Grounding Rod Zinc Anode
Zinc rod: earthing cell with low resistivity backfill, dual unit packaging for structure and earthing device.
Description
Known as an earthing cell, the zinc rod is often supplied in a cotton bag containing low-resistivity backfill. Typically, two zinc anode units are packed together — one connects to the protected structure, and the other links to an earthing device.
Quality Substrate Material
Crafted from special high-grade (SHG) zinc ingots boasting 99.995% purity, our zinc anode adheres to ASTM-B418 standards for Type I and Type II alloys. The elevated purity level enhances resistance against passive films, with Type I ideal for seawater or brackish water, and Type II suited for underground and freshwater use.
| Element | ASTM – B418 Type I | ASTM – B418 Type II |
| Aluminum (Al) | 0.1~0.5% | 0.005% max. |
| Lead (Pb) | 0.006% max. | 0.003% max. |
| Iron (Fe) | 0.005% max. | 0.0014% max. |
| Copper (Cu) | 0.005% max. | 0.002% max. |
| Cadmium (Cd) | 0.025% ~ 0.07% | 0.003% max. |
| Total Impurities | 0.1% max. | 0.1% max. |
| Zinc (Zn) | Remainder | Remainder |
High Current Output
Our zinc earthing rod anode ensures uniform current density to the cathode. Its automatic current regulation prevents or amplifies stray currents. Achieving over 90% current efficiency, it complies with top industry norms.
| Technical Measurement | ASTM – B418 Type I | ASTM – B418 Type II |
| Open Circuit Potential (-V) | 1.05 min. | 1.10 min. |
| Close Circuit Potential (-V) | 1.00 min. | 1.05 min. |
| Current Capacity | 354A.h/lbs (780A.h/kg) | 335A.h/lbs (740A.h/kg) |
| Current Efficiency | 95% | 90% |
Note: The recorded open/close circuit potential is in relation to a Saturated Calomel Reference Electrode (SCE).
Testing
Our anodes are manufactured under the ISO 9001:2015 quality management system, adhering to strict internal testing protocols to guarantee superior longevity and performance. Every anode is tagged with a distinct serial number to facilitate quality monitoring and tracking.
| Testing Details | Chemical Composition | Electrochemical Performance | Physical Properties |
|---|---|---|---|
| Testing Standard | DNV-RP-B401 | NACE TM0190 | Foundry ITP |
| Testing Content | Chemical Analysis | Circuit Potential / Current Capacity / Current Efficiency / Electrical Resistance | Dimension & Weight / Surface Finish / Steel Insert |
| Equipments | Optical Emission Spectrometer OBLF QSN 750 | Electrochemical Analyzer EPI 200 | Calibrated Digital Measuring Devices |
