Ductile Iron Pipe&Fittings
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).
Ductile iron pipes are simple to joint, can be laid in all weather conditions and often without the need for selected backfill. Its high safety factor and ability to accommodate ground movement make it the ideal pipeline material for a wide range of applications.
Ductile iron pipes have a number of advantages over other pipe materials:
Easy to install
Full range of accessories are widely available
Suited to a host of applications both above and below ground
Strength of the material allows it to withstand significant internal pressure and also makes it less susceptible to impact damage
Facilitating high resistance to loadings, pressure and vacuum with high tensile strength,
Enabling high resistance to corrosion,
Not requiring cathodic protection,
Less operating cost since cast pipes have larger nominal diameter than polyethylene pipes.
Being the best pipe in case of an earthquake, with its ability of resilience and resistance to impacts without deformation,
Long product life, exceeding 100 years,
Preserving the quality of water with healthy interior coating.
Ductile Iron Pipe:
Stock and supply a comprehensive range of Ductile Iron fittings in diameters DN80-1200 to BS EN 545 (Water) and BS EN 598 (Sewerage) standards, with a number of jointing options to meet the requirements of the application.
The principle joint types offered include:
Self Restraining / Anchored
The Fittings range includes, but is not limited to:
Bends (90′, 45′, 22.5′, 11.25′)
Equal and Reducing tees
Radial (Swept) tees
45′ Angle Branches
Tapers (Concentric and Eccentric)
Double Flanged ‘Spool’ pipes
|Pipes||Ø80 – Ø2200 mm (L = 6m, and 8m)|
|Fittings||Ø80 – Ø2200 mm|
|Pipes||C and K classes|
|Fittings||Class K10 – K12|
|Push-on Type||TYT Type|
|Pipes||for Ø80 – Ø300 mm||50 bar / 40 bar|
|for Ø350 – Ø600 mm||40 bar / 30 bar|
|for Ø700 – Ø1000 mm||32 bar / 25 bar|
|for Ø1100 – Ø2600 mm||25 bar|
|Fittings||for Ø40 – Ø300 mm||25 bar (*)|
|for Ø350 – Ø600 mm||16 bar|
|for Ø700 – Ø2600 mm||10 bar|
|(*16 bar for fittings with PN10 flanges)|
ISO 2531：Ductile iron pipes, fittings and accessories for pressure pipelines
|Pipe||Ductile iron casting, minimum 420 MPa tensile strength|
|Internal Lining||Concrete Lining, ISO 4179|
|Socket Internal Lining||200 micron epoxy coating|
|External Coating||70 micron bitumen coating on 200 gr/m2 zinc coating, ISO 8179
70 micron bitumen coating on 400 gr/m2 Zn-Al coating (optional)
|Fittings||Ductile iron casting, minimum 420 MPa tensile strength|
|Internal Lining||Concrete Lining, ISO 4179
Epoxy Coating (optional)
|External Coating||70 micron bitumen coating on 200 gr/m2 zinc coating, ISO 8179
200 micron epoxy coating on 400 gr/m2 Al-Zn coating
|General Design||ISO 2531
|Socket and Gasket||DIN 28603
|Flange Dimensions||EN 1092-2
|Internal Lining||ISO 4179|
|External Coating||ISO 8179|
|Polyethylene Coating (Optional)||ISO 8180|
BS EN 545：Ductile iron pipes, fittings, accessories and their joints for water pipelines
BS EN 598：Ductile iron pipes, fittings, accessories and their joints for sewerage pipelines
BS EN 969：Ductile iron pipes, fittings, accessories and their joints for gas pipelines (DN 80 ~ 600mm)
BS EN 7892：Specification for coats on cement motor lined ductile iron pipes and fittings
ISO 8179-1：Ductile iron pipes-External Zinc-based coating, Part1：Metallic Zinc with finishing layer
ISO 8179-2：Ductile iron pipes-External Zinc-based coating, Zinc rich paint with finishing layer
ISO 4179：Ductile iron pipes and fittings for pressure and non-pressure pipelines-cement motar linings
BS EN 6920：Suitability of non-metallic products for use in contact with water intended for human consumption with regard to their effect on the quality of water. Methods of test
Pipes Standard pipes with flexible joints s available for C-class, z & K12. z Standard pipes with flanges screwed or cast-on shall be class K12. z Standard pipes with flanges welded-on shall be class K9. The standard lengths and thickness of pipes are shown in our catalogue. Lengths of pipes other than those shown may be supplied by agreement between the purchaser and the manufacturer and shall be deemed to z comply with the requirements of this specification. In the case of centrifugally cast pipes, the increase or decrease, in the thickness of the pipe wall shall be obtained variation of the internal diameter only.
All standard fittings shall be class K12
Ductile iron pipe
Annealed ductile iron pipe
Cast ductile iron pipe
Gray iron pipe
Inner anti-corrosive layer — cement lining
Product properties of ductile cast iron pipes – internal anti-corrosion layer of ductile cast iron pipes
spray zinc ductile iron pipes are centrifugally coated with cement mortar protective layer.This protective layer is made of high quality and strictly tested cement materials, and is coated by a computer-controlled cement slurry mixing system and a computer-controlled cement inner coating machine.
Cement lining quality in line with the international standard ISO4179, ensure that the mortar is very firm and dense, smooth, cast iron surface adhesion performance is good, not off, not fouling, and uniform thickness, to ensure that each inch of the internal pipeline has been meticulously protected.
Anti-corrosion coating – spray zinc
The zinc-sprayed layer of ductile iron pipe can play an active role in protecting the pipe through the electrochemical action of zinc and iron.
Each Hyun’s ductile iron pipe surface is the use of international advanced high voltage electric spray process, the minimum amount of spraying zinc is not less than 130g/m2, in line with the ISO8179 standard.
（1）Formation of a stable protective layer In contact with the soil, the metal zinc is gradually and slowly transformed into a close, cohesive, continuous layer of zinc salts.
The outer layer of bituminous paint (sealing the pores) acts as a film, converting the zinc into insoluble zinc salts instead of soluble zinc hydroxides.
（2）One of the main features of the zinc spray coating is the ability to automatically repair the protective coating at the damaged area to protect the integrity of the protective coating.
Zinc ions migrate to the site of injury by sealing pores (asphalt paint) to fill the wound and turn into stable, insoluble zinc compounds.
Types of Ductile Iron Pipes Packing:
If the pipes are ≤DN300, we will use bundles with steel strips, transportation is organized through bulk shipping.
If the pipes are ≥ DN300, there will be no such packing. As for container shipping, we will pack in bulk.
Modes of Ductile Iron Pipes Transportation:
Container (loaded at factory or seaport)
Container Transportation is suitable for pipes ≤DN300. Our 5.6-meter ductile iron pipes are designed and produced fit for 20-foot container loading. Of course we can load 6-meter pipes in 40 or 45-foot containers.
The advantages of container transportation lies in that we are more professional in factory loading and these containers are shipped by liner ship so that the clients may get the goods on time and then fasten the installation. It is usually more costly than bulk shipping, which is one of its weaknesses.
2.Bulk Carrier Transportation
For big order or big-sized pipes, we usually arrange shipment by bulk carrier. Pipes are carried to the seaport in trucks and then loaded into bulk carrier at the seaport.
The advantage bulk carrier transportation is that the cost of transportation is lower than that of container shipping. And it is suitable for large quantity and big-sized pipes, however, the shipping time may be unstable. Occationally we were delay late in delivery just because bulk carrier shipment can’t achieve on- time ETA or ETD. That can be viewed as its disadvantage.
Packing and Transportation of Ductile Iron Pipe Fittings
Ductile Iron Pipe Fittings Packing:
For D.I fittings ≤DN300, we arrange packing in timber cage or wooden cartons. For those ≥DN300, we arrange packing in wooden pallets.
Ductile Iron Pipe Fittings Transportation:
We transport D.I fittings in container. We choose 20 or 40 feet container depending on the size and specifications of the fittings. If D.I. fittings are transported together with the D.I. pipes, transportation mode will be decided according to those of the pipes.