EPD: Polyethylene pipes, DN16-DN2000, Poliplex, Greenline, Sewerplex, Millennium, Thermapipe (Iplex (2018))
Poliplex pipes are the mainstay of the Iplex polyethylene range. Manufactured from pre-compounded AS/NZS 4131 resins listed on PIPA POP004, Poliplex water, sewer, slurry and gas pipes operating at mid-wall temperatures up to 30°C provide a minimum design life of 100 years. For buried applications, pipe is supplied with colour identification stripes or jackets to indicate the fluid type being conveyed. The Poliplex sizes range from DN16 to a massive DN2000; the largest polyethylene pressure pipe manufactured in Australasia. Rural Greenline polyethylene pipe is backed by Iplexs 20 year manufacturers warranty and is specifically intended for use in on-farm irrigation applications, economically conveying non-potable water at up to 80 metres head. These pipes are manufactured in imperial sizes from ¾ inch to 2 inch ID to the companys exacting specifications and are supplied in convenient long-length coils to minimise joints. Sewerplex pipe is provided with a light coloured internal skin to facilitate CCTV camera inspection and is designed to be used in gravity sewer applications. The thicker wall of Sewerplex pipe provides ring stiffness which in larger sizes is comparable to that of ductile iron pipe. A full range of compatible junctions, sweep bends and maintenance shaft drops allow curved gravity sewers to be constructed. When coupled to Iplex Ezipit maintenance shafts, a low maintenance, tree root, leak and infiltration-proof sewer system is ensured. Millennium pipe has been formulated in close association with Iplexs polyethylene supplier to provide previously inconceivable service life expectations in demanding trenchless installations and ploughed coal seam gas applications. Millennium offers resistance to slow crack growth failure mode that is more than an order of magnitude better than conventional PE100 pipe, rendering it virtually immune to failure initiated by surface scoring, squeeze-off or rock impingement. Millennium pipe produced from black and coloured PE resin in wall thicknesses up to 80mm exceeds the stringent high stress crack resistance performance requirements of PIPA POP016. When used in conventional open trench construction, Millennium pipe eliminates the need to import granular embedment, saving as much as 20% of the pipeline construction cost. For demanding installation conditions in rocky ground, trenchless installations and for critical infrastructure assets, there is no safer long-term piping solution than Iplex Millennium. Thermapipe was conceived by Iplex development engineers specifically for above ground water and mining slurry pipelines, where heat absorption has the potential to significantly reduce operating pressure and service life. As part of Thermapipes manufacturing process, a reflective white jacket of light stabilised PE containing titanium dioxide is coextruded on the outer surface of the pipe. This feature reduces solar absorptance ratio by more than 50% and typically lowers the peak mid-wall temperature of an exposed pipeline by 15-20°C, thereby increasing the maximum allowable operating pressure and service life of the pipe.
australia