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 Tubular

Cast iron anodes are manufactured in a wide variety of dimensions, shapes and weights. A proprietary type of cast iron anode, originally manufactured from "off-specification" corrosion resistance piping, is called a tubular anode. This utilizes the ASTM 518 Grade 2 chromium alloy to have superior resistance to "end effect", common to anodes with poor connection resistance values.
Typical Applications
  • Horizontal Groundbeds
  • Deepwell / Open hole Groundbeds
  • Anode Strings
  • Internal Plant Protection
  • Offshore/Marine Structures
  • Seawater intakes
Chemical Composition
Element
ASTM-518
Grade 1
Grade 2
 
Silicon
14.2 - 14.75%
14.2 - 14.75%
 
Manganese
1.5% max.
1.5% max.
 
Chromium
-----
3.25 - 5.0%
 
Carbon
0.75 - 1.15%
0.75 - 1.15%
 
Copper
0.50% max
0.50% max
 
Iron
Balance
Balance
 
Consumpxion Rate
 
 
 
Soil
1 lb./Ay
0.75 lb./Ay
 
Seawater
18.5 lb./Ay
0.25 lb./Ay
 
For CP design a current density of not more than 30A/m2 of anode surface is recommended
Centre connection less than 0.001 Ohm resin encapsulated
Supported Cable: XLPE/PVC, HMWPE, PVDF(Kynar); XLPE/PVC/SWA/PVC, EPR/CSPE
Characteristics and Standard Dimensions
Size
Nominal Weight (lb)
Area (Sq/Ft)
Cable Size (max)
1.1X9
1
0.2
#8
1.5X9
4
0.3
#6
2X9
5
0.4
#4
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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