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Irontite® Ductile Pipe

Since its introduction to Australia in the 1950’s Ductile Iron Pipe has been recognised as an industry standard for water and wastewater systems. Over 60 years of field experience has proven its strength, durability and reliability. The Ironite® Ductile Iron Pipe range is manufactured by Jindal SAW Limited, a leading manufacture of ductile iron pipelines with over 30 years of experience and a history of continuous reinvestment into research and development, staying at the forefront of new technology and design.

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Our Irontite® Ductile Pipe range

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With a wide range of internal linings and external coating options, Irontite® pipe can be used above and below ground in the following applications:

  • Potable water
  • Recycled water
  • Sewage
  • Irrigation water
  • Bore water
  • Slurries

The comprehensive range of pipes, fittings and valves up to 750mm offers a pipeline solution for all applications.


Irontite® Ductile Iron Pipes have been a popular choice for pipeline construction due to the materials advantages and characteristics.

Features Benefits
High strength Ductile iron provides a pipe with high hoop and axial strength. Irontite® ductile iron pipes can withstand severe stresses caused by heavy external soil, traffic, groundwater and construction loads. This includes internally by operating and high transient pressures.
High beam strength Ductile iron is recognised for its capacity to withstand beam loads in above ground installations.
Corrosion resistance Irontite® ductile iron pipe is manufactured with an Zn-Al primer (mean mass 400 gm/m²) + blue liquid epoxy (min. 8 µm DFT) providing increased corrosion protection and can be buried without sleeving in soils with a resistivity lower than 500 Ω cm (please check with local water authority). Polyethylene sleeving may be applied during installation for further enhancement protection in aggressive environments. Some specialist applications may require a higher level of corrosion protection such as polyurethane.
High impact resistance Whilst care should always be taken to minimise the possibility of damage, Irontite®’s high toughness means it is able to withstand the rigors of on-site handling in difficult terrain and abnormal service conditions.
Flow characteristics Irontite®’s relatively low coefficient of friction (Colebrook White roughness k=0.03mm) can result in high flow capacity, low head loss, low pumping costs, and significant energy savings over the life of the pipeline.
Tremendous burst strength Irontite®'s tremendous burst strength makes it ideally suited for high-pressure applications. It also provides an additional safety factor against water hammer.
Maintenance free Years of experience in operating systems throughout the world have demonstrated that, once installed, zinc coated ductile iron pipes and polymeric coated fittings require little, if any, maintenance over the life of the pipeline when installed in accordance with the manufacturer’s recommendations.
Jointing Irontite® ductile iron pipe is available with a spigot x socket rubber ring joint for ease of assembly and jointing. Due to their high angular deviation, there is the potential to reduce the number of fittings increasing the rate of installation.
Material Options

Material Options

Mechanical Properties
Property Value & Unit
Density (Specific Gravity) 7.1
Ultimate tensile strength 420MPa
Yield Strain 10%
Tensile Modulus 170GPa
Hardness Brinell 230
Poisson’s Ratio 0.3
Design Stress 140MPa
Ring bending modulus (3 mins) 165MPa
Ring bending modulus (50 yrs) 165MPa
Thermal Properties
Property Value & Unit
Coefficient of Thermal Expansion 12.5 x 10³/°C
Flammability Non-Flammable
Allowable Operating Temperature 50°C
Allowable Pressure Ratings

Allowable pressure rating table for fitting used within a PN20 or PN35 pipeline with integral joints

DN Allowable Operating pressure -MPa Allowable Maximum operatiing Pressure - MPa Allowable Site Test Pressure - MPa
100 - 750 3.5 4.2 4.38
100 - 750 2.0 2.4 2.50


Allowable pressure rating table for fitting used within a PN35 pipeline with flange joints

Flange to AS4087 DN Allowable Operating pressure -MPa Allowable Max Operatiing Pressure - MPa Allowable Site Test Pressure - MPa
PN16 100 - 750 1.6 1.92 2.0
PN35 100 - 750 3.5 4.2 4.38
Product Details

Product Details

Standards and Approvals

Irontite® Ductile Iron pipes are manufactured to the Australian Product Standard under third party accreditation quality assurance systems confirming to ISO 9001.

  • AS/NZS 2280 “Ductile iron pipes and fittings”
  • AS/NZS 4020 “Testing of products for use in contact with drinking water”
  • AS 1646 “Rubber joint rings for water supply, sewerage and drainage purposes”
  • AS 1831 “Spheroidal or nodular graphite iron castings”
  • AS/NZS 4087 “metallic flanges for waterworks purposes”
  • ISO 16132 “Ductile iron pipes and fittings, seal coats for cement mortar linings”

Polyethylene sleeving:

  • AS 3680 “Polyethylene sleeving for ductile iron pipes”
  • AS 3681 “Guidelines for the application of polyethylene sleeving to ductile iron pipelines and fittings”

Irontite® Ductile Iron pipes have been appraised by Water Services Association of Australia (WSAA) – PA 1802.

Rubber Ring Seal

The Irontite® elastomeric gasket provides a leak tight flexible jointing system. EPDM T-type elastomeric gasket is used for the jointing system, unique to the Jindal SAW pipe. These rings can be easily identified by the green markings on the face of the seal. The EPDM rubber ring seal conforms to AS 1646.

Joint Deflection

The elastomeric seal joint deflection recommended by Irontite® DI pipes is shown in the table below and conforms with AS/NZS 2280. The effective length of each pipe is 5.5m.

Recommended joint deflection and offset:

Nominal Size DN Recommended Joint Deflection, Ѳ (Degrees) Offset, δ (m) Radius, R (m)
100 - 300 3.5 0.34 90
375 - 600 2.5 0.24 126
750 1.0 0.10 315
Colour and Markings

All Irontite® Ductile Iron pipes are marked in accordance with the requirements of AS/NZS 2280:2014

  • Manufacturers name: Jindal SAW Australia/NZ
  • Iplex logo and Irontite® branding
  • Nominal size: DN 100 to DN 750
  • Pressure classification PN20, PN35, FC
  • Number of the standard AS/NZS 2280

Pipes not suitable for drinking water are marked Not suitable for drinking water continuously along the length of the pipe with legible lettering of minimum 20 mm height.

Other marks include application limit of LPS, batch numbers for traceability and codes for manufacturing location.

In addition, the PN20, PN35 and Flange Class pipe has green, red and blue colour coding respectively, on the socket end.

Environmental Credentials

Jindal SAW manufacturing plants have been certified as compliant to ISO 9001 by Bureau Veritas certification.

SO 18001:2007 Certification confirms Manufactured to Occupational Health and Management Systems.

In addition, the manufacturers have been certified to ISO 14001:2004 Environment Management System — Requirements and ISO 14064.1:2006 Greenhouse gases —Specification with guidance at the organisation level for quantification and reporting of greenhouse gas emissions and removals to demonstrate assurance to sustainable development and as a guarantee of product and services that meet the requirements of respect for the environment by quantifying, monitoring, reporting and verifying greenhouse gas emissions.

All ductile iron pipes are 100% recyclable.

Restrained Joints

Restrained joints are used to mechanically arrest the axial movement of a pipeline, making them ideally suited for installations over loose soil or marshy land where one cannot provide anchor blocks at tee points or bends, when varying topographies or gradients are encountered, or in high-pressure pipeline applications. Jindal SAW offer two types of restrained joints - the MRJ and the JSAW Lock Pipe.


This joint comprises of an assembly of two pipes (socket and spigot) with glands, split ring and a set of hook bolts, nuts and washes. The spigot end of the pipe is to be provided with a weld bead. The socket of the pipe to be joined will have a circumferential projected collar.

JSAW Lock Pipe

Critical to restraining pipe axial movement in major underground water piping systems, JSAW-LOCK jointing technology offers an easy to install, superior pipeline restraint solution.

The system is a restrained semi-flexible push-in-joint connecting socket and spigot ductile iron pipes (AS and ISO sizes). The complete assembly is self-restraining and thus aids in transferring thrust forces along the entire system – eliminating the need for thrust blocking alternatives.

JSAW’s Joint locking system is sustainable within high pressure applications by the way it automatically deflects high angular surges. With the JSAW LOCK joint, the system is pre-designed to cater for pressures between 100-25 bar in DN100-DN1800 respectively. Lock Joints are custom built to project specifications to confidently withstand pressure surges over a long life-time.

Irontite® Pipe Sizes

Irontite® PN35 cement lined pipes (Spigot x Socket)

DN Approximate pipe mass excluding socket (kg/m) Approximate pipe mass including socket (kg/Length)

Effective length^
1 (m)

Overall Length (m)

Permissible Joint Deflection^


Le Lo
100 17 111 6.0 6.09 Up to 5
150 25 175 6.0 6.09 Up to 5
200 33 229 6.0 6.10 Up to 5
225 39 241 6.0 6.10 Up to 4
250 45 304 6.0 6.10 Up to 4
300 60 400 6.0 6.10 Up to 4
375 83 590 6.0 6.13 Up to 4
450 111 780 6.0 6.13 Up to 2
500 131 828 6.0 6.13 Up to 2
600 175 1089 6.0 6.13 Up to 2
750 257 1620 6.0 6.15 Up to 2


^1 Irontite® DI Spigot x Socket pipes are manufactured with an effective laying length of 6m and a tolerance of +/- 30mm.

^2 Refer to Angular deflection.

Irontite® Pipe Dimensions
Nominal diameter (DN) PN35

Flange Class

Mean outside diameter (y)


Allowable ovality



Nominal wall thickness (t) mm Minimum wall thickness (a) mm Nominal wall thickness (t) mm Minimum wall thickness (a) mm
100 5.0 3.0 7.0 6.0 122+1, -2 4
150 5.0 3.0 8.0 6.0 177+1, -2 5
200 5.0 3.0 8.0 7.0 232+1, -2 7
225 5.2 3.2 9.0 7.0 259+1. -2 8
250 5.6 3.6 9.0 8.0 286+1, -2 9
300 6.3 4.3 10.0 8.0 345+1, -2 10
375 7.3 5.3 10.0 9.0 426 ± 2 12
450 8.3 6.3 11.0 10.0 507 ± 2 15
500 9.0 7.0 12.0 10.0 560 ± 2 15
600 10.3 8.3 13.0 11.0 667 ± 2 15
750 12.2 10.2 15.0 13.0 826 ± 2 15

1. Ovality is the difference between the major and minor axes of the cross section. 2. Nominal wall thickness (1)= a + 2.0mm.
2. Nominal wall thickness (t) = a + 2.0mm.
3. Refer to clause 1.6.4 of AS/NZS 2280 for class of flanged pipe.

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