ISO 2531 ductile iron pipe manufactured by vortex are mainly used for transferring the drinkable water,waste water and for irrigation.
The diameter is from DN80-DN2000,K8/K9/K10/K12, Tyton socket and spigot,the standard length is 6m.
ISO 2531 ductile iron pipe manufactured by vortex are mainly used for transferring the drinkable water,waste water and for irrigation.
The diameter is from DN80-DN2000,K8/K9/K10/K12, Tyton socket and spigot,the standard length is 6m.
K-grade pipes K9 are suitable for areas with complex terrain and need to resist foundation settlement, and are usually equipped with triple anti-corrosion treatment (zinc layer + asphalt + epoxy resin)
| Product name: | Ductile Iron Pipe |
| Standard: | ISO2531, EN545 , EN598. |
| Pipe class: | K9, K8, C40, C30, C25, etc. |
| Pipe joint: | Push-on joint(Tyton joint), K type joint, self-restrained joint |
| Effective length: | 6m, cut to 5.7m. |
| In general, the pipe length is 6m for bulk shipment and 5.7m for container shipment. | |
| Material: | Ductile Cast Iron GGG50 |
| Pressure: | PN10, PN16, PN25,PN40 |
| Application: | Water supply project, drainage, sewage, irrigation, water pipeline. |
| 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 | |
| Packing: | Bundled with steel belts or in bulk |
| Inspection | Factory Inspection certificate will be issued for every shipments. |
| Note: The coating can also be accordance with customers’ requirements. | |
The pressure level of ductile iron pipes is mainly divided into two systems: K and C. Among them, K (such as K7, K8, K9, K10) is divided by wall thickness coefficient, and the pressure bearing capacity is 1.0-1.6MPa and above; C (such as C25, C30, C40) is divided by allowable working pressure, and the pressure bearing range is 2.5-4.0MPa.
K-level pressure level system
Level definition: K-level is distinguished by wall thickness coefficient (K value). The larger the value, the thicker the wall thickness and the stronger the pressure bearing capacity.
K7 level: pressure bearing ≤1.0MPa, suitable for low-pressure scenarios.
K8 level: pressure bearing ≤1.25MPa.
K9 level (national standard level): pressure bearing ≥1.6MPa, widely used in water supply and drainage systems.
K10 level and above: customized high-pressure pipes, with higher pressure bearing.
Application scenarios: K-grade pipes are suitable for areas with complex terrain and need to resist foundation settlement, and are usually equipped with triple anti-corrosion treatment (zinc layer + asphalt + epoxy resin).
C-grade pressure grade system
Grade definition: Based on the international standard ISO2531, the allowable working pressure value is directly marked:
C25: 2.5MPa, suitable for general water supply systems.
C30: 3.0MPa, used for large water supply networks.
C40: 4.0MPa, to meet special high-pressure needs.
Features: The pressure bearing capacity of C-grade pipes is higher than that of K-grade pipes of the same specification, but the anti-corrosion performance may be slightly lower. It is mostly used for low-pressure water delivery or drainage in flat areas.
Selection suggestions
Pressure matching: Select according to the actual working pressure, such as 0.6-1.0MPa, K9 grade can be selected, and high-pressure scenarios (such as industrial water delivery) give priority to C grade.
Environmental adaptation: Corrosive environments require enhanced anti-corrosion measures (such as zinc layer ≥ 200g/㎡), and cold regions need to consider anti-freeze performance.
Cost balance: Too high a pressure level will increase costs, and professional calculations are required to determine an economically reasonable level.
