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Flexible Anode

What is Flexible Anode

There is a continuous copper cable in the flexible anode. The current amount and length of the cable and the piggyback anode should be matched. The nominal cross-sectional area should be ≥ 10mm2. The insulation material of the cable should be resistant to the high chlorine and high oxidation environment of the anode operation. The thickness of the insulation layer should meet the requirements of the anode life. Xlpe/pvc cables are used for general soil environment, and pvdf/hmwpe cables are used for chloride or chemical pollution environment.

Di Noer Technology Co., Ltd.— Professional Titanium Anode Manufacturing Factory
Direct Manufacturer · In-house Production · Stable Supply · Customization Available
●Core Manufacturing Capabilities
●Modern Production Facility

Workshop Area: 1200㎡ (600㎡ for Flexible Anode Workshop + 600㎡ for MMO Coating Workshop)

Fully Automated Lines: 6 dedicated titanium anode production lines
Strict Quality Control: ISO 9001 Quality Management System, 99%+ pass rate at factory inspection

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Advanced Processes & Equipment

Titanium Substrate Processin

Precision laser cutting (±0.1mm), sandblasting and acid pickling (Sa≥3.2μm)

MMO Coating

Imported coating systems + high-temperature sintering for uniform, durable coatings

Testing Laboratory

Salt spray testing (1000+ hours), XRF thickness gauge, electrochemical workstation

sandblasting

Coating

Testing

Process Step	Equipment	Technical Specs	Quality Standard
Titanium Processing	TRUMPF German Laser Cutting Machine	±0.05mm Tolerance	ASTM B265
Surface Activation	Sandblasting + Electrolytic Pickling Line	Sa≥3.2μm	ISO 8501-1
Coating Preparation	Japanese Imported Coating System	Coating Thickness Tolerance ≤5%	DIN 4768
High-Temp Sintering	Controlled Atmosphere Sintering Furnace	Temp Fluctuation ±3℃	ISO 4536

Precision Machining Area (Dynamic Display)

Step 1: CNC Laser Cutting

Step 2: 3D Sandblasting Treatment

Coating Preparation Area

Constant temperature & humidity coating room

Multi-stage sintering process

Finished Product Testing Area

100% Current Efficiency Test

Salt Spray Test Sample Comparison before shipment

Flexible Supply Capability

In-stock Inventory: 32 standard models available, small batch trial orders supported

Fast Delivery: Standard orders shipped within 15 days, In-stock items shipped same day, Urgent orders: expedited production available

Global Logistics: Shock-proof packaging, supports sea/air/land transport

Certifications & Verified Data

Material Certification

ASTM B265 Gr1/Gr2 titanium

Performance Testing

IEC 62561-7 Conductivity Certification

Environmental Compliance

RoHS & REACH

Corrosion Resistance

Salt spray test reports

International Market Access

CE Certification (EU market)

Why Choose Dinoer?

Direct Supply from Factory

No middlemen, better cost-effectiveness

Flexible Customization

OEM for dimensions, coatings, shapes (plate/tube/mesh/strip/V-shape)

Rich Experience

Partnerships with top chemical & oil enterprises

Technical Support

Anode selection guidance + after-sales technical support

Supply Chain Strength – Dedicated Support for Key Accounts

✓ Flexible Capacity: Emergency allocation of 50,000㎡/month

✓ Inventory Strategy: 32 standard models in stock

✓ Logistics Solutions: Specialized anode packaging

✓ Case Studies: 3 consecutive years of zero complaints from multinational clients in Brazil & India

"Global Client Factory Audit Welcome – VIP Workshop Tour Available"
"Exclusive for Key Accounts: Custom Production Visualization System Integration"

📞 Welcome to Visit Our Factory!
📍 Address: Jinhai Industrial Park, Jintai District, Baoji City, Shaanxi, China
☎ Tel: 0917-3335462
📱 Mobile: +86 138 9245 5776
📧 Email: dinore@di-nol.com / dinore@foxmail.com

Titanium Anode Performance Data Table (Technical Edition)

Customer Concern	Technical Parameter	Test Method / Standard	Customer Benefit
Anode Lifespan	- Substrate: ASTM B265 Gr1/Gr2 Titanium - Coating: MMO (IrTa/TiTa) - Avg. Lifespan: 15–20 years (normal use) - Extreme Environments: 8–10 years (pH<1 or Cl⁻>50g/L)	ASTM G31 Immersion Test Accelerated Aging Test (3000 hrs)	Fewer replacements, 40%+ reduction in lifecycle cost
Current Efficiency	- Operating Current Density: 20–200A/m² - Current Efficiency: ≥95% (freshwater) - Polarization Potential: ≤1.25V (vs. SCE)	Electrochemical Workstation Test IEC 62561-7	Higher electrolysis efficiency, 30%+ energy savings
Conductivity	- Coating Resistivity: ≤50μΩ·cm - Contact Resistance: <0.5Ω·cm²	Four-point Probe Test EIS Impedance Analysis	Lower power loss, ideal for high-current applications
Corrosion Resistance	- Acid-alkali range: pH 0–14 - Salt Spray: ≥1000 hrs no peeling - Chloride Resistance: ≤100g/L	ASTM B117 Salt Spray Test NACE TM0177	Withstands extreme conditions, minimizes unplanned downtime
Anode Form	- Standard: Tubular (Φ10–200mm), Mesh (5–50 mesh), Plate (0.5–5mm thick) - Custom: Shaped cutting, flexible anodes (min. bending radius ≥30cm)	3D Scan Inspection Customer Acceptance Report	Adaptable to complex installation needs
Maintenance Cost	- Maintenance Cycle: 5–8 years (standard use) - Cost Comparison: 50% lower than lead anodes	LCC Lifecycle Cost Analysis Procurement Data Tracking	Significant long-term cost advantage

Benefits of Flexible Anode

Strong corrosion resistance

MMO flexible anode has excellent corrosion resistance, and can work in the field environment and industrial environment for a long time without being affected by severe corrosion.

Uniform current distribution

MMO flexible anodes are manufactured using a special electrolytic process, and the titanium coating on the surface can achieve uniform current distribution and avoid corrosion problems caused by current concentration.

Strong adaptability

MMO flexible anode has the advantages of light weight, easy bending, and easy installation. It can be customized and changed in shape according to needs to meet the needs of different working environments.

Long life

MMO flexible anode has a long service life, which can reach more than 20 years, which is longer than other anodes.

Low maintenance cost

Due to strong corrosion resistance and long life, MMO flexible anode does not require routine maintenance and replacement, which can reduce maintenance costs.

Easy to implement

Due to its light and easy to carry advantages, the construction process of MMO flexible anode is more convenient and quicker than other anodes.

Application of Flexible Anode

Anti-corrosion of reinforced concrete

Flexible Anode can be used for anti-corrosion of reinforced concrete structures and prolong the service life of structures.

Anti-corrosion of bridges

Bridge structures are often in humid, high temperature, acid rain and other environments, and Flexible Anode can also play a certain role in anti-corrosion in such environments.

Anti-corrosion of ships

Flexible Anode can be used for the protection of corroded parts of ships, such as pipelines, pumps and hull surfaces.

Anti-corrosion of oil and gas wells, mines, and storage tanks

For oil and gas wells, mines, storage tanks and other equipment, Flexible Anode can be used for anti-corrosion work to improve the service life of the equipment.

Urban water pipelines, sewage treatment plants, etc

Urban water pipelines, sewage treatment plants and other facilities also need anti-corrosion, and Flexible Anode can also provide certain anti-corrosion protection for them.

Components of Flexible Anode

Basic structure: Internal cable, MMO conductor, pre-filled petroleum calcined coke powder, textile covering layer, long fiber braided layer.

Internal cable: The continuous internal cable provides a stable current for the anode. 13 strands of copper wire are twisted to ensure flexibility.

MMO wire: As the main body of the anode, it is a mixture of iridium/tantalum oxide coated on the surface of the titanium wire.

Petroleum calcined coke powder: Reduce the contact resistance between the auxiliary anode (conductive polymer or MMO/Ti wire) and the soil, so that an electrochemical reaction occurs between the carbon powder/soil electrolyte around the auxiliary anode (MMO/Ti wire), thereby ensuring that the protected object is not electrochemically corroded and extending the service life of the auxiliary anode.

Textile covering layer: Wrap the carbon powder around the anode in a ring shape with a certain stacking density to ensure that the carbon powder will not be displaced, loosened, or scattered during storage, transportation, construction, and use, so as not to affect the normal use and life of the flexible anode.

Long fiber braided layer: The flexible anode protects the textile covering layer from wear during construction and installation, and further tightens and fixes the carbon powder and textile covering layer.

Short Description About Flexible Anode Market

The Global Flexible Anode market is anticipated to rise at a considerable rate during the forecast period, between 2023 and 2031. In 2022, the market is growing at a steady rate and with the rising adoption of strategies by key players, the market is expected to rise over the projected horizon.

North America, especially The United States, will still play an important role which cannot be ignored. Any changes from United States might affect the development trend of Flexible Anode. The market in North America is expected to grow considerably during the forecast period. The high adoption of advanced technology and the presence of large players in this region are likely to create ample growth opportunities for the market.

How to Choose Flexible Anode

Cable materials
When selecting cathodically protected cables, the materials used in the cables should be considered. High-quality cathodic protection cables usually use corrosion-resistant and wear-resistant materials, such as polyvinyl chloride (PVC), polyethylene (PE), fluoroplastic (FEP), neoprene (CR), etc. These materials can resist chemical substances and physical wear in the environment, ensuring long-term stable operation of the cable.

Cable diameter and dimensions
The diameter and size of the cathodic protection cable should match the required current load. Choosing a cable of appropriate diameter ensures that sufficient current can flow through the system, effectively protecting the metal structure from corrosion.

Durability and lifespan
It is crucial to consider the durability and longevity of the cable. A quality cathodically protected cable should have a long service life and be able to maintain its performance under a variety of environmental conditions. Weather resistance, chemical resistance and UV resistance are key factors in assessing cable life.

Environmental factors
Environmental conditions also have an important influence on the selection of cathodic protection cables. Different environments, such as high-salinity marine environments, high temperatures or extremely cold climates, will pose challenges to the performance and durability of cables. Therefore, when selecting cables, the characteristics of the environment must be taken into consideration.

Installation requirements and methods
Different types of cathodic protection systems may require specific types or specially designed cables. Taking into account the installation requirements and methods, it is very important to select the correct cable for the specific system. Some systems may require cables that are resistant to high temperatures or high voltages, while other systems may require cables that are resistant to low temperatures or are flexible.

Cost-effectiveness
Finally, cost-effectiveness is an important factor to consider when selecting cathodically protected cables. While quality cables may be more expensive, they generally have a longer lifespan and better performance and may be more affordable in the long run.

How Does the Flexible Anode Work?

Installation
The powered flexible anode is typically made of a conductive material like titanium and is inserted into the water heater tank, much like a traditional sacrificial flexible anode.

Electrical connection
The powered flexible anode is then connected to a power source, usually through an electrical outlet. The power source provides a small electrical current to the rod.

Electric field formation

When the power is supplied, the powered flexible anode generates a mild electrical current. This electric current creates a protective electric field within the water heater tank.

Protective mechanism

As the protective electric field forms, it interacts with the water and the tank's internal surfaces. This electric field helps prevent the formation of corrosion-inducing elements and inhibits the occurrence of rust and corrosion within the tank.

Continuous protection

Unlike sacrificial flexible anode, which gradually dissolve over time and require replacement, powered flexible anode provide continuous protection as long as they are connected to a power source.

How to Maintain Flexible Anode

Cathodic Isolation
Cathodic isolation requires relatively low maintenance, at least compared to the other methods of protection. Essentially, you must keep the components free from contact with soil, backfill, liquid, and debris. This can be done by removing the corrosive elements or by using an isolation sleeve/boot. In most cases, this issue can be addressed by the owner or operator and is as simple as removing the liquid of soil/backfill so that the metal component is completely clear. These areas must be inspected regularly to ensure that the issue does not reoccur. If the situation persists, a call to your service company may be in order to find a more permanent solution.

Galvanic (Sacrificial) Anode System
Galvanic (sacrificial) anode protection is a self-contained cathodic protection system. The anodes are attached directly to the tank or piping, and nearly everything is kept below the ground surface. In this type of installation, the metal has to be in contact with the soil/backfill or water to work properly. The anodes are engineered to protect the metallic structure they are attached to by corroding instead of that structure. The anode is placed in the backfill or water and then attached to the metal fitting with a lead wire and clamp.

Impressed Current System
This type of protection is similar to the sacrificial method, in that the components and anodes are below the ground surface. Impressed current differs from sacrificial protection by utilizing a rectifier and wiring to move energy between the components being protected and back out to the anodes. Of the three methods, the impressed current system requires the most attention. Operators must check the rectifier output values (amps, volts, & hours) every month, in addition to visually inspecting the anode wiring to make sure that none of the wires are exposed to potential damage. If the wires get damaged, the system will not work properly and the metal components will not be protected. The rectifier must remain on and operational at all times.

Our Factory

Di Noer Technology Co., Ltd. is located in Baoji High-tech Development Zone, which is known as "China Titanium Valley". It is a high-tech enterprise mainly engaged in electrochemical electrode materials, integrating research, development, professional production and sales. The company specializes in the production of MMO noble metal mixed oxide coated titanium anodes. The main products of titanium anodes are ruthenium-iridium-coated titanium anodes, iridium-tantalum-coated titanium anodes, titanium-coated ruthenium-coated anodes, titanium-coated platinum anodes, titanium-coated lead dioxide anodes, flexible anodes, etc.

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Our certificate

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FAQ

Q: Can you bend an anode rod?

A: Most anode rods are completely straight and are difficult to bend. If your space is limited, you may consider using a flexible anode.

Q: Do powered anode rods really work?

A: If the powered anode is made from the right material and it remains powered, the anode protects the other metal (steel water heater tank) for many years. It even lasts longer than a standard anode rod. The powered anode does not react with the water at all, but prevents any smelly water.

Q: What are the different types of anode rods?

A: Anode rods typically come in three varieties, made up of three different types of metals: magnesium, aluminum, and zinc. The magnesium anode rod is the most common type of anode rod. The magnesium rods are best used in areas with soft water as they corrode easily.

Q: What is the life expectancy of an anode rod?

A: 3-5 years
By replacing your anode rod every 3-5 years, your water heater can last well over 20 years without any risk of leaks and resulting water damage. Unfortunately, if you ignore this important water heater maintenance task, you may need to replace the entire water heater after only 10 years of use.

Q: Is it OK to remove anode rod from water heater?

A: We've heard of plumbers or handymen advising people to remove the sacrificial anodes from their water heaters as a solution to smelly water. It's a solution all right, but one that will ensure your water heater rusts out in record time. There is a reason why removing an anode voids the warranty.

Q: What is better zinc or magnesium anode rod?

A: Freshwater: Magnesium is the clear anode of choice. It offers superior protection in this low-conductivity liquid. Zinc anodes are not suitable for use in freshwater because they build up a hard, dense coating over a period of months – rendering the anode less effective.

Q: Does it matter what anode rod I use?

A: Magnesium is the most common type of anode rod. They corrode quickly, so they should not be used in homes with hard water. Aluminum anode rods are inexpensive, long-lasting, and flexible. These are perfect for homes with hard water.

Q: How often should I replace my anode rod?

A: The frequency of anode rod replacement depends on several factors, such as water quality, usage patterns, and the type of anode rod installed. In most cases, we recommend inspecting and potentially replacing the anode rod every 3 to 5 years.

Q: What type of anode rod for smelly water?

A: If you have a water softener installed at your home, you might need to reconsider the type of anode rod you use. Softeners often accelerate the corrosion of magnesium rods, which could exacerbate the rotten egg smell. In this case, a powered anode rod or an aluminum zinc rod could be a better fit.

Q: How to tell if an anode rod is bad?

A: A bad anode rod can cause discolored water, a rotten egg smell, air in the lines and intermittent hot water. The anode rod protects the tank of electric water heaters & signs it should be replaced are a rotten egg smell, no heat & strange sounds.

Q: Which is more flexible aluminum or steel?

A: Aluminium is much more flexible than steel, meaning it can be easily bent into various shapes. Steel is more rigid and will break if pushed too far. Aluminium is also very ductile and can be stretched without cracking.

Q: Can you have too many anodes?

A: You are only overprotected when the weight of the anodes is so great that your boat sinks! The voltage generated by zinc or aluminum anodes will not cause any damage – no matter how much anode material is added, the maximum voltage that can be generated is the voltage of the anode itself.

Q: How long will a water heater last without an anode rod?

A: Those minerals can eat away at the glass lining and then the steel tank. If you do no maintenance, that process will kill the tank in about 9 to 12 years. But if you put a magnesium or aluminum anode rod in the tank, it attracts the corrosive particles to spare the tank.

Q: How can you tell if an anode rod is magnesium or aluminum?

A: To identify which anode rode you have simply look at the face of the brass nut on the anode, if you see an “A” stamped into the front of the brass nut you have an aluminum anode, if the face of the nut is blank you have a magnesium anode.

Q: Can you put two anode rods in a water heater?

A: While we generally advocate putting two anodes in a tank, that may not be a good idea if you have odor problems. Doubling the anode surface area may worsen odor even when special aluminum/zinc anodes are used that reduce or eliminate the odor.

Q: Are aluminum anode rods good?

A: Aluminum Rods. Many plumbers prefer magnesium anodes because they produce a stronger current making them more effective at keeping the water tank from corroding. Aluminum rods collect a buildup of corrosive materials that harden and make taking them out for inspection or replacement a challenge.

Q: Why is titanium a good anode?

A: Low working voltage, minimal power usage, and a 20% reduction in consumption are all advantages. Titanium anodes have a long working life, diaphragm cell electrolysis process in chlor-alkali industry, metal anodes are resistant to chlorine and alkali corrosion.Impressed current cathodic protection is provided by connecting a DC power source between the metal being protected and the cathodic protection anodes. In contrast to GACP, the cathodic protection current is supplied by the DC power source and not by corrosion of the anode itself.

Q: What type of anode rod is best?

A: Water hardness: Magnesium anode rods are more effective in soft water, while aluminum anode rods are more effective in hard water. This is because magnesium anode rods will corrode faster in hard water, which means that they will need to be replaced more frequently.By connecting the two metals together, an average voltage is created. If the combined voltage is -0.85 volts or greater, the tank will be protected. If the voltage is below -0.85 volts, partial but not complete protection will exist.

Q: What is a cathodic protection cable?

A: Cathodic Protection Cable consists of a copper conductor insulated with a plastic compound that is highly corrosion and abrasion resistant. Equipped with either a High Molecular Weight Polyethlene (HMWPE), Halar (ECTFE), or Kynar (PVDF) jacket, cathodic protection cable is typically a stranded construction.Cathodic protection is the most commonly used of these two methods, and it is widely used on carbon-steel structures as well as on other structural metals. Anodic protection is used on occasion in the chemical-process and mining industries where extremely aggressive environments are encountered.

Q: What is the purpose of cathodic protection?

A: Cathodic protection is one of the most effective methods for preventing corrosion on a metal surface. Cathodic protection is commonly used to protect numerous structures against corrosion, such as ships, offshore floaters, subsea equipment, harbours, pipelines, tanks; basically all submerged or buried metal structures.

We're professional flexible anode manufacturers and suppliers in China, specialized in providing high quality customized products. We warmly welcome you to buy high-grade flexible anode for sale here and get pricelist from our factory. For price consultation, contact us.

Conductive Polymer Flexible Anode, Cathodic Protection Cable, Flexible Anode