Tension Clamp is a core connection hardware in high-voltage transmission lines and optical cable laying. It is used to fix the conductors and bear the full tension load to ensure the stability of the line in corners, terminals or large span scenarios. Handan Jinmai Fastener Manufacturing Co., Ltd. has been deeply involved in the field of power hardware for more than ten years. Relying on the advanced production line of its own factory, it focuses on the production of high-strength tension clamps that meet the national standard (GB/T 2315) and power grid technical specifications. The products cover all specifications of application scenarios such as ADSS/OPGW optical cables and steel-core aluminum stranded wires, and support in-depth customization of materials, sizes and anti-corrosion processes.
1. Excellent mechanical properties
Nominal breaking load 70kN-400kN (reference GB/T 2315 standard), passed the tensile strength test (GB/T 2317.1), can withstand extreme wind load and ice load;
Pre-twisted wire structure design disperses stress, avoids local wear of optical cable, and extends line life.
2. Long-term anti-corrosion guarantee
Adopting hot-dip galvanizing process (zinc layer thickness ≥ 86μm), in line with DL/T 284-2012 standard, verified by salt spray test, suitable for coastal, industrial and other high-corrosion environments;
Optional epoxy resin coating or stainless steel material to meet special environmental requirements.
3. Intelligent adaptation design
Supports precise matching of wire diameters of 10mm-50mm, and is suitable for mainstream cables such as OPGW, aluminum-clad steel wire, and aluminum alloy stranded wire;
Modular accessories (such as U-shaped hanging rings and extension rings) simplify installation and reduce construction costs.
Handan Jinmai Factory adopts full-process digital control and strict quality traceability system:
- Raw materials: high-strength aluminum alloy (6061-T6) or malleable cast iron (KT 33-8), spectral detection to ensure that the composition meets the standard;
- Forming process: friction press precision forging → CNC machine tool finishing → hot-dip galvanizing automated production line → salt spray test sampling;
- Quality control standards: implement ISO 9001 quality management system, and provide mechanical properties and corona loss test reports for each batch (GB/T 2317.2). Technical specifications
Applicable voltage ≤500kV (substation and transmission line)
Cable compatibility OPGW/ADSS optical cable, steel core aluminum stranded wire (LGJ), insulated wire
Corrosion resistance level C4 (long-term corrosion resistance, life ≥30 years)
Installation scenario Angle ≤25°, span ≤1000m
Certification standards GB/T 2315, DL/T 760.3, State Grid/Southern Grid bidding qualifications
As a qualified supplier of the State Grid, Handan Jinmai Fastener Manufacturing Co., Ltd. provides highly reliable and customized Tension Clamp solutions to global customers with more than ten years of experience in power fittings manufacturing. The products have been widely used in power transmission projects in more than 20 regions including Africa, Southeast Asia, and South America, and have won long-term cooperation with Huawei, China Power Construction and other companies with a reputation for zero quality accidents.
Get exclusive solutions:
- ✉ ️ Email: [email protected]
- 💬 WhatsApp/WeChat: +86 13831001495
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