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Comparison - Thermodrain vs Cast Iron / Ductile Iron

THERMODRAIN FRP/GRP/COMPOSITE MANHOLE Covers Cast Iron / Ductile Iron MANHOLE Covers
High Strength To Weight Ratio. Low Strength To Weight Ratio
No Scrap Value Hence No Theft High RISK of THEFT
Light Weight - EASY To Handle Heavy - Needs More Manpower
Corrosion Resistant, No Effect of SEA / Sewage Water. Gets Corroded By Sewage & SEA Water
High Aesthetic Value, Available In Granite Finish Or Any Desired Color Standard Appearance
Self Pigmented. No Painting Required Painting Required at Regular Intervals
Less Fright & Handling Cost, Due To Less Weight Higher Fright and Handling Cost, Due To More Weight
No Extra GRP Plate Is Required To Protect From Corrosion Extra GRP Plate is Required Below the Cover To Protect From Corrosion
THERMODRAIN GRP MANHOLE CoverS Concrete Manhole Cover
No Steel Content, No Resale Value, Hence No Theft Theft Happens Due To Presence of Steel Internally
High Strength To Weight Ratio. Low Strength To Weight Ratio
Long Life (20-30 YEARS) Short Life (2-3 YEARS)
Light Weight - Easy To Handle Heavy - Needs More Manpower
Excellent Abrasion Resistance Poor Abrasion Resistance
No Erosion Due To Rain Water, and Moving Vehicles Gets Eroded Due To Rain Water, and Moving Vehicles.
No Effect of Sewage Water & Chemical Water Poor Resistance To Sewage Water & Chemical Water
No Environmental Degradation High Environmental Degradation