A zinc ribbon anode provides cathodic protection (CP) for underground coated pipelines. Zinc, being a sacrificing element in zinc ribbon anodes, contributes to a very simple, cost-effective and maintenance-free corrosion control method for buried or immersed metals such as iron, steel, aluminum or copper. Zinc ribbon anodes are an ideal solution only for coated pipelines.
Zinc ribbon anodes are especially useful:
- Where human intervention is limited or for isolated locations (e.g., intrastate or interstate pipelines)
- Where other cathodic protection (CP) systems require monitoring and frequent maintenance
- Where an external power source are not possible (e.g., locations where equipment is battery or solar powered)
Zinc ribbon anodes are used in a variety of applications, including:
- Simple and cost-effective solutions that provide cathodic protection to underground petroleum, water or sewage pipelines
- When the effect of an AC current on pipelines must be minimized
- As sacrificial cathodic protection on the bottom portion of storage tanks built above ground
Typical Application
Onshore
AC Mitigation
Pipeline
Tank Bottom
FEATURES
Product | Giga | Extra | Normal | Mini |
Cross section: | 25,4mm x31,75mm 1″ x 11/4 “ |
15,88mmx22,22mm 5/8″ x 7/8 “ |
12,7mm x 4,28mm 1/2″ x 9/16 “ |
8,73mm x11,32mm 11/32 x 15/32 |
Weight: | 3.570kg/m 2.4lbs/ft |
1.785kg/m 1.2lbs/ft |
0.8925kg/m 0.6lbs/ft | 0.372kg/m 0.25lbs/ft |
Diameter of galvanised wire core: | 4.7mm 0.185″ |
3.43mm 0.135″ |
3.3mm 0.13″ |
2.92mm 0.115″ |
Standard coil length: | 30.5m (100ft) |
61.0m (200ft) |
152.0m (500ft) |
305m (1000ft) |
Standard coil ID: | 91.44mm (36″) |
91.44mm (36″) |
30.5mm (12″) |
30.5mm (12″) |
Packing: | Steel-banded random-wound open coils | Steel-banded random-wound open coils | Wood Reels | Wood Reels |
Chemical Composition ASTM B418
Element | Type I | Type II |
Aluminum | 0.1-0.5% | <0.005% |
Cadmium | 0.035-0.10% | <0.003% |
Iron | <0.005% | <0.014% |
Copper | <0.003% | <0.002% |
Pb | <0.006% | <0.003% |
Mg | – | – |
Other single | <0.02% | <0.001% |
Total Others | <0.10% | <0.005% |
Zinc | Balance | Balance |
Electrochemical characteristics | ||
Capacity min | 780 Ahr/Kg | 740 Ahr/Kg |
Closed circuit potential (Ag/AgCl) | -1.03V | -1.00V |
Consumption rate | 11.2Kg/year | 11.9Kg/year |
Cable
Length: 10m
Cross section
- 6sqmm
- 10sqmm
- 16sqmm
- 25sqmm
Insulation/Sheathing
-
- PVC/PVC
- XLPE/PVC
- HMWPE
Cable Steel connection
- Copper crimp link
- Brazing
Insulation material between Cable anodes core
- Epoxy Resin/heat shrink
- Splice kit