ICCP MMO Tubular Anode

Impressed current cathodic protection (ICCP) is a core technology for combating corrosion of underground pipelines, storage tanks, and other metal structures. MMO tubular anodes (mixed metal oxide tubular anodes), as the “core power source” of impressed current cathodic protection, have become the preferred anode form for corrosion protection in complex environments such as soil and freshwater.

MMO tubular anodes use pure titanium as the substrate. Their surface is coated with an IrO₂-Ta₂O₅ mixed metal oxide active coating, possessing three core characteristics: high strength, high current efficiency, and long lifespan. The pure titanium substrate ensures that the anode does not corrode itself in media such as soil and seawater. The MMO coating exhibits excellent electrocatalytic activity, stably outputting current under low polarization conditions. Whether it’s the long-distance protection of oil and gas pipelines or the century-long safeguarding of the foundation piles of cross-sea bridges, MMO tubular anodes can build a durable “cathode protection barrier” for metal structures with the advantages of “low energy consumption and low maintenance.”

Customized ICCP MMO Tubular Anodes

Wstitanium offers end-to-end customization capabilities, from parameter design to technical adjustments, for various applications. We provide customized anode solutions based on your application scenario (medium type, installation space, protection requirements).

Compact Space Customization: Addressing the limited installation space in urban underground pipe networks (such as water pipes with a diameter <300mm), we have developed “bent short tube anodes”—bending titanium tubes to 90° or 135° at specific temperatures, shortening their length to 0.3m-0.5m. Combined with miniaturized lead-out rods, they can be installed directly in narrow spaces inside pipes without damaging the existing pipe structure.

Customized for High-Salinity Environments: For high-salt soils or seawater environments in coastal areas, we offer “Double-Coating Anti-Corrosion Anodes”—an additional 10μm layer of PTFE (polytetrafluoroethylene) salt-resistant coating is applied on top of the gradient coating. PTFE possesses extremely strong salt resistance and hydrophobicity, preventing Cl⁻ from penetrating to the active layer. Simultaneously, “Thickened Titanium Tubes” (wall thickness 2.5mm-3mm) enhance the substrate’s resistance to seawater corrosion, extending the anode life to over 25 years.

Customized for Deep Well Anodes: For deep well protection of long-distance pipelines (anode well depth > 30m), we design “Segmented Long-Pipe Anodes”—multiple 3m long anode segments are connected via titanium alloy flanges. Each anode segment has an independent lead-out wire, allowing for flexible length combinations based on well depth (up to 15m).

Customized Low-Temperature Environments: For cold regions (winter soil temperatures as low as -30°C), we optimize coating formulations and substrate technology—adding 5% rare earth elements (such as CeO₂) to the coating to enhance its electrocatalytic activity at low temperatures; and subjecting the titanium substrate tube to “low-temperature toughness treatment” to lower the brittle transition temperature of titanium, preventing anode breakage during low-temperature installation or soil frost heave.

Wstitanium also builds a “simulated environment testing platform.” Based on the medium samples you provide (such as soil and seawater), we recreate the actual usage environment in the laboratory, conducting over 1000 hours of simulated operation tests on the customized anodes. Only after verifying that its current output, corrosion resistance, and other performance characteristics meet the standards is mass-produced.