Half Shell Aluminum Bracelet Anode (Square End, Welded)
This indium-activated aluminium bracelet anode is specifically designed for the cathodic protection of submarine/offshore pipelines. Assembled as two half-shells, the anodes fit the pipe as a bracelet and shall be installed by thermit-welding. With square end, our half-shell aluminium bracelet anodes are suitable for flush fitting with concrete coating.
Description
Description
Quality Substrate Material
Casted in low-iron, high-purity alloys, our bracelet anode is designed as per the standard of ISO, NACE, 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
This aluminium bracelet anode provides a stable performance in seawater and electrolytes containing chloride ions as its operating potential is kept between -1.05 to -1.10 volts relative to 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) |
Parameters
The overall dimension of the anodes are usually manufactured to coincide with the overall dimension of the pipe. A range of standard bracelet anodes are illustrated below, custom-made configurations are available upon request.
| Item No. | Anode Dimensions | Anode Gap | Weight | |||
| Inner Diameter | Length | Thickness | N.W | G.W | ||
| JA-AL-BLW01 | 6.9” (175 mm) | 19.5” (495 mm) | 1.6” (40 mm) | 2.0” (50 mm) | 62.8 lbs (28.5 kg) | 66.1 lbs (30.0 kg) |
| JA-AL-BLW02 | 8.7” (220 mm) | 16.3” (415 mm) | 1.8” (45 mm) | 2.0” (50 mm) | 88.2 lbs (40.0 kg) | 93.7 lbs (42.5 kg) |
| JA-AL-BLW03 | 10.8” (275 mm) | 21.7” (550 mm) | 2.0” (50.8 mm) | 2.0” (50 mm) | 137.8 lbs (62.5 kg) | 149.9 lbs (68.0 kg) |
| JA-AL-BLW04 | 12.8” (325 mm) | 18.9” (480 mm) | 1.6” (40 mm) | 2.0” (50 mm) | 112.4 lbs (51.0 kg) | 121.3 lbs (55.0 kg) |
| JA-AL-BLW05 | 13.2” (336 mm) | 31.6” (802 mm) | 1.2” (30 mm) | 2.0” (50 mm) | 121.3 lbs (55.0 kg) | 125.7 lbs (57.0 kg) |
| JA-AL-BLW06 | 16.0” (406 mm) | 13.8” (350 mm) | 2.6” (65 mm) | 2.0” (50 mm) | 178.6 lbs (81.0 kg) | 187.4 lbs (85.0 kg) |
| JA-AL-BLW07 | 18.0” (457 mm) | 21.7” (550 mm) | 2.0” (51 mm) | 2.0” (50 mm) | 275.6 lbs (125 kg) | 282.2 lbs (128 kg) |
| JA-AL-BLW08 | 20.1” (510 mm) | 9.8” (250 mm) | 2.6” (65 mm) | 2.0” (50 mm) | 162.0 lbs (73.5 kg) | 177.5 lbs (80.5 kg) |
| JA-AL-BLW09 | 21.1” (536 mm) | 28.1” (714mm) | 1.5” (38 mm) | 2.0” (50 mm) | 230.4 lbs (104.5 kg) | 238.1 lbs (108 kg) |
| JA-AL-BLW10 | 24.0” (610 mm) | 16.1” (410 mm) | 2.0” (51 mm) | 2.0” (50 mm) | 233.7 lbs (106 kg) | 257.9 lbs (117 kg) |
| JA-AL-BLW11 | 27.3” (694 mm) | 12.6” (320 mm) | 1.6” (40 mm) | 2.0” (50 mm) | 120.2 lbs (54.5 kg) | 127.9 lbs (58.0 kg) |
| JA-AL-BLW12 | 27.5” (698 mm) | 16.0” (406 mm) | 2.7” (68 mm) | 3.0” (75 mm) | 294.3 lbs (133.5 kg) | 304.2 lbs (138 kg) |
Testing
We employ rigorous internal testing standards to ensure the optimum lifespan and performance of our Anodes. Each anode is labelled with a unique serial number for quality tracking. Third party testing is conducted by customer’s special request at extra charge.
| 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 |
Packaging Information
Remarks: Custom packing is available upon request.
We have strict packing protocols to guarantee safe delivery of our products. Clear shipping marks and documentation make delivery acceptance straightforward and simple.
Shipping Documents:
- Proforma invoice
- Packing list
- Testing reports (Chemical Composition, Electrochemical Properties Test, Certificate of Compliance)
- Certificate of origin (upon request)
