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Category C · 19 products

Pipeline and tank anodes

Galvanic anodes for buried pipelines, storage tanks, casings and wells — where soil and fresh water demand a different approach to seawater.

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Pipeline and tank anodes
Overview

Buried pipelines, storage tanks, casings and wells.

Onshore pipelines and tanks sit in soil or fresh water, where electrolyte resistivity is much higher than in seawater. Magnesium anodes, with their high driving voltage, are the usual choice — often supplied pre-packaged in a low-resistivity backfill that improves performance and stabilises current output.

We supply magnesium and zinc anodes in block, rod, ribbon and pre-packaged forms, together with anodes for tank internals, tank bottoms, casings and wells.

Typical materials
  • Magnesium — standard and high-potential alloys
  • Zinc (low-resistivity soils, ribbon and grounding)
  • Aluminium (tank internals with water bottoms)
Product list

All 19 pipeline and tank anodes.

  1. C01

    Pre-Packaged Anodes

    Magnesium or zinc anodes supplied in a cotton bag with gypsum, bentonite and sodium sulphate backfill, ready for burial.

  2. C02

    Bare Magnesium Anodes

    Magnesium anodes without backfill, for use in water or where backfill is placed separately.

  3. C03

    Drive-In Magnesium Anodes

    Pointed magnesium anodes that can be driven directly into soft ground, avoiding excavation.

  4. C04

    Extruded Magnesium Rod Anodes

    Extruded magnesium rods for water heaters, condensers, tanks and small structures.

  5. C05

    Magnesium Ribbon Anodes

    Continuous magnesium ribbon laid alongside pipelines in high-resistivity soil, in casings or for temporary protection.

  6. C06

    Zinc Ribbon Anodes

    Continuous zinc ribbon used for pipeline protection, AC mitigation and grounding, and under tank bottoms.

  7. C07

    Tank Internal Anodes

    Anodes installed inside tanks to protect the floor and lower shell in contact with water.

  8. C08

    Tank Bottom Anodes

    Anodes protecting the soil side of tank bottoms, installed beneath or around the tank.

  9. C09

    Tank Floor Anodes

    Anodes for tank floor plates, including systems installed during tank construction or floor replacement.

  10. C10

    Tank External Anodes

    Buried anodes protecting the external surfaces of underground and partly buried tanks.

  11. C11

    Oil Storage Tank Anodes

    Internal and external anodes for crude and product storage tanks, including water-bottom protection.

  12. C12

    Water Storage Tank Anodes

    Anodes for potable, process and fire water tanks.

  13. C13

    Fuel Tank Anodes

    Anodes for underground and above-ground fuel storage tanks.

  14. C14

    Casing Anodes

    Anodes for pipeline casings at road, rail and river crossings.

  15. C15

    Well Casing Anodes

    Anodes for oil, gas and water well casings.

  16. C16

    Borehole Anodes

    Anodes for installation in vertical boreholes where surface space is limited or soil near the surface has high resistivity.

  17. C17

    Groundbed Anodes

    Galvanic anode groundbeds — multiple anodes connected together to deliver the required current.

  18. C18

    Pipeline Test Anodes

    Anodes used for current-requirement surveys, field tests and test-station installations.

  19. C19

    Temporary Pipeline Anodes

    Anodes that protect pipelines during construction, before the permanent CP system is energised.

Applications

Where these anodes are used.

Buried pipelines

Oil, gas and water transmission and distribution lines.

Storage tanks

Oil, fuel, water and process storage tanks.

Wells and casings

Well casings, crossings and boreholes.

AC mitigation and grounding

Zinc ribbon for induced-AC mitigation and earthing.

Enquiry

What to include in your enquiry.

  • Structure type (pipeline, tank, casing, well)
  • Soil or water resistivity, if known
  • Anode type and material
  • Bare or pre-packaged; anode and bag dimensions
  • Cable type and length
  • Quantity and delivery schedule
Send an enquiry sales@relianodes.com
FAQ

Common questions.

Why are magnesium anodes used for buried pipelines?

Soil typically has much higher resistivity than seawater. Magnesium has the highest driving voltage of the common anode metals, so it can deliver useful current in these conditions.

What is the backfill in a pre-packaged anode?

Typically a mixture of gypsum, bentonite and sodium sulphate. It keeps moisture around the anode, lowers contact resistance and helps the anode consume evenly.

When is zinc ribbon used?

Zinc ribbon is used in lower-resistivity soils, for AC mitigation and grounding along pipelines, and beneath tank bottoms.

Can you supply anodes with cables attached?

Yes. Anodes can be supplied with lead wires of the specified type, size and length.

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Explore the rest of the range.

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