Overview of the Ductile Iron Pipes
It has been more than 70 years since the invention of ductile iron pipe in the 1940s. With its high strength, high elongation, corrosion resistance, resistance to shock, easy construction and many other fine features, ductile iron pipe is the best choice in today’s world for conveying water and gas safely. Ductile iron, also called nodular iron or spheroidal graphite iron, is characterized by the presence of spheroidal graphite in the resultant castings.
Specification of the Ductile Iron Pipes
| Product Name | Ductile Iron Pipe, DI Pipe, Ductile Cast Iron Pipes, Nodular Cast Iron Pipe |
| Length | 1-12 Meters or as the requirement of the customer |
| Size | DN 80 mm to DN 2000 mm |
| Grade | K9, K8, C40, C30, C25, etc. |
| Standard | ISO2531, EN545, EN598, GB, etc |
| Pipe Joint | Push-on joint(Tyton joint), K type joint, self-restrained joint |
| Material | Ductile Cast Iron |
| Internal Coating | a). Portland cement mortar lining |
| b). Sulphate Resistant cement mortar lining | |
| c). High-Aluminum cement mortar lining | |
| d). Fusion bonded epoxy coating | |
| e). Liquid epoxy painting | |
| f). Black bitumen painting | |
| External Coating | a). zinc+bitumen(70microns) painting |
| b). Fusion bonded epoxy coating | |
| c). Zinc-aluminum alloy +liquid epoxy painting | |
| Application | Water supply project, drainage, sewage, irrigation, water pipeline. |
Characters of the Ductile Iron Pipes
Ductile iron pipes are available in a range of diameters from 80 mm to 2000 mm and are suitable for both potable water transmission and distribution (in accordance with BS EN 545) and sewerage (in accordance with BS EN 598). Ductile iron pipes are simple to joint, can be laid in all weather conditions and often without the need for selected backfill. Its high safety factor and ability to accommodate ground movement make it the ideal pipeline material for a wide range of applications.
Grades of Ductile Iron Pipe We Can Supply
The following table is showing all the ductile iron material grades for each country. If you are American, then you could choose 60-40-18, 65-45-12, 70-50-05 etc., if you are from Australia, then you could choose 400-12, 500-7, 600-3 etc.
| Country | Ductile Iron Material Grades | |||||||
| 1 | China | QT400-18 | QT450-10 | QT500-7 | QT600-3 | QT700-2 | QT800-2 | QT900-2 |
| 2 | Japan | FCD400 | FCD450 | FCD500 | FCD600 | FCD700 | FCD800 | — |
| 3 | USA | 60-40-18 | 65-45-12 | 70-50-05 | 80-60-03 | 100-70-03 | 120-90-02 | — |
| 4 | Russia | B Ч 40 | B Ч 45 | B Ч 50 | B Ч 60 | B Ч 70 | B Ч 80 | B Ч 100 |
| 5 | Germany | GGG40 | — | GGG50 | GGG60 | GGG70 | GGG80 | — |
| 6 | Italy | GS370-17 | GS400-12 | GS500-7 | GS600-2 | GS700-2 | GS800-2 | — |
| 7 | France | FGS370-17 | FGS400-12 | FGS500-7 | FGS600-2 | FGS700-2 | FGS800-2 | — |
| 8 | England | 400/17 | 420/12 | 500/7 | 600/7 | 700/2 | 800/2 | 900/2 |
| 9 | Poland | ZS3817 | ZS4012 | ZS5002 | ZS6002 | ZS7002 | ZS8002 | ZS9002 |
| 10 | India | SG370/17 | SG400/12 | SG500/7 | SG600/3 | SG700/2 | SG800/2 | — |
| 11 | Romania | — | — | — | — | FGN70-3 | — | — |
| 12 | Spain | FGE38-17 | FGE42-12 | FGE50-7 | FGE60-2 | FGE70-2 | FGE80-2 | — |
| 13 | Belgium | FNG38-17 | FNG42-12 | FNG50-7 | FNG60-2 | FNG70-2 | FNG80-2 | — |
| 14 | Australia | 400-12 | 400-12 | 500-7 | 600-3 | 700-2 | 800-2 | — |
| 15 | Sweden | 0717-02 | — | 0727-02 | 0732-03 | 0737-01 | 0864-03 | — |
| 16 | Hungary | GǒV38 | GǒV40 | GǒV50 | GǒV60 | GǒV70 | — | — |
| 17 | Bulgaria | 380-17 | 400-12 | 450-5, 500-2 | 600-2 | 700-2 | 800-2 | 900-2 |
| 18 | ISO | 400-18 | 450-10 | 500-7 | 600-3 | 700-2 | 800-2 | 900-2 |
| 19 | COPANT | — | FMNP45007 | FMNP55005 | FMNP65003 | FMNP70002 | — | — |
| 20 | China Taiwan | GRP400 | — | GRP500 | GRP600 | GRP700 | GRP800 | — |
| 21 | Holland | GN38 | GN42 | GN50 | GN60 | GN70 | — | — |
| 22 | Luxembourg | FNG38-17 | FNG42-12 | FNG50-7 | FNG60-2 | FNG70-2 | FNG80-2 | — |
| 23 | Austria | SG38 | SG42 | SG50 | SG60 | SG70 | — | — |
Ductile Iron Applications
Ductile iron has greater strength and ductility than gray iron. Those properties allow it to be used effectively in a wide variety of industrial applications, including pipe, automotive components, wheels, gear boxes, pump housings, machine frames for the wind-power industry, and many more. Because it does not fracture like gray iron, ductile iron is also safe to use in impact-protection applications, such as bollards.
