Comparision of Service Life of Corrugated Steel Pipe with Different Anticorrosion Methods

Metal with Galvanized Coating
AreasCorrosion AmountService LifeCalculation Method
Heavy Industrial Area21.126Service Life = (Galvanized Content/Corrosion Amount)*90%
Coastal Area9.557
Suburban Area5.3102
Urban Area13.241
Galvanized Content=600g/㎡ (84μm)
Additional Service Life of Non-metallic Coating and Lining (CSPI)
CoatingSide Touch WaterSide Touch Soil
Additional Life (Years)Maximum Abrasion gradeAdditional Life (Years)
Bitumen Coating2 – 20225 – 50
Bitumen Coating + Lining10 – 30325 – 50
Polymer Coating25 – 100350 – 100
Polymer Coating + Lining30 – 100350 – 100
The Bottom Arch is Coated with Polymeric Asphalt15 – 403
The Bottom Arch is Lined with Concrete or Plastic25 – 754

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