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Electrosteel Castings Limited (ECL) is the pioneer in setting up the first Ductile Iron Pipe Plant in the Indian Sub-continent in 1994 and has more than 70 years of experience in making Cast/ Ductile Iron spun pipes and fittings.
Ductile Iron is an improved variety of Cast Iron invented in 1949. It is also known as Spheroidal Graphite Iron or Nodular Cast Iron. Centrifugally cast Ductile Iron pipes are one of the most preferred materials for water supply and sewerage applications across the world due to its host of advantages. Pipes made from Ductile Cast Iron provide substantial benefits in terms of pressure bearing ability, impact resistance and capacity to sustain external static/ dynamic loading.
| Properties | Ductile Iron Pipe | |
|---|---|---|
| Tensile Strength | Min. 420 MPa | |
| Yield Strength | 300 MPa | |
| Elongation (min) at break | 10% | |
| Modulus of Elasticity | 1.7 x 10¹⁰ Kg/m² | |
| Hardness | Max. 230 BHN |
Ductile Iron pipes made by Electrosteel Castings Ltd. conform to the following Indian and International standards:
IS 8329 / IS 9523, ISO 2531 / ISO 7186, EN 545 / EN 598, AWWA - C 151
PRESSURE CLASS
THICKNESS CLASS
| Nominal Dia. DN | External Dia. (DE) | Tol. on DE | Preferred 'C' class | C class Nom Thickness | Nominal Thickness of K9 | Nominal Thickness of K7 | |
|---|---|---|---|---|---|---|---|
| 80 mm | 98 mm | +1/-2.7 mm | C40 | 4.4 mm | 6 mm | 5 mm | |
| 100 mm | 118 mm | +1/-2.8 mm | C40 | 4.4 mm | 6 mm | 5 mm | |
| 150 mm | 170 mm | +1/-2.9 mm | C40 | 4.5 mm | 6 mm | 5 mm | |
| 200 mm | 222 mm | +1/-3.0 mm | C40 | 4.7 mm | 6.3 mm | 5 mm | |
| 250 mm | 274 mm | +1/-3.1 mm | C40 | 5.5 mm | 6.8 mm | 5.3 mm | |
| 300 mm | 326 mm | +1/-3.3 mm | C40 | 6.2 mm | 7.2 mm | 5.6 mm | |
| 350 mm | 378 mm | +1/-3.4 mm | C30 | 6.3 mm | 7.7 mm | 6.0 mm | |
| 400 mm | 429 mm | +1/-3.5 mm | C30 | 6.5 mm | 8.1 mm | 6.3 mm | |
| 450 mm | 480 mm | +1/-3.6 mm | C30 | 6.9 mm | 8.6 mm | 6.6 mm | |
| 500 mm | 532 mm | +1/-3.8 mm | C30 | 7.5 mm | 9.0 mm | 7.0 mm | |
| 600 mm | 635 mm | +1/-4.0 mm | C30 | 8.7 mm | 9.9 mm | 7.7 mm | |
| 700 mm | 738 mm | +1/4.3 mm | C25 | 8.8 mm | 10.8 mm | 9.0 mm | |
| 800 mm | 842 mm | +1/4.5 mm | C25 | 9.6 mm | 11.7 mm | 10.4 mm | |
| 900 mm | 945 mm | +1/-4.8 mm | C25 | 10.6 mm | 12.6 mm | 11.2 mm | |
| 1000 mm | 1048 mm | +1/-5.0 mm | C25 | 11.6 mm | 13.5 mm | 12.0 mm | |
| 1100 mm | 1152 mm | +1/-6.0 mm | C25 | 12.6 mm | 14.4 mm | - | |
| 1200 mm | 1255 mm | +1/-6.2 mm | C25 | 13.6 mm | 15.3 mm | - |
* Note: Preferred 'C' class as per ISO2531/2009
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Raw and clear water transmission(pumping and gravity main)
Distribution network of potable water
Water supply for industrial/process plant application
Vertical connection to utilities and reservoirs
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Sewerage and waste water force main
Gravity sewerage collection and disposal system
Storm water drainage piping
Effluent disposal system for domestic and industrial application
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Desalination plants
Recycling system
Piping work inside water and sewage treatment plants
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Fire-fighting systems – on-shore and off-shore
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Piling for ground stabilization
Protective piping under major carriage-ways
Trenchless applications
Raw and clear water transmission(pumping and gravity main)
Distribution network of potable water
Water supply for industrial/process plant application
Vertical connection to utilities and reservoirs
| NAME OF PROTECTION | DESCRIPTION | GUIDING STANDARDS |
|---|---|---|
| Cement Mortar Lining | Normally, all pipes are supplied with centrifugally applied internal Cement Mortar Lining. | ISO 4179 BS EN 545 IS 8329 |
| Ceramic Epoxy | Ceramic Epoxy lining offers a very high chemical and abrasion resistance and is normally used for waste water conveyance. | BS EN 598 |
| Polyurethane Lining | Polyurethane (PU) internal lining is applied inside Ductile Iron Pipes, as per BS EN 15655 | BS EN 15655. |
| NAME OF PROTECTION | DESCRIPTION | GUIDING STANDARDS |
|---|---|---|
| Metallic Zinc with Finishing Layer (Bitumen or Synthetic Resin) | A metallic Zinc alloy layer applied by thermal metallization process on the Ductile Iron Pipe surface. | IS:8329 ISO: 8179 (Part-1) BS EN 545 |
| Zinc Aluminium Alloy Coating with Finishing Layer (Bitumen or Synthetic Resin) | For corrosive soil environment, Electrosteel Castings Ltd. has developed a patented process of Zinc Aluminium alloy coating which consists of a metallic Zinc Aluminium alloy layer. | ISO: 8179 (Part-1) BS EN 545 |
| Polyurethane Coating | Electrosteel offers pipes with External Polyurethane Coating for heavy duty corrosion protection in highly aggressive soil. DOWNLOAD | BS EN 15189 |
| Polyethylene Sleeving | Polyethylene encasement is found to be very effective for protection of Ductile Iron Pipes and Fittings. | ISO 8180/ AWWA C 105 |
| PE Tape Wrapping | A PE tape with approved adhesive is applied on the Ductile Iron Pipe over a bitumen based primer, with 25 mm overlap on itself or 55% overlap. | - |
