Durrans RMS (PTY) LTD is a joint business venture between the Durrans Group and Resistant Materials Services (PTY) LTD, based in South Africa. This company specialises in the manufactures and distribution of refractory coatings and refractory parting mediums that are both water and alcohol based.

Additionally, Durrans RMS (PTY) LTD distributes carbon products such as speciality anthracite powders, coal dusts, petroleum coke, metallurgical coke and recarburisers.