ18/Φ24/Φ30, M12-M48, customizable
Galvanized coating: ≥86μm, fluorocarbon spray-coated
Operating temperature: -40°C to +120°C, -60°C to +150°C
Handan Jinmai Fastener Manufacturing Co., Ltd. () is deeply engaged in the field of electrical hardware. Its square connecting plates, with their military-grade quality control, flexible customization capabilities, and full lifecycle maintenance services, have established them as a long-term supplier to companies such as State Grid and China Railway Electrification Bureau. These products are ISO 9001 certified and certified by the Power Industry Equipment Quality Testing Center, making them suitable for demanding applications such as high-speed rail, photovoltaic power plants, and cross-sea power transmission.
Customization and Contact Us
- 🔧 Customization: 3D drawing analysis, sample trial production, and small-batch flexible production are available.
- 📩 Email: [email protected]
- 📱 WhatsApp/WeChat: +86 13831001495
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