From Galvanised Steel to Polycop: The Evolution of Plumbing Pipe Materials in South Africa
There was a time when galvanised steel piping was the natural — in fact, the only — choice for potable water in older homes. If you grew up in a house built before the 1980s, chances are that behind your walls, or running along them in exposed runs, there were lengths of threaded steel pipe, heavy and grey, coated in zinc, carrying water from a central point to the kitchen, the bathroom, and the garden tap. And in some places, that is still the reality today. In Zambia, for instance, copper piping has yet to fully catch on, and galvanised steel remains — to a large extent — the norm. Layer upon layer, however, the galvanised pipe was replaced — first by copper, then by polycop, and later by a host of modern polymer systems that have steadily claimed ground in the South African plumbing industry. And yet, even South Africa has yet to fully embrace the modern polymer systems that have entered the market. But knowing the societal uptake of new technology here — how quickly a good idea spr...