Ductile iron pipe roughness industrial professionals. Pipe dimensions are standardised to the mutually incompatible awwa c151 u. Subsequently, a method is proposed to assess the condition of a ductile iron pipe, based on the geometry of corrosion pits of several samples extracted along the pipe. Ductile iron pipe natural andor manmade ground movements, is the main reason for water supply damages. The graphite and carbon contained in cast iron occur as flakes. Ductile iron castings manufacturer ductile iron foundry.
Research of earthquake resistant ductile iron pipe erdip for fault crossing k. As such, it replies less on side fill soils to support external loads. Conservative assumptions, along with an explicit safety factor, have been employed to assure a conservative design with an adequate overall safety factor. American also subscribes to nsfs listing program for products under. The combination of the conservative, thrust restraint equations and updated soil information is provided in the design handbooks and computer software available from ebaa free of. As weve already compared ductile iron castings to gray iron castings we thought wed compare ductile iron and cast steel across a variety of properties to help determine which alloy is better for a given application. Saintgobain pam leader of comprehensive ductile iron pipe and fittings for water and sewage networks. Pipe roughness coefficients table charts hazenwilliams.
This program is based on the equations and procedures found in the dipra brochure design of ductile iron pipe on supports. Cast iron pipe has long been the standard material for conveying water and sewage in municipal, utility and industrial piping systems. The pipe on supports calculator provides the designer with a way to determine support dimensions and the class of pipe needed to control beam deflection, beam. In 1989 ebaa iron embarked on a soil study to determine actual soil properties on ductile iron, ductile iron wrapped with polyethylene, and pvc pipe surfaces. We sale and export ductile iron pipes, all kinds of joints from china. Comparison of physical properties of gray and ductile iron.
Pipes, pipe fittings, pipe couplings, spheroidalgraphite castiron, castiron pipelines, sewers, manholes, sewerage, drainpipes, drainage, dimensions, size, colour codes, temperature, pressure, performance, mechanical properties of materials, marking, coatings, dimensional measurement, tensile testing, bend testing, pressure testing, chemicalresistance tests, wear tests, effluents sewage. Cast iron deterioration with time in various aqueous salt solutions has also been studied 15. It is organized at the top level into two basic domains one for pipe parts, such as cylindrical or rectangular pipes, and another for structure parts, such as. Previous works 1, 2 on ductile cast iron showed that the main factors affecting the mechanical properties are metallurgical structures. This is justified by the need to withstand the numerous stresses on the pipelines during installation, but also and above all, over the years pipeline design calculation.
For more specific values, follow the links immediately below. Comparison of mechanical properties of cast iron with steel castings. In terms of environmental impact, several studies have compared ductile iron pipe s impact on the environment with that of other pipe materials. The pipe shall be provided with suitable joints, such as pushon or other types of joints that prevent lateral displacement, but plainend pipe for use with suitable couplings may be furnished. More specificaly, id be grateful to know the value from ductile iron pipe roughness in case of a new pipe and, lets say, 10 years old. Ductile iron pipe internal bore is always greater than nominal diameter. Ductile cast iron spun 1960s why choose ductile iron pipes. Classification of ductile cast iron specimens based on. Research of earthquake resistant ductile iron pipe erdip.
To add a material property to a part in part builder. In january 2017, cape g retained the services of pure technologies to field verify and further assess the condition of the riverfront force main, a threemile pipeline comprised of 20 and 24inch ductile iron pipe dip, with a few replacement sections of hdpe. Ductile iron is a development of an earlier cast iron pipe that has superseded due to its many advantages as follows, ductile iron has excellent mechanical properties under the influence of forces, such as high resistance to tensile stresses and high impacts. The following table has been compiled to assist with the selection of the ideal grade of cast iron for your castings. What is the difference between ductile iron pipes and. National standard for the thickness design of ductile iron pipe ansiawwa c150a21. Impact resistance ductile irons impact properties are microstructure dependant. The purpose of this standard is to provide the minimum requirements for polyethylene sheet and tubes to be used for external corrosion protection of buried ductileiron pipe, fittings, and appurtenances. Comparison of ductile iron vs steel penticton foundry. Ductile iron pipe, a product of advanced metallurgy, offers unique properties for conveying water under pressure, and other piping uses. The company is responsible for the development of bellless mt push pipe and gs push pipe used for pipe bursting, microtunneling, or sliplining. Any material printed or downloaded by you from this site, including, without limitation, any text, files, images, software, and data accompanying the foregoing is licensed to you by u. Design of ductile iron pipe on supports d esign procedures for ductile iron pipe in normal underground service have been well established. Jerry regula, national product engineer, mcwane ductile.
The standard design considers hoop stresses in the pipe wall due to internal hydrostatic pressure as well as bending stresses and deflection in the pipe due to external loads of earth and traffic above the. Installation guide for ductile iron pipe mcwane ductile. Comparison of physical properties if cast iron with steel castings. Printing or downloading the material does not transfer title to the material, or any intellectual property rights therein, to you and all rights not. About the part catalog and parts lists for pipe networks. Is there s different standard for di pipe fittings in the us than in the ukeu. Manufacturing process of ductile pipes by the process of casting. This iron has combined properties of grey iron and malleable iron which makes it one of the strongest forms of iron in the world.
Ductile irons corrosion resistance can be improved by understanding the corrosion mechanism and alloying the material appropriately. Continuous testing and field experience have brought the production and use of ductile iron pipe to maturity. In 1664, french king louis xiv ordered the construction of a cast iron pipe mai. Ductile iron tee pipe solidworks 2017 configurations 2 to 48 the computeraided design cad files and all associated content posted to this website are created, uploaded, managed and. Pipe has supplied the critical components to ensure our nations water and sewer infrastructure is built to last. The strength, durability, and long service life of ductile iron pipe s predecessor, gray cast iron pipe, are widely recognized.
Anyway, im interested to find a roughness database from main piping materials. Designed and manufactured to the industrys 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. It is illegal to install products that are not lead free in accordance with us federal or other. The real life expectancy of cast iron pipe is unknown, but is usually estimated at 100 years or more. Condition assessment of a ductile iron force main using. Ductile iron has greater strength and ductility than gray iron. Well take a look at tensile strength, ability to absorb shock, weldability, abrasion. Physical properties of ductile iron and alternative materials. One of the most important reasons for the success of ductile iron pipe is that, like gray iron pipe before it, it is the subject of the most extensive series of product standards in the pipe industry. With more than five decades of outstanding field experience, ductile iron pipe is widely recognized as the industry standard for modern water and wastewater systems. This mode of solidification is obtained by adding a very small but specific amount of magnesium to molten iron. Ovalisation in ductile iron pipe design pipe ring deflection. The graph bars on the material properties cards further below compare ductile cast iron to. Pam pipelines are designed to withstand high pressures, generally much greater than the values usually encountered in the networks.
One of the most important reasons for the success of ductile iron pipe is that, like gray iron pipe before it, it is the subject of the most extensive series of. Moreover, it requires only simple jointing details which allows for a faster rate of construction. These properties are further enhanced by control of the chemical analysis and heat treatment of the metal matrix. Independent lab verification that fittings meet applicable chemical and physical properties. Numerous pipe tables are included in the default installation of the programs, and. Tempered ductile iron has excellent mechanical properties such as tempering reduces the strength and hardness and increases the. This is calculated in a similar way as the flexible steel pipes described in that section of the site. Ductile iron pipe is pipe made of ductile cast iron commonly used for potable water. Ductile iron pipes, fittings wholesaler, exporter, supplier. Hydraulic flow characteristics are not altered by pressure increases or decreases an increase in working pressure.
Ductile irons corrosion resistance is superior to unalloyed steel, and even highly alloyed steels in certain environments. Ductile iron, also referred to as nodular iron or spheroidal graphite iron, was patented in 1948. Ductile iron pipes and fittings bim object definition from nbs. Fonderie saguenay are a jobbing shop specializing in producing components in materials such as gray iron and ductile iron.
Pipe is the recognized leader in highly engineered pipe products for water and wastewater systems. Miyajima abstract this study proposes a method for designing a water pipeline system against fault displacements by using earthquake resistant ductile iron pipe erdip. The awwa standards committee a21 on ductile and gray iron pipe and fittings was. Operating pressure ductile iron performance saintgobain pam uk. For watermain pipe size less than 600mm, ductile iron is normally used because internal welding for steel pipes below 600mm is difficult to be carried out. The first official record of cast iron pipe installation was in 1455 in siegerland, germany. Hence, it is not necessary to achieve highlycompacted soils for ductile iron pipes for sustaining external loads. Cast iron and ductile iron have contrasting physical properties caused by differences in their microstructures. This paper discusses the challenges associated with implementing the inspection plan and the results of the inspections including those obtained by using the gwt on the ductile iron pipe. Submittal buttons and cover page entry will be displayed once an item has been selected. Those producers who resisted ductile iron were eventually closed or purchased. Comparison of mechanical properties of gray and ductile. During testing of the force main, gwt examinations were conducted inside eight different excavations to screen approximately 319 total feet of pipe. One of the most important reasons for the success of ductile iron pipe is that, like gray iron pipe before it, it is the subject of the most.
For example when i measure a 90deg short radius bend in mep global ductile iron pipe and fittings for a. Cl52 ductile iron fastite double cement lined pipe 4006535 at ferguson. Which one is better, ductile iron pipes and mild steel pipes. Ductile iron pipe and fittings saintgobain pam international. Astm international iron and steel products standards. Ductile iron, also referred to as nodular cast iron or spheroidal graphite iron, has an unusual combination of properties obtained because the graphite occurs as spheroids rather than flakes as in gray iron. Ductile iron pipe, corrosion pits, soil properties, corrosion pit. A37718 standard index of specifications for ductile iron pressure pipe a380a380m17 standard practice for cleaning, descaling, and passivation of stainless steel parts, equipment, and systems a381a381m18 standard specification for metalarcwelded carbon or highstrength lowalloy steel pipe for use with highpressure transmission systems. Comparison of hdpe and ductile iron pipes for drinking water supply networks in future smart cities through lca and lcc. Use this procedure to add the material property to a part family in the part catalog.
Ductile iron pipe k type joint or mechanical joint accessory. Tensile and yield strengths vary widely with different microstructures. Through knowledge gained by our dedicated research centre in areas such as soil corrosion phenomena, our ductile iron pipelines have the latest coating technologies and often exceed minimum industry standards. Reexamination of traditional conventions yehuda kleiner, balvant rajani and dennis krys national research council of canada, institute for research in construction. The pipes are labeled as ductile iron, but when you go to the pipe properties or look at the structures they connect to, they are reinforced concrete, thus i have to change them each, one at. Those properties allow it to be used effectively in a wide variety of industrial applications, including pipe, automotive components, wheels, gear boxes, pump housings, machine.
Ductile cast iron behaves elastically over a considerable stress range in both tension and compression. Ductile iron pipelines are described by characteristics such as jointing, external finish and internal finish. Ductile iron pipes normally possess thicker pipe walls and are generally stiffer than steel pipes. In ductile irons, graphite is in the form of nodules rather than flakes as in grey iron. Generally, high nodule count indicates good metallurgical quality, but there is an optimum range of nodule count for each section size of casting, and nodule counts. Various soil characteristics were investigated to determine their impact on the geometric properties of the corrosion pits. Conventional ductile iron contains a mix of pearlite and ferrite in the matrix surrounding the nodules. Having the material property available for parts enables you to use labeling features to add text to identify the type of material used for the pipe.
Pipe table listing engineered software knowledge base. For example, you can configure the material property to display text such as pvc, ductile iron, or corrugated steel. Ductile iron tee pipe solidworks 2017 3d cad model. American ductile iron pipe promotes the use of ductile iron pipe for several trenchless technology installation methods, including pipe bursting and horizontal directional drilling hdd.
Standard specification for ductile iron culvert pipe. Manufacturing process of ductile pipes by the process of. This mix, depending on different cooling rates throughout the casting, can cause large ranges in mechanical properties like hardness. Typically the piping is going to have something on the end of it all the time, even if its just a blind flange. Ductile iron is not a single material but part of a group of materials which can be produced with a wide range of properties through control of their microstructure. An example use may be within a fire hydrant system.
Operating pressure ductile iron performance saintgobain. Ductile iron pipes have been used in north america since the late 1950s. Comparison of the mechanical properties of steel and ductile. Hydraulic flow characteristics are not altered by pressure increases or decreases. The high temperature corrosion of two ductile cast irons simo and niresist alloys in synthetic diesel and gasoline exhaust gases has also previously been reported 14. Ductile iron archives pure technologies pure technologies. The autocad civil 3d part catalog contains definitions for all the pipe network parts that you can insert into a drawing. This standard also may be used for polyethylene encasement of fittings, valves, and other appurtenances to ductileiron pipe systems. The nominal bore of ductile iron pipe is the minimum bore you can expect for a given size. The perfect ductile iron pipe for robust and flexible water distribution networks in all situations. Comprised of ductile iron and fabrication, our comprehensive selection. This strong, safe, and reliable product has stood the test of time. D iron mj american ductile iron pipe standard pressure classes.
Ductile iron pipe due to the use of socket connection, and the general use of welded steel pipe, and both pipe diameter and diameter are inconsistent, so the need for special methods for connection. Select the pdfs you want to add to your submittal package from the list below, or click each link for individual pdfs. Australia opted for a soft conversion from imperial units to metric, published as asnsz 2280, with the physical outer. Tyton joint ductile iron pipe and restrained joint ductile iron pipe. Comparison of the mechanical properties of steel and ductile iron pipe materials brent keil1, jack devletian2 abstract water infrastructure engineers commonly evaluate a variety of pipe materials to determine the most appropriate solution for a particular application. Processes and properties with conversion to ductile iron, pressure pipe production became an even more specialized process. Ductile iron pipe is widely recognized as the industry standard for modern water and wastewater systems. D the first design check is on the ovalisation or deflection of the ductile iron pipe ring under load. The common defining characteristic of this group of materials is the shape of the graphite.
This is justified by the need to withstand the numerous stresses on the pipelines during installation, but also and above all, over the years. Pdf static mechanical properties of ferritic and pearlitic. Fluid flow table of contents hydraulic and pneumatic knowledge fluid power equipment. A century ago, dedicated american engineers installed iron pipe to create the countrys water systems. Ductile iron pipe in the developed world is normally manufactured exclusively from recycled material including scrap steel and recycled iron. Ductile iron pipe roughness posted in industrial professionals. As the name suggests they are more ductile than most cast irons and have similar properties to grey irons i.
Which one is better, ductile iron pipes and mild steel. Ductile iron owes its remarkable mechanical properties to the spheroidal shape of its graphite. Materials used in the production of pipes and fittings, have to be ductile, flexible and resistant to impacts in order to minimize the effect of these movements on networks. The ductile irons discovery in 1948 gave a new lease on life to the cast iron family. To promote the production and application of ductile iron. Pressure class ductile iron pipe in type 5 trench is illustrated. Invented in 1943, ductile iron is a modern iteration of cast iron.
After a decade of intensive development work in the 1950s, ductile iron had a phenomenal ninefold increase in use as an engineering material during the 1960s, and the rapid increase in commercial. Miyajima abstract this study proposes a method for designing a water pipeline system against fault displacements by using earthquake resistant ductile iron pipe. This versatile platform provides value across multiple disciplines, industries and during all stages in the lifetime of a fluid piping system. Standard wall thickness and weight values of pushon joint pipe are given. This mode of solidification is obtained by adding a very small but specific amount of magnesium to. Mechanical and structural properties of ductile cast iron. In fact, these cast irons are characterized both by a high castability and by high toughness values, combining cast irons and steel good properties. Pdf ductile iron pipes have been used in north america since the late 1950s. Ductile iron castings manufacturer ductile iron foundry usa. Although 1 m of ductile iron pipe is more expensive. Weights published in this catalog are for shipping. The respective software to be used with ms windows 95 complete with. The properties of ductile cast iron include nine common variations. Ductile iron pipe size dips and dimension data pe4710.
Ductile iron pipes, fittings, accessories and their joints for water or gas applications. The oldest operating cast iron main is that at versailles, france, installed in 1664. Nodule count, expressed as the number of graphite nodulesmm 2, also influences the mechanical properties of ductile iron, although not as strongly and directly as graphite shape. The software features five analytical tools that can be utilised throughout the planning. Those properties allow it to be used effectively in a wide variety of industrial applications, including pipe, automotive components, wheels, gear boxes, pump housings, machine frames for the windpower industry, and many more.
Emj sells durabar brand 654512 ductile iron, which is good for making electromagnets. Corrosion resistant, for longevity in water and sewage systems, and machinable, for ease in field modifications, ductile iron pipe surpasses its competitors in terms of durability, strength and ductility and is lighter and more costeffective than cast iron. Ductile iron is made using a combination of many strong metals like carbon, silicon, magnesium, phosphorous, sulphur, iron and copper etc. Effect of tempering temperature and time on strength and. When i create a new pipe network, and select ductile iron pipe from the catalogue, and draw in my network. In a previous research report stefanescu et al, in print, the static mechanical properties of horizontalplates thin ductile iron castings 1. The dimensions and the drilling of the flanges shall be in accordance with the.
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