|
Parameters |
GI Pipes |
PVC Pipes |
CPVC Pipes |
| Full Form | Galvanised Iron | Poly Vinly Chloride | Chlorinated Poly Vinyl Chloride |
| IS Code | IS 1239:2004 | IS 4985:2000 | IS 15778 |
| Composition | Iron/ Zinc | Chlorine/ Ethylene/ Color Pigments/ Additives | Chlorine/ Ethylene/ Color Pigments/ Additives |
| Hot Water Lines | Only for Cold Water Supply / Can be used for Hot water supply with woolen insulation around the pipe | Only for Cold Water Supply | Both Hot & Cold Water Supply |
| Uses | Used for water supply/ especialy for underground layed water supplied piping | Used for water supply and drain pipes | Used for water supply/ Hot water supply pipes |
| Durability | Very Good | Good | Good |
| Bendability | No | No | No |
| Fire Resistance | Yes | No | Yes/ Chlorination process makes the CPCV pipes Fire Retardant upto 220 Degrees Fahrenheit |
| Installation | Time consuming and requires more man hours than CPVC / PVC | Easily done through cold welding and saves man hours | Easily done through cold welding and saves man hours |
| Corrosion Resistance | No | Yes | Yes |
| Interior Pipe Smoothness | Smooth | Smooth | Very Smooth |
| Chlorine Resistance | Reactive to Chlorine | Reactive to Chlorine | Uneffected by Chlorine |
| Bacterial Growth | More than PVC | Lower than GI | Lower than PVC |
| Thicknesses Available (mm) | 20/ 25/ 32/40/50/63/75/90/110/140/160Upto 450mm | 15/ 20/ 25/ 32/ 40/ 50 | 20/25/32/40/50 |
| Pipe Length (Meters) | 3 Meters | 3 Meters/6 Meters | 3 Meters/5 Meters |
| Cost | Costly Compared to PVC / CPVC | Lesser than GI | Lesser than PVC |
| Types of Pipe Quality (Gauge) | Class A (Low) / Class B(Medium) / Class C (Heavy) | Class 1/ Class 2/ Class3/ Class5 | Class 1 SDR 11/ Class 2 SDR 13.5 |
| Ductility | Poor | Good | Very Good |
| Full Bore Flow | Possibility of developing scales/ pittings can restrict the full bore flow | Absence of scaling/ pittings leads to full bore flow | Absence of scaling/ pittings leads to full bore flow |
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