By Siddhartha Roy
As with anything, the way a plastic is processed and formulated varies from country to country.
Overleaf is a table outlining the different forms of plastics observed in various parts of the world.
There has been considerable convergence, especially in the last two decades of globalisation, but the broad trends are still discernible.Pipe colours in India
In PVC pipes details are important. Colour, pressure and models vary. The uses of colour in different regions of the world is intriguing. PVC pipes are mainly installed underground, and apart from Drain Waste Vent (DWV) applications, are rarely used exposed.
Even in DWV lines the pipes are often painted over. So why is the colour of pipe important when it gets hidden anyway?
Until recently, in India, PVC pipes were made in white like the US system, or black, similar to PVC conduits for electrical installation.