POLY PIPE GUIDE
The different types of Polyethylene Pipe in the New Zealand Market cause headaches for many people trying to figure out what pipe they need, or already have on there property and matching this up with the fittings they need.
It’s a long story but to make it short LDPE, is only made in NZ and Australia, its measurement is based on the internal size of the pipe, MDPE is made worldwide and is measured on the external diameter of the pipe. Horticultural Lateral Tube is used for connection of sprinklers and drippers. These pipes use different fittings, click on the links below to see what the fittings look like
LOW DENSITY FITTINGS - LDPE
MEDIUM DENSITY FITTINGS - MDPE
There are 6 main manufacturers of Poly pipe and there are numerous New Zealand based and international suppliers of fittings for the pipe, all making for confusing times for those who are new to choosing pipe and fittings.
The Pipe is made to NZ standards and this table below details Pipe diameters in NZ
There will be slight variations between manufacturers in these measurements. These measurement are based off the RX Pipe Guide
If you find you need to measure pipe regularly use the Hansen pipe measuring tool.
NB: This explanation has excluded PE pipe for Civil use and Effluent Pipe
Below are details of the different brands and manufacturers, this may not be a complete list but it is to my knowledge
Major Pipe Brands
- Iplex - Greenline, Redline, Blueline, Blackline, Rural Black, Effluent
- RX Plastics - MDOD, MDID (MDID pipe uses LDPE fittings)
- Marley - Oasis
- Asmuss Water Systems
- Waters and Farr
Fittings to Use
- Iplex - Novatube (5bar)
- RX Plastics - Hort Lat Tube (3bar), Horticultural Lateral Tube (5bar)
- Wetta - Lateral (3bar)
- Rural Direct - Lateral (3bar)
- Waters and Farr - Hi Pol
Fittings to use