Bracelet Aluminum Sacrificial Anodes For Subsea Steel Pipeline DNV Approved
Bracelet Aluminum Sacrificial Anode For Subsea Steel Pipeline And Pile Protection GALVALUM III Standard
Aluminum anodes are used particularly within marine cathodic protection against corrosion in chlorinated environment. The Application fields that are used effectively are sea platforms, ship hulls, storage tanks inside, underwater pipes, piers, crude oil storage tanks with chlorine ionsin the inner surfaces of structures exposed to corrosion The chemical composition of the aluminum plate is the most important factor on anode performance. Aluminum anodes are available with different compositions. Aluminum is the most commonly used anode with indium added alloy . By adding indium passive layer on the anode surface is dissolving, the active indium means continuously provides the back surface to serve as the anode. PRO-TEK is able to manufacture and supply Al-In-Zn alloy anode in various sizes and shapes according to customer's needs,
Chemical Composition Analysis (%)
| Type | Zn | In | Cd | Sn | Mg | Si | Ti | Impurity ,less than | Al | ||
| Si | Fe | Cu | |||||||||
| Al-Zn-In-Cd A11 | 2.5-4.5 | 0.018-0.050 | 0.005-0.020 | - | - | -- | - | 0.10 | 0.15 | 0.01 | Balance |
| Al-Zn-In-Sn A12 | 2.2-5.2 | 0.020-0.045 | - | 0.018-0.035 | - | - | - | 0.10 | 0.15 | 0.01 | Balance |
| Al-Zn-In-Si A13 | 5.5-7.0 | 0.025-0.035 | - | - | - | 0.10-0.15 | - | 0.10 | 0.15 | 0.01 | Balance |
| Al-Zn-In-Sn-Mg A14 | 2.5-4.0 | 0.020-0.050 | - | 0.025-0.075 | 0.50-1.00 | - | - | 0.10 | 0.15 | 0.01 | Balance |
| Al-Zn-In-Mg-Ti A21 | 4.0-7.0 | 0.02-0.050 | - | - | 0.50-1.50 | - | 0.01-0.08 | 0.10 | 0.15 | 0.01 | Balance |
Electrochemical characteristics :
| Item | Material of anodes | Open-circuit Voltage (v) | Close-circuit Voltage (v) | Actual Capacity(Ah/kg) | Current efficiency (%) | Consumption rate ( kg.(A.a)* | Dissolve Performance |
| Electrochemical Performance | Type 1 | -1.18- -1.10 | -1.12- -1.05 | ≥2400 | ≥85 | ≤3.65 | The surface dissolve evenly & oxide drop easily |
| Type 2 | -1.18- -1.10 | -1.12- -1.05 | ≥2600 | ≥90 | ≤3.37 | ||
| *Reference electrode: Saturated calomel electrode Type 1: A11,A12,A13,A14 Type 2: A21 | |||||||
Aluminum galvanic anodes for piers and pilings are cast in one of two premium aluminum alloys, for optimal performance in any conditions. Anodes are manufactured in several standard sizes.
Core length comes standard depending on the size, and holes may be drilled for bolt-on applications at customer’s request.
In addition to these, we can cast anodes for piers, jetties, or any other piling and ballast to the exact specifications required. Please contact us for advice on optimizing an anode to suit your specific requirements.
vivian@hbnewmaterial.com
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.