Why should I use Polyethylene piping systems?

Polyethylene pipes and fittings (also known as HDPE, PE100 and poly pipe), are designed for a long service life. Compared to traditional materials, poly pipe installations are the most competitive due to these major advantages:

  • High durability
  • Less maintenance than traditional steel and iron piping and a potential service life of 50-100 years
  • Can be used for a diverse range of applications
  • Rated in the “smooth flow” category for pipe, meaning low resistance to fluid flow
  • Non-corrosive and chemical resistant
  • UV resistant, maintaining the structural integrity and performance of the pipe
  • Fusion joining has less opportunity for leaks than gasket joining (can be thought of as one continuous pipeline without joints due to high quality fusion jointing capabilities
  • Available in a wide range of sizes, thicknesses and pressure ratings with fittings and equipment to create an entire system
  • Light weight and flexible for easier and more cost effective freight, handling and installation

For more information, please refer to The Benefits of PE.

What are PE100, DN, PN & SDR?

Pipe and fittings specifications will reference various factors that help determine measurements and pressure ratings of HDPE (high density polyethylene) pipe.

  • PE      Material type: Polyethylene
  • DN     Diameter Nominal = pipe outside diameter in mm
  • PN      Pressure Nominal
  • SDR   Standard Dimension Ratio

The basic polyethylene material types used for pipe production are PE63, PE80 and PE100. The number indicates long term strength (in anticipated years).

The pressure rating of a pipe – PN is determined by the diameter, wall thickness and material type and is expressed as:

Pressure rating in Bar at 20° (Mpa x 10)

SDR is used to describe the pipe, in combination with the material type. The higher the SDR, the thinner the wall thickness and the lower the pressure rating. AS/NSZ 4130 uses a standard SDR series to provide standard pipe pressure ratings, which are shown in our catalogue. Click here to request a copy.

SDR = Min. OD / Min. wall thickness.

What if I need stock quickly?

We maintain comprehensive stocks and offer same day dispatch with a range of priority service options to destinations throughout Australia.

Do you offer free quotes?

Of course! We take the time to listen and work with you to fully understand your needs so we can deliver your quote accurately and fast.

Does APS provide technical support for projects?

We pride ourselves on customer service and offering more than just products. Our sales and customer service team are all qualified butt and electro fusion welders and can offer valuable expertise and advice throughout your entire project, from quoting stage to onsite and maintenance.

Is Advanced Piping Professionally Accredited?

Quality and professional accreditation is fundamental to Advanced Piping Systems to ensure our customers receive the highest quality products and services.

  • All of our sales staff are certified butt welders and certified electrofusion welders
  • We are third party certified to AS/NZS ISO 9001 Quality Management System.

Should I use butt welding or electrofusion welding to join the HDPE pipes?

This depends on your project size and type, and location of installation. You have to consider:

  • The area surrounding where the pipe is to be welded and installed – electrofusion is better for smaller, tighter spaces where onsite welding is being used
  • The size of the pipe. Electrofusion systems are only available for systems ranging in size from 20mm to 710mm, whereas butt-welding can be performed up to 2000mm.
  • Training, accreditation and experience will also inform your decision. The preparation of pipes for both fusion methods is a meticulous manual process, however the weld itself is where the big difference is. Electrofusion can be a more automated process using a welding machine that has parameters set for appropriate fusion. Butt welding has more manual elements in the process.

Who can perform poly welding?

Operator-trained personnel, experienced and qualified to PMBWELD302B (Electrofusion weld Polyethylene Pipelines) with a current statement of attainment. Trained welders also need to demonstrate relevant ongoing experience and attendance at refresher courses. Typically the period between refresher training is 2 years.

All operators planning to conduct electrofusion procedures on a project should have an up to date training statement from an accredited RTO and should have demonstrated competency and experience with the sizes and types of fittings being installed on the project. (REF: PIPA).  Advanced Piping Systems offers training courses regularly. Click here for more information.

How do I calculate weld times?

When performing electrofusion welding, you should refer to the manufacturers’ instructions and the electrofusion unit itself. Automatic units with a scanning function will upload the data to the machine. Other machines require manual entry with reference to the manufacturer’s instructions.

When performing butt welding, there are very specific weld parameters to follow according to the pipe size, SDR and pressure requirements. Qualified welders should follow a methodical process, in accordance with their training, to calculate and adhere to the weld time.

What do the numbers on the barcode of an electrofusion fitting (EF) mean?

In poly welding, Electrofusion (EF) welding parameters must be strictly followed to ensure a successful joint.

  • Manual EF welding is done following strict instructions relevant to the pipe and fitting dimensions and manufacturers information, with data entered manually into the control unit.
  • Automatic EF welding using a control unit with a barcode scanner ensures the information is 100% correct for that fitting and ensures a fully automated and controlled data entry.

The barcode on an EF fitting has 24 numbers in it, most of which can be interpreted by using an industry wide method. This may vary slightly from each manufacturer but generally the numbers represent:

  • 1-8       Manufacturers mark
  • 9-11     Dimension (eg 63mm)
  • 12-13   Fusion current in voltage
  • 16-18   Electrical resistance in OHM
  • 19-21   Fusion time in seconds
  • CT       Cooling Time

Read more here on our blog.

Copyright Advanced Piping Systems Pty Ltd 2016.

All information is provided to best of our knowledge as a general guide.  Users should conduct their own tests to determine the suitability of products to actual job conditions.