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BizVerify |
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| Metals International Limited |
| Verified By : SMR(HK) |
| Verified Date : 2011-03-25 |
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| ISO 2351,KSD4307,BS EN545,EN598,AS/NZS 2280-Ductile Iron Pipe |
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| Model No.︰ | - |
| Brand Name︰ | - |
| Country of Origin︰ | - |
| Unit Price︰ | CNY ¥ 940 / MT |
| Minimum Order︰ | 100 MT |
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DUCTILE IRON PIPE
Nominal Thicknesses for Standard Pressure
Classes of Ductile Iron Pipe
Size
in. |
Outside
Diameter
in. |
Pressure Class |
| 150 |
200 |
250 |
300 |
350 |
| Nominal Thickness -- in. |
| 3 |
3.96 |
- |
- |
- |
- |
0.25* |
| 4 |
4.80 |
- |
- |
- |
- |
0.25* |
| 6 |
6.90 |
- |
- |
- |
- |
0.25* |
| 8 |
9.05 |
- |
- |
- |
- |
0.25* |
| 10 |
11.10 |
- |
- |
- |
- |
0.26 |
| 12 |
13.20 |
- |
- |
- |
- |
0.28 |
| 14 |
15.30 |
- |
- |
0.28 |
0.30 |
0.31 |
| 16 |
17.40 |
- |
- |
0.30 |
0.32 |
0.34 |
| 18 |
19.50 |
- |
- |
0.31 |
0.34 |
0.36 |
| 20 |
21.60 |
- |
- |
0.33 |
0.36 |
0.38 |
| 24 |
25.80 |
- |
0.33 |
0.37 |
0.40 |
0.43 |
| 30 |
32.00 |
0.34 |
0.38 |
0.42 |
0.45 |
0.49 |
| 36 |
38.30 |
0.38 |
0.42 |
0.47 |
0.51 |
0.56 |
| 42 |
44.50 |
0.41 |
0.47 |
0.52 |
0.57 |
0.63 |
| 48 |
50.80 |
0.46 |
0.52 |
0.58 |
0.64 |
0.70 |
| 54 |
57.56 |
0.51 |
0.58 |
0.65 |
0.72 |
0.79 |
| 60 |
61.61 |
0.54 |
0.61 |
0.68 |
0.76 |
0.83 |
| 64 |
65.67 |
0.56 |
0.64 |
0.72 |
0.80 |
0.87 |
*Calculated thicknesses for these sizes and pressure ratings are less than those shown above. Presently these are the lowest nominal thicknesses available in these sizes.
Pressure classes are defined as the rated water working pressure of the pipe in psi. The thickness shown above are adequate for the rated water working pressure plus a surge allowance of 100 psi. Calculations are based on a minimum yield strength in tension of 42,000 psi and 2.0 safety factor times the sum of working pressure and 100 psi surge allowance.
Thickness can be calculated for rated water working pressure and surges other than the above.
Ductile Iron pipe is available for water working pressures greater than 350 psi.
Pipe is available with thicknesses greater than Pressure Class 350.
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| Specifications︰ | AWWA Standards
The following standards are available from the American Water Works Association:
ANSI/AWWA C104/A21.4 -- American National Standard for Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water
ANSI/AWWA C105/A21.5 -- American National Standard for Polyethylene Encasement for Ductile-Iron Pipe Systems
ANSI/AWWA C110/A21.10 -- American National Standard for Ductile-Iron and Gray-Iron Fittings, 3-inch through 48-inch, for Water and Other Liquids
ANSI/AWWA C111/A21.11 -- American National Standard for Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings
ANSI/AWWA C115/A21.15 -- American National Standard for Flanged Ductile-Iron Pipe with Ductile-Iron or Gray-Iron Threaded Flanges
ANSI/AWWA C116/A21.16 -- American National Standard for Protective Fusion-Bonded Epoxy Coatings for the Interior and Exterior Surfaces of Ductile-Iron and Gray-Iron Fittings for Water Supply Service
ANSI/AWWA C150/A21.50 -- American National Standard for the Thickness Design of Ductile-Iron Pipe
ANSI/AWWA C151/A21.51 -- American National Standard for Ductile-Iron Pipe, Centrifugally Cast, for Water
ANSI/AWWA C153/A21.53 -- American National Standard for Ductile-Iron Compact Fittings, 3-inch through 24-inch and 54-inch through 64-inch, for Water Service
ANSI/AWWA C600 -- AWWA Standard for Installation of Ductile-Iron Water Mains and Their Appurtenances
ASTM Standards
The following standards are available from the American Society for Testing and Materials
ASTM A674 – Standard Practice for Polyethylene Encasement for Ductile Iron Pipe for Water and Other Liquids
ASTM A716 – Standard Specification for Ductile Iron Culvert Pipe
ASTM A746 – Standard Specification for Ductile Iron Gravity Sewer Pipe
AWWA Manual on Ductile Iron Pipe and Fittings
The following manual is available from the American Water Works Association
Ductile-Iron Pipe and Fittings (AWWA Manual M41) – This manual provides both technical and general information to aid in the design, specification, procurement, installation, and understanding of ductile iron pipe and fittings. It is intended for use by utilities and municipalities of all sizes, as well as, design engineers and consultants.
CAN/CSA-B131.1, External Zinc-Coating of Ductile Iron Pipe.(ISO 8179-1985)
AS/NZS 2280 Ductile Iron Pipes and Fittings
AS 1832:2007 Malleable Cast Iron
AS 1831: 2007 Ductile Cast Iron
AS 1830:2007 Grey Cast
AS 1646 Elastomeric Seals for Waterworks Purposes
AS 3680 Polyethylene Sleeving for Ductile Iron Pipelines
AS 3681 Guidelines for the Application of Polyethylene Sleeving to Ductile Iron Pipes and Fittings
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| Standard Met︰ | DUCTILE IRON PIPE
Even Stronger and Tougher Than Cast Iron | Ductile Iron Pipe
The strength, durability, and long service life of Ductile's predecessor, gray Cast Iron pipe, are widely recognized. The first official record of Cast Iron pipe installation was in 1455 in Siegerland, Germany. In 1664, French King Louis XIV ordered the construction of a Cast Iron pipe main extending 15 miles from a pumping station at Marly-on-Seine to Versailles to supply water to the fountains and town. This pipe served the palace gardens for more than 330 years.
Cast Iron pipe was introduced to the United States as early as 1817, when it was installed in the Philadelphia water system. Today, more than 600 utilities (in the United States and Canada) have had Cast Iron mains in continuous service for more than 100 years. Additionally, at least 21 utilities have had Cast Iron mains in continuous service for more than 150 years.
Cast Iron Pipe Century Club (Downloadable PDF file)
Stronger and Tougher than Cast Iron for Unmatched Dependability
Ductile Iron not only retains all of Cast Iron's attractive qualities, such as machinability and corrosion resistance, but also provides additional strength, toughness, and ductility. It is lighter, stronger, more durable and more cost effective than Cast Iron.
Although its chemical properties are similar to those of Cast Iron, Ductile Iron incorporates significant casting refinements, additional metallurgical processes, and superior quality control.
Ductile Iron's improved qualities are derived from an improved manufacturing process that changes the character of the graphite content of the iron. Ductile Iron's graphite form is spheroidal, or nodular, instead of the flake form found in Cast Iron. This change in graphite form is accomplished by adding an inoculant, usually magnesium, to molten iron of appropriate composition during manufacture.
Due to its spheroidal graphite form, Ductile Iron has approximately twice the strength of Cast Iron as determined by tensile, beam, ring bending, and bursting tests. Its impact strength and elongation are many times greater than Cast Iron's.
Why Ductile Iron Pipe Defines Durability: The Stuff Legends Are Made Of
Since its introduction into the marketplace in 1955, Ductile Iron pipe has been recognized as the industry standard for modern water and wastewater systems. More than four decades of field experience have proven its strength, durability, and reliability for transporting raw and potable water, sewage, slurries, and process chemicals.
Find out why Ductile Iron Pipe is superior to substitute materials
Ductile's high degree of dependability is primarily due to its high strength, durability, and impact and corrosion resistance. Ductile Iron has minimum strength requirements of 60,000 psi tensile strength, 42,000 psi yield strength, and 10 percent minimum elongation. Designed and manufactured to the industry's most stringent standards, Ductile Iron pipe resists damage during shipping and handling, and, once installed, withstands the most demanding operating conditions, including water hammer, frozen ground, deep trenches, areas of high water table and heavy traffic, river crossings, pipe on supports, rocky trenches, and areas of shifting, expansive, and unstable soils. Additionally, numerous laboratory and field tests have proven that Ductile Iron's corrosion resistance is equal to or greater than that of Cast Iron, which has a service history that is unequaled by any other piping material.
Design of Ductile Iron Pipe
Corrosion Protection for Ductile Iron Pipe
Installation is simple. Unlike some pipe materials, Ductile Iron pipe requires no complex line-and-grade drawings or laying schedules. It can be installed in a wide variety of trench and standard laying conditions and can be easily cut in the field. Direct tapping, even in straight lines, doesn't affect its integrity. And, once installed, Ductile Iron pipe is virtually maintenance-free.
Tapping Ductile Iron Pipe
The pipe is manufactured in 18- or 20-foot nominal laying lengths and 3- to 64-inch diameters in a range of standard pressure classes and nominal wall thicknesses. Ductile Iron is furnished with several different types of joints and a wide variety of standard fittings is available without special order. Although Ductile Iron is usually furnished with cement-mortar lining, optional internal linings are also available for a wide range of special applications.
And Ductile Iron's generally larger than nominal inside diameters, combined with its high flow coefficient (C = 140), offers substantial savings on pumping and power costs over the life of the pipeline.
Hydraulic Considerations for Ductile Iron Pipe
Ductile Iron pipe is the kind of pipe that utility engineers dream of. Its reliability, derived from its strength and adaptability, give those engineers the peace of mind that can only come from using a product that they know will be there when duty calls. They know that the good service they demand for their customers follows directly from their decision to install Ductile Iron pipe ... the Right Decision
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