Drill bit

High-strength steel, specially treated surface, used for the tip of grounding rods, serving as the drilling body for ground penetration.

Product Introduction

1. The assembly consists of a grounding rod, drive head, connector, and drill bit. The grounding rod utilizes a continuous electrolytic plating process to coat copper ions onto the pre-treated steel core surface, forming a dense molecular bond between copper and steel. This results in an alloy product that combines the mechanical strength of steel with high electrical conductivity and strong corrosion resistance.
2. Surface quality: The copper layer is smooth and even, without significant defects or other harmful irregular edges.
3. Coating thickness: Coating thickness ≥0.254mm; Dimensions: Nominal diameter deviation ≤±0.10mm.
4. Tensile strength: The tensile strength of copper-clad steel is greater than 300MPa, with the fracture location being more than 25.4mm from the fixture.
5. Bending performance: After bending tests, the copper layer shows no cracks, fissures, pits, or other defects that could impair corrosion resistance.
6. Resistivity and conductivity: Resistivity ≤8.62×10⁻⁸ Ω·m, conductivity ≥20%.
7. Thermal stability coefficient: Thermal stability coefficient C ≥119.
8. Electrical-corrosion performance: After current-temperature cycle tests, freeze-thaw tests, neutral salt spray tests, and fault current impact tests, the final resistance increase is less than 50%. During intermediate stages, resistance increase in each test phase is less than 15%. After testing, the surface shows no cracks, fissures, pits, bubbles, or other defects that could impair corrosion resistance.
9. Grounding electrodes can be connected to the required length and driven up to 30 meters underground without being affected by climatic conditions (such as frost and drought) that could increase soil resistivity and grounding resistance.
10. Soil applicability: Suitable for any harsh soil environments, including mountains, rocky terrain, and highly acidic or alkaline conditions.
Product features: Dense bimetallic structure, excellent mechanical strength, high electrical conductivity, strong corrosion resistance, convenient installation without excavation, and adaptability to any harsh soil environment for lightning protection grounding applications.