A challenge of the PVC pipes industry has been to push the traditional limit of PVC-O pipes past 300mm without lowering the orientation degree and decreasing the material quality, ensuring pipes are available for pressure ranges up to 25 bars.
Transferring water from the gas fields to water treatment plants requires high pressure, longer length pipelines.
Compared to polyethylene (PE) and metal pipes, the relatively thin but strong PVC-O pipes have greater water volume carrying capacity and lower susceptibility to water hammer, particularly compared with steel and cast iron pipes due to lower wave speed.
PVC pipes potentially offer a 20 per cent cost reduction in building water pipeline infrastructure over PE pipes, in sizes between 500mm and 800mm. PVC pipe is also the best option for the distributing treated water back to the environment.