MMO Disc Plate Anode
Place of Origin: Shaanxi, China
Terms of payment: T/T
MOQ: 1 piece (sample available)
Size: customized
Shape: plate, mesh, etc.
Delivery time: 10-30 days (1-1000 pieces)
Packaging: standard export plywood cases or according to your requirements
Shipping: express, air freight, ocean freight
Loading Port: Port Shanghai, China
- Fast Delievery
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- 24/7 Customer Service
Product Introduction
MMO Disc Plate Anodes – High Current Output in Seawater Environments
Mixed Metal Oxide (MMO) disc plate anodes are commonly used in seawater-based cathodic protection systems, including offshore platforms, ship hulls, ballast tanks, and marine pipelines. Their ability to deliver high current density with minimal weight loss makes them a preferred choice for long-term installations.
This article describes a specific MMO disc plate anode model that combines a large active surface area with a practical mounting design.
Product Overview
The anode is manufactured as a disc plate with a diameter of 300 mm and a thickness of 3.175 mm. Both sides receive an MMO coating, which maximizes the electrochemically active area. On one side, a titanium stud is installed. The stud measures 12.7 mm in diameter and 10 mm in length, and it is drilled and tapped with an M8 thread. This design allows the anode to be securely mounted to a support structure or conductor bar.
Technical Specifications
| Parameter | Description |
|---|---|
| Shape | Disc plate |
| Diameter | 300 mm |
| Thickness | 3.175 mm |
| Coating | MMO on both sides |
| Mounting feature | Titanium stud, 12.7 mm diameter x 10 mm long, drilled and tapped M8 |
| Expected service life | 25 years |
| Maximum current density | 600 A/m² in seawater |
Advantages
Light weight and durable
The titanium substrate provides strength without adding unnecessary weight. This makes handling and installation easier compared to traditional anodes.
High current output
With a current density rating of 600 A/m² in seawater, this anode supports demanding cathodic protection requirements. The double-sided MMO coating contributes to stable, high-efficiency performance.
Low cost
MMO technology offers a favorable balance between initial investment and long-term service life. The anode does not need frequent replacement, which reduces overall project costs.
Dimensionally stable
Unlike some consumable anodes, MMO disc plate anodes do not change shape or size significantly during operation. This predictable behavior simplifies system design and maintenance planning.
Cost-effective
When combined with a 25-year expected life, the low maintenance requirement and consistent current output deliver a low total cost of ownership over the life of the protection system.
Typical Applications
Offshore platforms and subsea structures
Buried or submerged pipelines
Marine vessel hulls and ballast tanks
Port and harbor infrastructure
Heat exchangers and cooling water systems using seawater
Installation Note
The M8 tapped stud allows the anode to be attached using a threaded rod or bolt. Ensure electrical contact is maintained between the anode and the cathode protection system cable. The anode should be positioned to allow free flow of seawater across both coated surfaces.
Quality Assurance
Each production batch follows controlled procedures for titanium substrate preparation, MMO coating application, and stud welding or fitting. Dimensional checks are performed to confirm diameter, thickness, thread specification, and stud alignment.
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