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SewerMax® is a cost-effective sewer pipe system suitable for gravity trunk sewer mains. Manufactured from polypropylene, SewerMax® pipes are highly resistant to chemical attack which can be common in sewerage and industrial wastewater pipelines. The material is also resistant in aggressive ground conditions, such as acid sulphate soils or saline ground waters.

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Iplex SewerMax® pipes and fittings are suitable for installation in the following applications:

  • Gravity sewers
  • Industrial trunk sewers
  • Rehabilitation of failed pipes with slip lining techniques
BlackMax® SewerMax® and SewerMax+® Technical Guide


Throughout Australia SewerMax® has been chosen for its unique characteristics and properties including:

Features Benefits
Durability The tough, ductile nature of polypropylene enables pipes to resist impacts sustained in the course of transportation and site handling, without damage
Abrasion and corrosion resistant Polypropylene is notably resistant to abrasion and has excellent resistance to corrosive drainage. The material is resistant to aggressive ground conditions, such as acid sulphate soils or saline ground waters
Effective rubber ring joint Designed for ease of assembly and jointing. Pipes can be cut to length on site and rejoined
Low embodied energy Environmental benefits
Inground performance High tolerance to deformation and can accommodate soil movement without structural damage
Smooth bore for hydraulic performance Combined with their high resistance to scale and sediment build up provides excellent hydraulic performance. This can result in reduced grades to accomplish a given flow
Lightweight for ease of installation Can be easily manoeuvred in confined areas by hand or with light lifting equipment. Site handling and efficiency is therefore improved, which can result in significant savings on installation
High pipe stiffness Suitable for deep installations
Material Options

Material Options

Mechanical Properties
Property Value & Unit
Density 900 kg/m³
Design Stress 17.5 MPa
Ultimate Tensile Strength 28.0 MPa
Ring Bending Modulus 1300 MPa
Tensile Modulus 3000 MPa
Poisson’s Ratio 0.45
Thermal Properties
Property Value & Unit
Max Continuous Service Temperature 50°C
Specific Heat 1045 J/kg.K
Thermal Conductivity 0.138 – 0.150 W/m.K
Coefficient of Thermal Expansion 7 x 10-5 / °C
Vicat Softening Temperature >79°C
Chemical Resistance

Polypropylene is inherently resistant to a wide range of chemicals such as acids, alkalis, salts, wetting agents and alcohols. It is however attacked by oxidising acids such as fuming nitric acid or hot concentrated sulphuric acid, neither of which should be encountered in a drain. Polypropylene is swollen and softened by halogenated solvents (for example, trichlorethylene) and hydro-carbon solvents such as xylene and benzene. However, the effect is not immediate and the occasional contact with solvents such as petrol or diesel is acceptable for PP pipes used for drainage and sewerage applications.

SBR seals are also resistant to a wide range of chemicals such as salt solutions, alkalis, glycols and some alcohols. SBR is swollen by a number of organic solvents, however, the seals are encapsulated in the pipe profile and to a large extent, isolated from the contents of the pipe. As only a small part of the seal surface is in contact with liquid in the pipeline, any occasional spillages or illegal dumping of chemicals should have a minimal effect.

Iplex Chemical Resistant Tool

Product Details

Product Details

Standards and Approvals

SewerMax® pipes and fittings are manufactured to the Australian Product Standard under third-party accredited Quality Management System (QMS) conforming to ISO 9001.

SewerMax® pipe has ISO Type 5 third-party StandardsMark™ Certification, License number SMXXX accordance with AS/NZS 5065 “Polyethylene (PE) and polypropylene (PP) pipes and fittings for drainage and sewerage applications”.

SewerMax® pipes and fittings have been appraised by Water Services Association of Australia (WSAA) for performance compliance with AS/NZS 5065 (WSAA Appraisal 03/05).

View Iplex Product Certifications

Environmental Credentials

Iplex have published verified Environmental Product Declaration (EPD) on our range of Polypropylene pipes. EPD’s are third party certified documents based on ISO 14025 and EN 15804 Standards that communicate transparent and comparable information about the life-cycle environmental impact of a product or service. Specifically, product declarations include information on the environmental impact of raw material acquisition, energy use and efficiency, composition of materials and chemical substances, emissions to air, soil and water and waste generation.

View Iplex’s BackMax® and SewerMax® polypropylene drainage pipes EPD

SewerMax® Pipe Range and Dimensions

SewerMax® pipes are available in diameters ranging from DN225 through to DN600 in SN10.

Iplex SewerMAX® Pipe Range and Dimensions

SewerMax® Fittings Range

A range of standard fittings, including bends, tees, junctions, closed ends, couplings, plugs, reducers, saddles and adaptors are manufactured for use with BlackMax® and SewerMax® pipes. Fittings can be fabricated from BlackMax® or SewerMax® pipe sections, PVC pipe sections, GRP / PVC and GRP / VC composite materials.

GRP, GRP/PVC and GRP/VC composite fittings are manufactured specifically for use with SewerMax® pipes with socketed ends for connection to SewerMax® pipe spigots. GRP fittings are also available with PVC or VC socket or spigot ends for lateral connections to incoming PVC or VC sewer pipes. GRP SewerMax® fittings comply with Australian Standard Revision AS3571 “Glass reinforced thermosetting plastics (GRP) pipes – Polyester based – Water supply, sewerage and drainage applications”.

BlackMax® and SewerMax® pipes are manufactured with a spigot and socket rubber ring jointing system. A profiled ring is located in the second trough from the spigot end and is compressed as the spigot enters the socket. This jointing system can be used after cutting the pipe anywhere along its length. Joined pipes may be deflected by up to 3 degrees off-line after assembly.

A range of stainless steel, jointing and repair clamps are available in sizes DN225, DN300, DN375, DN450, DN525 & DN600 for repairs and maintenance of SewerMax® pipes. SewerMax® Stainless Steel Junction with reducing DN100 and DN150 DWV branch off-takes at 45° are also available, simplifying lateral side connection to property branch sewer lines without the need of cutting-in a new junction. The stainless steel junction and clamps have been designed specifically for SewerMax® and comply with the requirement of Australian Standards "AS4181 Stainless Steel Clamps for Water Work Purposes".

SewerMax® Rubber Ring - Poor joint performance can lead to major problems with your asset. An inadequate joint can allow tree root intrusion, which can lead to pipe blockages and ground water infiltration. Infiltration through the pipe joint can also cause silting of the pipeline and long-term maintenance issues. For this reason, the duality of the joint is critical to the performance of any pipe system.

The SewerMax® pipe joint has been designed to meet the performance requirement of "AS/NZS 5065 Polyethylene and Polypropylene Pipe and Fitting for Drainage and Sewerage Application". The standard specifies a pressure test of 85 KPa and a vacuum test of - 85 KPa as well as a minimum contact pressure of 0.4MPa between the rubber seal and the pipe wall over a distance of at least 4mm. These conditions have shown to provide high resistance to tree root intrusion for plastic pipes.


SewerMax® Pipeline Design Structural
SewerMax® Pipeline Design Hydraulic
Handling & Storage

Handling & Storage

SewerMax® Handling and Storage
Installation & Testing

Installation & Testing

SewerMax® Installation
SewerMax® Testing
Why is SewerMax® yellow on the inside?

The Yellow inner linner allows for ease of visual inspection during installation commissioning.

Is SewerMax® approved?

SewerMax® has been approved by all of the Major Water Authorities in Australia for gravity sewer application.

How deep can you bury SewerMax®?

SewerMax® pipes provide a higher factor of safety with a minimum stiffness of not less than 10000N/m.m and are classified as SN10. SewerMax® is suitable for cover heights of 2 to 13 meters. A full structure analysis to AS/NZS 2566.1 should be completed to confirm suitability.

Can SewerMax® be used in industrial sewers?

SewerMax® is made of polypropylene and therefore exhibits resistance to a wide range of chemicals and solvents and is approved for use in industrial sewers.

What sizes are SewerMax® available in?

SewerMax® pipes are manufactured in Diameters: DN225, DN300, DN375, DN450, DN525 and DN600.

How do i join SewerMax® pipes?

SewerMax® pipes and fittings are manufactured with a spigot and socket rubber ring jointing system. Use a standard lubricant together with the rubber ring.

Is SewerMax® ribbed inside?

No, the inner wall is a smooth liner, providing excellent hydraulic performance.

Can you join SewerMax® PVC Sewer pipe?

Yes. Rubber ring joint adaptors are available from Iplex.

How do you repair SewerMax® pipes?

Both BlackMax® and SewerMax® pipes can be easily repaired with purpose designed repair clamps.

What about jetting and root cutters to clean the lines. Can SewerMax® be water jet cleaned?

Yes, provided appropriate methods are used. For complete information, refer to PIPA Guideline, POP205.

Can SewerMax® be used for relining, if so how far can you push a string?

SewerMax® pipe has been successfully used for relining existing corroded pipes and in boring application. The ground conditions and method of installation should be discussed with Iplex to determine its suitability.

Does SewerMax® conform with the relevant standards?

Yes. Both BlackMax® and SewerMax® conforms to the AS/NZS 5065 ‘Polyethylene and Polypropylene Pipes and Fittings for Drainage and Sewerage Applications'. SAI Global also certifies both products to the Australian and New Zealand standard.

Have BlackMax® and SewerMax® been appraised by WSAA?

Yes. Product appraisal 03/05 SewerMax® is regarded as fit for purpose and rated ‘A’ with a life expectancy in excess of 100 years.

What types of fittings are available for SewerMax®?

A full range of standard fittings are available providing a complete pipeline system. Please click on the following link for available fittings.

Case Studies

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