Custom Application Anodes for Specialized Cathodic Protection Requirements
RELI SLEEVE manufactures custom application anodes for specialized cathodic protection requirements where standard anode configurations may not be suitable. Anode geometry, dimensions, installation arrangement and material selection can be developed according to approved project requirements.
CUSTOM ENGINEERED ANODES
Product Introduction
Custom application anodes are sacrificial anodes developed for cathodic protection systems that require a specialized configuration. They are particularly useful for steel structures where available installation space, structural geometry, accessibility or existing protection arrangements require a purpose-designed anode.
RELI SLEEVE has the manufacturing and technical capability to design and manufacture different shapes of anodes according to client installation and application requirements. Depending on the approved design, configurations can include cylindrical, spherical and other application- specific geometries.
Custom anodes can also be considered for retrofit applications, replacement of existing anodes and specialized cathodic protection systems where the installation arrangement differs from conventional anode designs.
Key Features
Custom Geometry
Anodes can be manufactured in application- specific shapes based on structure geometry, installation conditions and approved drawings.
Cylindrical Configuration
Cylindrical anodes can be produced for specialized applications requiring a compact and defined geometry.
Spherical Configuration
Spherical anodes can be considered for applications where the project design requires a specialized three-dimensional configuration.
Project-Specific Dimensions
Overall dimensions can be developed according to approved engineering drawings and cathodic protection calculations.
Retrofit Applications
Custom configurations can be developed for suitable existing structures requiring replacement or additional protection.
Installation Flexibility
Mounting and connection arrangements can be developed according to the structure and approved installation requirements.
Material Options
Aluminium alloy or zinc alloy systems can be considered according to the cathodic protection design and operating environment.
Client-Specific Manufacturing
Manufacturing can be carried out against approved drawings, specifications and project requirements.
Technical Specification
| Product Type | Custom Application Sacrificial Anode |
|---|---|
| Protection Method | Sacrificial Cathodic Protection |
| Primary Application | Specialized Steel Structures and Marine Applications |
| Operating Environment | Seawater / Marine Environment |
| Available Materials | Aluminium Alloy / Zinc Alloy, as applicable to CP design |
| Available Shapes | Cylindrical, Spherical and Other Custom Configurations |
| Dimensions | As per Approved Engineering Drawing and CP Design |
| Mounting Arrangement | As per Structure and Approved Installation Design |
| Electrical Connection | As Required by Approved Cathodic Protection Design |
| Installation | Project-Specific Installation |
| Design Life | As per Cathodic Protection Design |
| Manufacturing Basis | Applicable Alloy Standard, Client Specification and Approved Drawing |
Grades & Standards
Chemical Composition
Alloy chemistry is selected according to the required anode material, applicable standard, cathodic protection design and approved customer specification.
Aluminium Anodes
| Element | Galvalum III (Eqv.) | DNV & ISO | Alanode |
|---|---|---|---|
| Zn | 2.0–6.5 | 2.5–5.75 | 0.50–5.00 |
| In | 0.01–0.02 | 0.016–0.04 | 0.005–0.05 |
| Si | 0.08–0.20 | 0.12 Max. | 0.10 Max. |
| Fe | 0.12 Max. | 0.09 Max. | 0.13 Max. |
| Cu | 0.006 Max. | 0.003 Max. | 0.01 Max. |
| Cd | 0.002 Max. | — | — |
| Others (Each) | 0.02 Max. | 0.02 Max. | 0.02 Max. |
| Others (Total) | 0.06 Max. | — | — |
| Al | Remainder | Remainder | Remainder |
Zinc Anodes
| Element | US Mill Spec | ASTM B148-II |
|---|---|---|
| Al | 0.10–0.50 | 0.005 Max. |
| Si | 0.125 Max. | — |
| Cd | 0.025–0.15 | 0.03 Max. |
| Fe | 0.005 Max. | 0.0014 Max. |
| Pb | 0.006 Max. | 0.003 Max. |
| Cu | 0.005 Max. | 0.002 Max. |
| Zn | Remainder | Remainder |
Final alloy chemistry and material selection should be confirmed against the approved cathodic protection design, project specification and applicable material standard.
Electrochemical Performance
Electrochemical characteristics depend on alloy composition, seawater conditions and the cathodic protection design. The following reference data applies to aluminium anodes operating in seawater at 23°C.
| Operating Environment | Seawater at 23°C |
|---|---|
| Open Circuit Potential | More negative than -1.1 V w.r.t. Ag/AgCl |
| Closed Circuit Potential | More negative than -1.05 V w.r.t. Ag/AgCl Reference Electrode |
| Anode Capacity | 2550–2750 A.hr/Kg |
Applications
- Specialized Marine Structures
- Offshore Steel Components
- Seawater Steel Structures
- Retrofit Cathodic Protection
- Replacement Anode Systems
- Custom Marine Installations
- Application-Specific CP Systems
- Project-Specific Steel Assets
Custom Anode Configuration
Shape
Cylindrical, spherical or other approved geometry can be developed according to application requirements.
Dimensions
Length, diameter, thickness and overall configuration can be manufactured according to approved drawings.
Mounting
Mounting and attachment arrangements are developed according to the structure and installation conditions.
CP Requirement
Anode configuration is aligned with the approved cathodic protection design and required service life.
Product Advantages
Application Flexibility
Custom configurations provide greater flexibility where conventional anode geometries are unsuitable.
Engineering-Based Design
Dimensions and installation arrangements can be developed around project-specific engineering requirements.
Retrofit Capability
Suitable custom configurations can be developed for selected existing structures requiring anode replacement.
Manufacturing Expertise
RELI SLEEVE combines technical capability and manufacturing experience for specialized sacrificial anode requirements.
About RELI SLEEVE
Engineered for Specialized Requirements
RELI SLEEVE, part of the Reliable Group, provides specialized engineering and manufacturing solutions for corrosion protection applications. The company has the technical and manufacturing capability to develop sacrificial anodes in different shapes and configurations according to client installation and application requirements.
Custom application anodes can be developed around approved project drawings, cathodic protection requirements, material specifications and installation conditions. This approach enables RELI SLEEVE to support specialized marine and seawater steel structures where standard anode designs may not be appropriate.
Frequently Asked Questions
What are custom application anodes? +
Custom application anodes are sacrificial anodes manufactured for specialized cathodic protection applications where standard anode configurations may not meet the structural or installation requirements.
Can RELI SLEEVE manufacture custom anode shapes? +
Yes. RELI SLEEVE has the manufacturing and technical capability to manufacture different anode shapes, including cylindrical and spherical configurations, according to approved requirements.
Can custom anodes be manufactured according to customer drawings? +
Yes. Custom anodes can be developed according to approved customer drawings, project specifications and cathodic protection design requirements.
Which materials can be used for custom anodes? +
Aluminium alloy and zinc alloy can be considered depending on the operating environment, cathodic protection requirements and applicable specification.
Are custom anodes suitable for retrofit applications? +
Custom configurations can be developed for suitable retrofit applications where existing structures require anode replacement or additional cathodic protection.
How are the dimensions of custom anodes determined? +
Dimensions are determined according to the approved cathodic protection design, structure requirements, installation conditions, required design life and applicable project specifications.
Where are custom application anodes used? +
They can be used for specialized marine and seawater steel structures, offshore components, retrofit systems and other project-specific cathodic protection applications.
Have a Special Anode Requirement?
Share your drawing, dimensions, structure details or cathodic protection requirements with RELI SLEEVE.