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Ductile Iron (DI) Pipes - Manufacturing Process |
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| RAW MATERIAL |
| The major inputs like pig iron, cast iron, sponge iron are manufactured at the most modern composite iron and steel plant of Electrotherm situated in the same campus as the plant for manufacture of DI Pipes. The composite iron and steel plant of Electrotherm. |
| INDUCTION FURNACE |
| Melting done from solid charge for hot metal. Weighed, known charge is put to the furnace. Analysis of metal bath is done. Final adjustment of chemical composition is achieved by additives and chemical analysis done by spectrometer for trace and |
| MAGNESIUM TREATMENT IN LADLE / CONVERTER |
| Fixed quantity of liquid metal is tapped from furnace to open ladle at about 1550 deg (± 50) C already containing required quantity of FeSiMg lumps covered with metallic covering. Qty. of FeSiMg is governed by opening S % and liquid metal quantity |
| CENTRIFUGAL CASTING MACHINE |
| Slag is removed before casting. Pouring temperature as per QAP. |
| ANNEALING FURNACE |
| Ferritizing anneal heat treatment. |
| ZINC COATING |
| External surface coating is done by arc paint process. Melted zinc is deposited as fog by compressed air. Coating mass per meter square as per QAP. |
| FETTLING |
| Cleaning of socket / spigot ends from sand and other materials. |
| HYDROSTATIC PRESSURE TESING |
| Each and every pipe is hydrotested at specified pressure to ensure leak proof pipes as per QAP. |
| CEMENT LINING |
| Inside of bore is given a cement mortar lining of 3 to 5 mm thickness as per QAP. |
| STEAM CURING |
| Slow curing by steam ensures rigid lining. |
| BITUMEN COATING |
| External surface coating is done by spraying of bitumen. Coating mass per square meter as per QAP. |
| MARKING |
| By stencilling logo, size, class, year of manufacture and length. |
| STOCK YARD |
| The pipes are properly stacked in the stock yard. |
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| Steel Division / Ductile Iron (DI) Pipes / Manufacturing Process |
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Quick Contact:
+91-2717-234553, 234613, 660550 |
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