Insimbi is a group of companies purposefully brought together to provide resource-based supplies to a wide range of industrial consumers. From modest beginnings in 1970, we now proudly offer ferrous and non-ferrous alloys; refractory and foundry materials; plastic blow moulding, injection moulding and rotomoulding production; and alloy recycling processes to national, regional and international markets.

Manufacture, supply and installation of refractory products

Calderys is world leader in monolithic refractories. Calderys provides design, installation, maintenance, and repair service support.