Ductile Iron
Pipe
Ductile Iron Pipe with its low content of sulfur,
phosphorus and low anti-harmful element, adopts medium
frequency new technology and has been first choice for
water, gas and oil transfer.
The main grades include
17 specifications of T type joint from DN60mm to
DN2200mm, and 14 specifications of S and H and N1 type
joint from DN100 mm to DN700mm.
All ductile iron
pipes manufactured in accordance with ISO2531 EN545
standards.
Inside ordinary cement mortar lining as
per ISO4179 standards.
Outside metallic zinc coating
(min. 130gsm) plus a finishing bitumen layer (min.70μm)
As per ISO8179 standards.
Packing:
DN≥300mm pipes will be
in bulk.
Ductile Iron Pipe Technology
Index:
1.T
Type Centrifugation DIP (Level K9, available length:
6m)
2. N1
Type Centrifugation DIP (Level K9, available
length: 6m)
3.S
Type Centrifugation DIP (Level K9, available length:
6m)
4.Chemical Composition Comparative
Statement
Chemical Composition Comparative
Statement |
chemical composition |
DIP |
Steel Pipe |
Gray Pig Iron |
(％) |
（c） |
3.5-4.0 |
0.1-0.2 |
3.2-3.8 |
（Si） |
1.9-2.6 |
0.15-0.4 |
1.4-2.2 |
（Mn） |
0.15-0.45 |
0.3-0.6 |
0.4-0.6 |
（p） |
≤0.06 |
0.02-0.03 |
≤0.3 |
(s) |
≤0.02 |
0.02-0.03 |
≤0.1 |
(Mg) |
0.03-0.06 |
- |
- |
5.Pipe Anti-corrosion Comparative
Statement under the Affect of Drinking Water
Pipe Anti-corrosion Comparative
Statement under the Affect of Drinking Water |
Pipe Kinds |
Corrosion （gr/cm2） |
After 45 days |
After 90 days |
DIP |
0.006 |
0.009 |
Gray Pig Iron Pipe |
0.006 |
0.0103 |
Seamless Steel Pipe |
0.017 |
0.0273 |
Welded Steel Pipe |
0.0294 |
0.0396 |
6. Machinery Property
Machinery Property |
|
DIP |
DIP |
Gray pig iron pipe |
Steel pipe |
(Annealing) |
(Non-Annealing) |
Tensile strength (N/mm2) |
≥420 |
|
150-260 |
≥400 |
Bending strength(N/mm2) |
≥590 |
≤300 |
200-300 |
≥400 |
|
Extensibility (%) |
≥10 |
3-5 |
Neglect |
≥18 |
|
Hardness(HB) |
≤230 |
|
≤210 |
about 140 |
|
Hydraulic Testing
Pressure(Mpa) |
≤DN300 |
50 |
|
|
2.5-3.0 |
DN350-600 |
40 |
DN700-1000 |
32 |
Gas Leakage Test
Pressure(Mpa) |
≥0.3 |
|
|
|
|
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