Square Bolt-On Aluminum Bracelet Anode with Half-Shell Design
Indium-activated half-shell aluminum bracelet anode for submarine/offshore pipeline cathodic protection, flush fitting with concrete.
Description
This aluminum bracelet anode, activated with indium, is engineered to provide cathodic protection for submarine or offshore pipelines. It features a half-shell design composed of two semi-circular parts that are secured around the pipeline. Electrical connection between the anode and the pipe is facilitated either through a steel continuity bar or an electrical cable. The square-ended configuration of our half-shell aluminum bracelet anodes ensures compatibility for seamless integration with concrete coatings.
Quality Substrate Material
Our bracelet anode is crafted from low-iron, high-purity alloys and conforms to ISO, NACE, and DNV standards.
| Element | GALVALUM III | DNV-RP-B401-2011 | GS EP COR 201 |
|---|---|---|---|
| Zinc (Zn) | 2.0% ~ 6.0% | 2.5% ~ 5.75% | 4.75% ~ 5.75% |
| Indium (In) | 0.01% ~ 0.02% | 0.015% ~ 0.04% | 0.015% ~ 0.02% |
| Silicon (Si) | 0.08% ~ 0.2% | 0.12% max. | 0.06% ~ 0.12% |
| Iron (Fe) | 0.13% max. | 0.09% max. | 0.12% max. |
| Copper (Cu) | 0.006% max. | 0.003% max. | 0.003% max. |
| Cadmium (Cd) | — | 0.002% max. | 0.002% max. |
| Total Impurities | 0.1% max. | 0.1% max. | 0.1% max. |
| Aluminum (Al) | Remainder | Remainder | Remainder |
Low Driving Voltage
The aluminum bracelet anode maintains stable performance in seawater and electrolytes with chloride ions due to its operating potential range of -1.05 to -1.10 volts relative to the saturated calomel electrode (SCE).
| Technical Measurement | Performance |
|---|---|
| Open Circuit Voltage (-V) | 1.10 min. |
| Closed Circuit Voltage (-V) | 1.05 min. |
| Current Capacity | 1135 A.h/lbs (2500 A.h/kg) |
| Current Efficiency | 90% min. |
| Consumption Rate | 7.6 lbs/A·y (3.4 kg/A·y) |
Customized Configurations
The dimensions of the anodes are typically designed to match the dimensions of the pipe. Custom configurations can be provided upon request.
Testing
Utilizing the ISO 9001:2015 quality management system and stringent internal testing protocols, we guarantee the optimal longevity and performance of our anodes. Every anode is assigned a distinct serial number for quality monitoring purposes.
| 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 |
