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The steel

We’re excited to introduce our latest product: AS1579 approved arc-welded steel pipes for water and wastewater applications.

Clover’s product range from Erciyas Steel Pipe Co. continues to broaden our capability as a non-biased pipeline provider.

At Clover, we engage with premium supply partners to source products that surpass industry standards. We go beyond simply supplying products on site: our capability spans design, innovative thinking and development expertise to deliver the best installed solution for your application.

Our steel pipe range is part of an exclusive distribution agreement with Erciyas. Erciyas provides steel pipes manufactured to the highest standards in world class, best practice facilities. Their capable team produces and supplies 600,000+ tonnes/year of steel pipe products worldwide on a global scale, to over forty countries.

We are recognised for our efficiency between supply chains, and with our local support and distribution of Australian certified products, we continue to grow across a variety of markets for the benefit of our clients.

Features & Benefits

  • Superior coatings systems, giving additional corrosion protection.
  • Strength and reliability.
  • Proven track record in over 40 countries.
  • Long life expectancy.
  • Compliance with AS1579 requirements.
  • Suitable for high pressure applications up to 6.8Mpa.
  • Standard proven polyethylene coated and cement lined pipes with alternate coatings and linings available to suit specific applications.
  • Diverse range of joints types available: including Cylindrical Push-in (C-Joint & E-Joint), Spherical Push-in Ball Joint and Butt Weld Joint to suit specific applications.


Steel pipes are the tried and true option for large scale infrastructure and construction projects such as distribution mains, and other large diameter applications. Whilst steel pipes are used across a variety of markets, industries and applications, our range of steel pipes from Erciyas are engineered for superior water and wastewater pipelines.

Product Range & Base Specifications

Manufacturing Standards:AS1579 Arc-welded steel pipes for water and wastewater
AS4321 PE coatings and linings for pipes and fittings
AS1281 Cement mortar linings of steel pipes and fittings
External Diameters:273mm – 2,235mm (larger sizes available up to 4,064mm)
Rated Pressures:Up to 6.8MPa (based on material selection & wall thickness)
Standard Coating:Polyethylene to AS4321
Standard Linings:Cement Mortar to AS1281
Coating/Lining options:Polyurethane or Epoxy
Potable Water:AS4020

Technical Information

External Diameters (OD)273mm – 2,235mm (AS1579)
External Diameters other (OD)>2,235mm – 3,048mm (International)
Wall Thicknesses (t)6mm – 35mm (depending on diameter and material)
Minimum Ultimate Tensile StrengthsTypical Grades – Other grades as per project needs

Standard Australian Grades
AS1579 Grade HA200 – 300MPa
AS1579 Grade HA250 – 350MPa
AS1579 Grade HA300 – 400MPa
Minimum Yield StrengthsTypical Grades – Other grades as per project needs

Standard Australian Grades
AS1579 Grade HA200 – 200MPa
AS1579 Grade HA250 – 250MPa
AS1579 Grade HA300 – 300MPa
Temperature Range-40°C to 70°C
Rated Pressure – MPa (Maximum Allowable Operating Pressure)                                              Up to 6.8MPa (based on material selection and wall thickness)
Test Pressure – MPa              (Maximum Allowable Test Pressure and combined stresses)                                              1.25 times rated pressure
Density7,850 kg/m3
Modulus of Elasticity207,000 N/mm2
Poisson’s Ratio0.30

Rated Pressure Calculation

The maximum internal hydrostatic pressure at which hydrostatically tested pipe is suitable for sustained operation is calculated from the following equations:

Rated Pressure MPA – Pr(Maximum working pressure) formula

            Pr=0.72(2 x SMYS x t)


Pr=0.72(2 x NMYS x t)


PrRated pressure MPa
SMYSSpecified minimum yield strength
NMYSNominal minimum yield strength
tWall thickness of steel
ODOutside diameter


The maximum rated pressure for pipes produced in accordance with AS1579 is 6.8 MPa. In emergency situations transient pressure may lead to an increase in pipe stress. Under these conditions the maximum allowable combined stresses shall be determined by the designer but should not exceed 0.90 x SMYS/NMYS (1.25 x rated pressure).

Weld process for Spirally Wound Pipe

Welding is carried out inside and outside via a continuous automatic submerged arc welding process. Welding is carried out to meet the requirements of AS/NZS1554.1 Part 1 Welding of steel structures: Category SP.


To maintain the integrity of the steel pipeline, the best joint is a welded joint:

  • Standard Joint system (Cylindrical):
    • Allows for easy, fast and clean installation
    • Innovative
    • Single Weld, Seal & Restraint system

Cylindrical C-Joint (Push-in Spigot/Socket)

A cement mortar lined pipe maintains a continuous lining without the need to reinstate the lining to maintain smooth fluid flow. The rubber stopper ensures no damage to cement lining during installation.

  • Easily jointing with single weld
  • No cement lining reinstatement required
  • Maintains smooth internal flow
  • Seal coating available

Cylindrical E-Joint (Push-in Spigot/Socket)

The E-Joint for Polyurethane and Epoxy lined pipe incorporates and innovative weldzone feature that ensures lining integrity is not compromised during welding.

  • Easily jointed with single weld
  • Innovative weld zone to ensure integrity of line system
  • Available for Polyurethane or Epoxy linings

Other Joint Types are available to suit your application:

  • Spherical ball joint, angular deflection up to 10° depending on pipe OD.
  • Butt weld joint, for high pressure and larger diameters.

Coating & Lining

Coating & Lining CapabilitiesMin Diameter (mm)Max Diameter (mm)
Coating3L Polyethylene (standard)
LiningsCement Mortar (standard)
Seal coat option available


Standard Coating System Overview

Coating systems

Polyethylene coating material fully complies with the material and performance requirements of AS4321:2001 polyethylene coating and lining for pipes and fittings.

Linings systems

Cement Mortar Lining

Cement mortar linings comply with the requirements of AS1281:2001 Cement mortar lining of steel pipes and fittings.

Steel pipes are lined with general purpose Portland cement mortar linings. Linings are applied to give a uniform thickness and finish. Seal coatings are available to apply over the cement mortar lining. Seal coatings limit the interaction between the cement and the contents of the water main. They reduce leaching and consequent elevation of pH levels in supply when conveying soft water, especially where flows are low and residence times are long.

Standards & Testing

Clover and Erciyas maintain a higher level of compliance for the manufacturing processes and distribution of steel pipes. Key standards we adhere to in the manufacture of steel pipes for the Australian market include:

  • AS1579:2001 Arc-welded steel pipes and fittings for water and wastewater.
  • AS4321:2001 Polyethylene coatings and linings for pipes and fittings.
  • AS1281:2001 Cement mortar linings of steel pipes and fittings.

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