Aluminum Bracelet Anode with Square-End Half-Shell Design (Welded)
Our indium-activated aluminum bracelet anode is engineered for safeguarding submarine/offshore pipelines through cathodic protection. These anodes, designed as two half-shells, securely encase the pipe like a bracelet and are applied using thermit-welding techniques. Featuring square ends, our half-shell aluminum bracelet anodes are ideal for seamless integration with concrete coatings, ensuring effective protection.
Description
The aluminum bracelet anode, activated with indium, is engineered for safeguarding submarine and offshore pipelines through cathodic protection. These anodes, constructed in two halves, are designed to encircle the pipe like a bracelet and require thermit-welding for installation. Featuring a square end, our half-shell aluminum bracelet anodes are ideal for seamless integration with concrete coatings.
Quality Substrate Material
Crafted from high-purity alloys with low iron content, our bracelet anode adheres to the specifications outlined by 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
Our aluminum bracelet anode delivers consistent performance in seawater and electrolytes with chloride ions due to its maintained operating potential ranging from -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
Typically, the dimensions of the anodes are tailored to match the dimensions of the pipe they are designed to protect. Below are examples of standard bracelet anodes, and custom configurations can be accommodated upon request.
