Tapered End Bolted Half-Shell Aluminum Bracelet Anode

Tapered End Bolted Half-Shell Aluminum Bracelet Anode with Indium Activation for Submarine/Offshore Pipeline Cathodic Protection



Our indium-activated aluminum bracelet anode is engineered for safeguarding submarine and offshore pipelines through cathodic protection measures. This half-shell bracelet anode comprises two semi-circular sections that are clamped around the pipeline. To ensure electrical continuity between the anode body and the pipe, a steel continuity bar or electrical cable is employed. Featuring tapered ends, our half-shell aluminum bracelet anodes facilitate smooth movements along stringers during pipeline installation.

Quality Substrate Material
Crafted from high-purity alloys with low iron content, our bracelet anode adheres to ISO, NACE, and DNV standards in its design and construction.

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 performance of this aluminum bracelet anode remains consistent in seawater and electrolytes with chloride ions due to its operational potential being maintained within the range of -1.05 to -1.10 volts compared to the saturated calomel electrode (SCE), ensuring stable functionality.

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
Anodes are typically manufactured to match the overall dimensions of the pipes they are intended to protect.