1.Payment: TT & L/C 2.MOQ:10tons 3.Delivery time:30days 4.ISO2531and EN545/EN598 5.54years large state-owned enterprises
1.The pipes standard in accordance with ISO2531,Class K9, L=6000mm,
2.T-Type joint and selfrestrained joint duictile iron pipe with cement lining conform conform to ISO4179,
3.Zinc (130g/M) + bitumen (70microns) painting accordance with ISO8179,
4.internal cement lining was in accordance with ISO4179
5.bitumen coating was in accordance with GB/T17459 .
6.all pipes according to the european standard EN545
7.matched all necessary T-type normal rubber gaskets in accordance with ISO4633.
| Ductile cast iron pipe | Grey iron pipe | Steel pipe | |
| Tensile strength(Mpa) | ≥420 | 150--260 | ≥400 |
| Yield strength(Mpa) | ≥300 | 200--360 | No confirmation |
| Bending strength(Mpa) | ≥590 | Neglected | ≥400 |
| Elongation(%) | ≥10 | ≤230 | ≥18 |
| Brinell hardness(HBS) | ≤230 | About 140 | |
| After annealing,the microstructure of ductile cast iron pipes is ferrite and a little pearlite,possessing excellen mechanical properties. | |||
Production process flow of ductile cast iron pipes
Pipe hoisting
Take precaution of handling pipe with steel cable, hoisting belts and specialized rigging avoiding from pipes rocking. While using steel cable, single cable is not admitted, for the purpose of protecting outer anti-corrosion layer, steel cable should be packed by rubber or other similar material. While using hook, it also should be covered with rubber or other similar material for protecting cement lining layer. Especially for pipe with relative large diameter, hook should be mounted a gasket with same shapes as internal diameter of pipes while handling.
Transportation
Put two pieces or more woods on the platform of the vehicle while transporting, pipes are laid on the wood and fixed by wedge. The part over the vehicle body should not be more the 1/4 of overall length of pipe. If pipes are piled up more than one layer, each layer of pipes should reverse, and buffering rubber or gasket should be put on the space between two layers of pipes, at last pipes are fixed up with steel cable and buffering gasket.
Pipe storage
Under pipes there should be put wedge or crosstie while stacking pipes, and socket and spigot of pipes should be interleaved and on the stop wedge in case of pipe’s rolling. Uneven and serious polluted ground, or slope and marshy are not available.
The ductile iron pipes are sold for global of the chart
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