Types of Threaded Earth Rods 

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1. Copperbond Threaded Earth Rods

• Low-carbon steel core with a solid copper outer layer, bonded by a hightemperature molecular process

• Combine high mechanical strength with excellent conductivity and corrosion resistance

• Ideal for general industrial, utility, and infrastructure projects in Saudi Arabia

• Available in diameters such as 1/2", 5/8", and 3/4" with UNC-2A thread sizes

 

2. Pure (Solid) Copper Threaded Earth Rods

• Made from high-conductivity hard-drawn copper

• Best suited for very corrosive soil conditions, such as coastal areas with high salt and moisture 

• Used in projects where maximum corrosion resistance is required

• Tested in accordance with UL 467 and IEC 62561-2 standards

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3. Galvanized Steel (GI) Threaded Earth Rods

• Steel rods with a galvanized coating for corrosion protection

• Cost-effective option for general earthing in less corrosive environments

• Commonly used in industrial and commercial installations where pure copper is not mandatory

 

Rod Dimensions & Thread Specifications

• Diameters: 12.7 mm (1/2"), 14.2 mm (9/16"), 16 mm (5/8"), 17.2 mm (3/4"), 19 mm, 25 mm (1")

• Lengths: 2,440 mm (2.44 m), 3,000 mm (3 m), 3,600 mm (3.6 m), with options for longer rods or multiple sections joined via couplings

• Thread sizes: 1/2", 9/16", 5/8", 3/4", 1" according to UNC-2A standards

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Selection depends on:

• Soil resistivity and type

• Required earth resistance (typically ≤ 1 ohm for many electrical installations)

• Project specifications (SEC, Aramco, IEC, etc.)

 

System Accessories

• Earth Rod Couplings – High-strength couplings to join multiple rods in series for deeper installation

• Earth Rod Tips – Pointed tips to improve ground penetration and protect the rod end

• Driving Heads & Driving Sleeves – Protect the rod during hammering and ensure thread integrity

• Ground Clamps – Mechanical clamps for connecting earthing conductors to earth rods