PREMIUM SACRIFICIAL ANODES
Engineered for Superior Protection
Aluminum
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Zinc
Learn More→Our Anodes
Aluminum & Zinc.
Any Shape.
Any Specification.
Houston Anodes manufactures sacrificial anodes in aluminum and zinc alloys across six product families — from offshore platforms to vessel interiors. Every anode is custom-engineered, tested, and shipped with full traceability documentation.
MINIMUM ANODE WEIGHT
MAXIMUM ANODE WEIGHT
PRODUCT FAMILIES
CUSTOM SIZES ON REQUEST
Material Type 01
Aluminum Alloy Anodes
Cast in low-iron, high-purity aluminum alloys with traces of indium, zinc, and silicon. Delivers a current output capacity over three times that of zinc — making it the preferred choice for offshore and deepwater applications.
Aluminum Anode Photo
Alloy Types Available
Primary aluminum at 99.9% purity. Traces of indium (99.9% pure), zinc, and silicon. Never melted from scrap or recycled anodic material.
Chemical Composition Note
Exact chemical composition specified at time of order and verified against Material Test Reports (MTRs) before production release. Chemical analysis performed on every heat using Bruker–Quantron Magellan Q8 spectrometer.
Chemical Composition (% by weight)
| Element | Galvalum III | Galvalum III DCW |
|---|---|---|
| Iron (Fe) | 0.09 max | 0.06 max |
| Silicon (Si) | 0.08 – 0.12 | 0.08 – 0.12 |
| Copper (Cu) | 0.006 max | 0.003 max |
| Zinc (Zn) | 2.0 – 6.0 | 4.75 – 5.25 |
| Indium (In) | 0.01 – 0.02 | 0.016 – 0.025 |
| Cadmium (Cd) | 0.002 max | 0.002 max |
| Others (each) | 0.02 max | 0.02 max |
| Aluminum (Al) | Remainder | Remainder |
Electrochemical Properties
| Property | Galvalum III | Galvalum III DCW |
|---|---|---|
| Open Circuit Potential | (-) 1.15 V vs Cu/CuS04 sw. | (-) 1.15 V vs Cu/CuS04 sw. |
| Closed Circuit Potential | (-) 1.05 V vs Ag/AgCl sw, | (-) 1.05 V vs Ag/AgCl sw, |
| Seawater Capacity @25C | 1150 A-Hr/lb. (2530 A-Hr/Kg.) | 1150 A-Hr/lb. (2530 A-Hr/Kg.) |
| Seawater Capacity @5C | Variable | 1150 A-Hr/lb (2530 A-hr/Kg.) |
| Seabed Mud Capacity | 950 A-Hr/lb. (2090 A-hr/Kg.) | 950 A-Hr/lb. (2090 A-hr/Kg.) |
| Seabed Mud Capacity @ 5C | Variable | 950 A-Hr/lb. (2090 A-hr/Kg.) |
Typical Applications
Standards Compliance
Material Type 02
Zinc Alloy Anodes
Special High Grade Zinc at 99.99% purity. Preferred for deep, cold water and saline mud applications where temperature does not exceed 50°C (120°F). Operates at 95% nominal efficiency in seawater.
Zinc Anode Photo
Chemical Composition — MIL-A-18001-K (%)
| Element | Specification |
|---|---|
| Iron (Fe) | 0.005 max |
| Lead (Pb) | 0.006 max |
| Copper (Cu) | 0.005 max |
| Cadmium (Cd) | 0.025 – 0.07 |
| Aluminum (Al) | 0.1 – 0.5 |
| Others (each) | 0.10 max |
| Zinc (Zn) | Remainder |
Electrochemical Properties
Typical Applications
Industry Applications
Marine & Offshore
Ships, oil platforms, port facilities, and offshore structures requiring robust corrosion protection.
Pipelines
Underground and subsea pipelines transporting oil, gas, and water across long distances.
Storage Tanks
Water storage tanks, industrial vessels, and containment systems requiring internal protection.
Water Infrastructure
Municipal water systems, cooling towers, and heat exchangers in various industries.
Power Generation
Power plants, cooling systems, and electrical infrastructure requiring corrosion management.
Industrial Facilities
Chemical plants, refineries, and manufacturing facilities with critical infrastructure.
Six Product Families.
One Manufacturer.
All standard configurations are shown in our catalog. Houston Anodes also manufactures to exact customer specifications — any weight, any cross-section, any core configuration. Contact our engineering team to optimize an anode for your project.
Platform & Structural Anodes
Cast in low-iron, high-purity aluminum alloys. Manufactured in a wide variety of configurations for new construction or retrofitting. Custom trapezoidal cross-sections available.
Configurations
- –90° Core — Type A & B
- –45° Core — Type A & B
- –Straight Core — Type A & B
Weight Range
5 – 1,650 lbs
Core Pipe
2″ – 4″ SCH. 80
Key Applications
Offshore platforms, structural members, new construction & retrofit
Pipeline Bracelet Anodes
Manufactured in a wide variety of diameters using an extensive inventory of water-cooled molds. Available in square and tapered profiles with weld-on or bolt-on mounting.
Configurations
- –Square Weld-on
- –Square Bolt-on
- –Tapered Weld-on
- –Tapered Bolt-on
Diameter Range
1/2″ – 48″
Custom Sizes
Any weight & diameter
Key Applications
Subsea pipelines, Gulf of Mexico, offshore pipelines
Pier, Piling & Ballast Anodes
Core length standard per size; holes may be drilled for bolt-on applications. Suitable for piers, jetties, and any piling or ballast application.
Configurations
- –Trapezoidal Flush Core
- –Stand-off Core — Type A & B
- –Rod Core
- –Rod Stand-off Core
Weight Range
0.5 – 1,650 lbs (std)
Mounting
Weld-on · Bolt-on
Key Applications
Piers, jetties, pilings, ballast, harbor structures
Tank & Vessel Anodes
Heater Treater anodes available with Red/Blue caps and nuts on request. Houston Anodes can cast for any tank bottom or vessel interior to exact specifications.
Configurations
- –Heater Treater
- –Heater Treater Eyebolt
- –Bowling Ball
- –Drum
Weight Range
8.5 – 46 lbs (std)
Core Type
¾″ Rod
Key Applications
Tank bottoms, vessel interiors, heater treaters, pressure vessels
Hull Anodes
Manufactured in zinc alloy to MIL-A-18001-K specification. Operates at 95% nominal efficiency in seawater. Resists formation of hard, dense corrosion byproducts.
Configurations
- –Trapezoidal Hull
- –Trapezoidal Hull Cast-in Core
- –Hull Tapered
- –Tapered Trapezoidal
- –Teardrop
Weight Range
23 – 85 lbs (std)
Mil-Spec
MIL-A-18001-K
Key Applications
Ship hulls, ballast tanks, sea chests, marine vessels
Custom Engineered Anodes
Houston Anodes manufactures anodes of almost any shape and size. With an extensive inventory of water-cooled molds and in-house mold manufacturing capability, no geometry is out of reach.
Configurations
- –Clamp
- –Mat
- –Link
- –Any geometry on request
Weight
Any weight & size
Geometry
Provide drawing spec
Key Applications
Mission-critical & specialized infrastructure projects
Every Configuration at a Glance
Standard configurations are shown in our full product catalog. Every size and weight shown can also be manufactured in custom dimensions. Download the catalog or contact our team for full dimensional data.
| Product Family | Configurations | Weight / Size Range | Materials | Key Applications |
|---|---|---|---|---|
| Platform Anodes |
| 5 – 1,650 lbs | Al · Zn | Offshore platforms, structural members, new construction & retrofit |
| Bracelet Anodes |
| 1/2″ – 48″ diameter | Al · Zn | Subsea pipelines, Gulf of Mexico, offshore pipelines |
| Pier, Piling & Ballast |
| 0.5 – 1,650 lbs (standard) | Al · Zn | Piers, jetties, pilings, ballast, harbor structures |
| Tanks & Vessels |
| 8.5 – 46 lbs (standard) | Al · Zn | Tank bottoms, vessel interiors, heater treaters, pressure vessels |
| Hull Anodes |
| 23 – 85 lbs (standard) | Al · Zn | Ship hulls, ballast tanks, sea chests, marine vessels |
| Custom Anodes |
| Any weight & size | Al · Zn | Mission-critical & specialized infrastructure projects |
Our Standards
The Houston Advantage
COMPOSITION
EFFICIENCY
QUALITY
PERFORMANCE
Custom Engineering
If You Can Draw It,
We Can Cast It.
Houston Anodes can manufacture anodes of almost any shape and size required. With our extensive inventory of water-cooled molds — and the capability to manufacture our own molds in-house — we offer competitive prices on custom geometries that no standard catalog supplier can match.
Submit a Drawing or Spec Sheet
Provide detailed drawing, anode dimensions, desired weight, and chemical composition specification.
Specify Metal & Composition
Aluminum or zinc alloy. Any chemical composition. Our lab verifies conformance before production begins.
Fast Lead Times
2–4 week standard lead times. 650-ton monthly production capacity. In-house mold manufacturing eliminates supplier delays.
CUSTOM
Request Our Full Product Catalog
Complete dimensional data, SKU tables, and weight specifications for all six product families. Or contact our engineering team directly to discuss your project requirements.
