Aluminum Bracelet Anode with Tapered End and Welded Connection

Our Half Shell Aluminum Bracelet Anode is designed for cathodic protection in submarine and offshore pipelines. Featuring indium activation and a unique half-shell design, these anodes are installed using thermit-welding for durability. Their tapered ends allow for smooth movement during pipeline laying, ensuring effective protection throughout.



This aluminum bracelet anode, activated with indium, is custom-built for safeguarding submarine/offshore pipelines through cathodic protection methods. Consisting of two half-shells, these anodes are crafted to encircle the pipe like a bracelet and require thermit-welding for installation. Featuring tapered ends, our half-shell aluminum bracelet anodes are designed to facilitate smooth movement along stringers during the laying of pipelines.

Quality Substrate Material
Crafted from high-purity alloys with minimal iron content, our bracelet anode adheres to the quality standards set by ISO, NACE, and DNV.

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 demonstrates reliable performance in seawater and electrolytes with chloride ions due to its maintained operating potential ranging from -1.05 to -1.10 volts concerning 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 tailored to match those of the pipe. Custom configurations can be provided upon request.


Our company utilizes the ISO 9001:2015 quality management system alongside strict internal testing protocols to guarantee the longest possible lifespan and top-notch performance of our anodes. Each anode is assigned a distinct serial number to facilitate quality 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