Copper-clad steel grounding materials are composite grounding products made by cladding high-purity copper onto a steel core. Merging the mechanical strength of steel with the outstanding electrical conductivity and corrosion resistance of copper, they have emerged as a mainstream option in grounding engineering thanks to their superior overall performance and cost efficiency, and are widely used in construction projects around the world.
These multi-functional composite materials deliver dependable grounding solutions for a wide range of industrial and commercial environments:
They are widely applied for protective grounding and lightning protection grounding in integrated substation grounding grids, high-voltage transmission towers, distribution transformers and ring main units. Capable of rapidly dissipating high-voltage fault currents and lightning currents, they adapt well to laying environments including wilderness, mountainous regions and plains.
They are commonly used for foundation grounding, lightning down conductors and roof lightning protection systems in high-rise buildings, industrial workshops, commercial complexes and residential communities. They can be directly embedded in building foundations and underground soil layers, fully complying with standard grounding construction specifications for civil and industrial buildings.
Photovoltaic power stations, wind farms and 5G communication base stations are mostly built in remote deserts, mountainous areas or coastal regions exposed to severe soil acid-base corrosion and salt spray erosion. Copper-clad steel grounding materials boast strong environmental corrosion resistance, maintaining stable low grounding resistance in long-term service and ensuring safe and stable operation of new energy and communication equipment.
In high-risk sites such as oil refineries, chemical plants, gas stations and coal mines that require anti-static grounding, equipment protection grounding and lightning protection grounding, these materials ensure uniform electric conduction without rust-caused disconnection risks. They effectively eliminate hidden dangers caused by static sparks and lightning strikes and satisfy explosion-proof safety standards.
Used in integrated grounding systems for high-speed railways, subways, urban municipal pipelines and tunnel projects, copper-clad steel grounding materials possess great mechanical toughness and fracture resistance. They adapt to complex geological construction conditions and have become the preferred material for rail transit grounding grids.
The high-purity copper outer layer endows the products with conductivity close to that of pure copper grounding products. They can quickly discharge lightning currents and short-circuit fault currents, steadily control grounding resistance, and fully meet the electrical performance requirements of various power and lightning protection grounding works.
The outer copper sheath isolates the inner steel core from soil oxidation, acid-base corrosion and coastal salt spray erosion to avoid rust and performance degradation. With an underground service life of over 30 years, they greatly outperform ordinary hot-dip galvanized steel grounding materials.
Built with high-strength steel cores, these materials show excellent tensile, compressive and bending properties. They are resistant to fracture and deformation during deep burial and soil compaction, perfectly suitable for construction in harsh and complex geological environments such as mountainous areas, frozen soil zones and rocky terrain.
Compared with pure copper grounding materials, copper-clad steel products greatly reduce raw material costs while retaining copper’s conductivity and anti-corrosion properties. Large-scale application in engineering can drastically reduce project investment and lower overall construction expenditure.
With good ductility, the materials can be freely cut and bent, and are compatible with exothermic welding and mechanical clamp connection methods. Featuring simple construction procedures and flexible wiring layout, they fit diverse grounding grid designs and greatly boost construction efficiency.
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