The inside diameters are as given in table 1. Fastite Joint Pipe: Fastite Joint Push-Bar Pipe: Mechanical Joint Pipe: Coupling Gland Joint: Earthquake Joint System: Fastite Joint Pipe With Fast-Grip Gasket: Fastite Joint Pipe With Amarillo Fast-Grip Gasket: Field Flex-Ring Joint Pipe: Flex-Lok Ball Joint Pipe: Flex-Ring Joint Pipe: Grooved and Shouldered Joints: Lok-Ring Joint Pipe Above 1.7% carbon, the carbon cannot all be dissolved in the iron structure and consequently solidifies in the form of a secondary phase, either as graphite (pure C), or iron carbide (Fe3C). Ductile Iron pipe is a centrifugally cast product. Ductile iron pipes and fittings have high corrosion resistance, are lined with cement or resins, and usually coated with zinc plus bitumen paint, which solves the problems of corrosion that grey iron pipes or steel pipes can’t solve. Find out why Ductile Iron Pipe is superior to substitute materials. The standard nominal sizes DN of pipes … The corrosion resistance of Ductile iron pipe has been proven in a wide variety of accelerated tests to be at least the equal of gray cast iron. Ductile Iron exhibits a proportional or elastic stress-strain relationship similar to that of steel but which is limited by the gradual onset of plastic deformation. Ductile Iron Pipe. Ductile iron is also called as nodular iron or SG iron. Ductile iron pipes are available in different sizes, lengths and types. They can be obtained in 3″ – 24″, 3″ – 36″ or 3″ – 64″ options, depending on the manufacturer. Ductile iron is made by adding a closely controlled amount of magnesium alloy to a molten iron of low phosphorous and low sulfur content.

At low temperatures, brittle failure occurs by the formation of cleavage cracks, producing a facetted, shiny fracture surface. for the Thickness Design of Ductile Iron Pipe (ANSI/AWWA C150/A21.50) has evolved. Therefore, we filled some normal standards to show the reasonable range to ductile iron. Ductile iron has greater strength and ductility then gray iron. Ductile Iron, like most ferrous materials, exhibits fracture behaviour which varies according to composition, microstructure, temperature, strain rate, and stress state. This type of pipe is a direct development of earlier cast iron pipe, which it has superseded. The difference between cast iron and ductile iron is the graphite form. cast iron or ductile iron: 1.7 to 5% C Below 1.7 % carbon, solidification produces an austenitic single phase material, with the carbon present in the structure in solid solution. Design Basis The basis of the design standard for Ductile Iron pipe is the long-established fact that Ductile Iron pipe, subjected to Ductile's high degree of dependability is primarily due to its high strength, durability, and impact and corrosion resistance. Ductile iron pipe is lighter, stronger, and more durable than cast iron. Ductile iron pipes overview.

These weights are based on minimum class (thickness class 51 for 3" and 4" and class 50 for 6" through 54") ductile iron pipe with minimum thickness standard cement lining as specified in awwa c104 and on weight of water of 62.4 Pounds per cubic foot. Its chemical components did not have strict range for many material standards, however, its range should be useful for buyers to evaluate the quality of cast iron. Please remember the chemical components are only a reference, … The Modulus of Elasticity for Ductile Iron, measured in tension, varies from 23.5 to 24.5 x 10 6 psi (162 - 170 GPa). Pipe is the recognized leader in highly engineered pipe products for water and wastewater systems. Ductile Iron Pipe Ductile iron is often used as a pipe as the spheroidal or nodular nature of the graphite that makes ductile iron twice the strength of cast iron. This new standard included considerations to the inherent strength advantage of ductile iron over its cast iron predecessor. No more thorough and comprehensive standard design procedure exists for any piping material.

Ductile Iron Chemical Components. Ductile iron pipes are available in a range of diameters from 80mm to 1600mm and are suitable for both potable water transmission and distribution (in accordance with BS EN 545) and sewerage (in accordance with BS EN 598).

In ductile iron, the graphite form is spheroidal, or nodular; in cast iron, it is in a flake form. Ductile Iron has minimum strength requirements of 60,000 psi tensile strength, 42,000 psi yield strength, and 10 percent minimum elongation. Ductile Iron Pipe. “Thickness Class” Vs “Pressure Class.” When Ductile Iron Pipe was introduced to the market in 1965, replacing “Cast” or “Gray” iron, pipe manufacturers reached a consensus that there should be a standardized protocol for determining wall thickness.. Applications of Ductile cast iron. For over 100 years U.S. Pipe has supplied the critical components to ensure our nation's water and sewer infrastructure is built to last. U.S. Ductile Iron Pipe: It is a pipe made of ductile cast iron commonly used for potable water transmission and distribution. A controlled amount of molten iron is introduced into the rotating mold, which generates a centrifugal force that holds the iron …

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