PJ Projects has been manufacturing pre-cast concrete rib and block decking systems for more than ten years. Big enough to provide in all your pre-cast concrete requirements, but small enough to build a relationship with you, PJ Projects has become well-known for its reliability and prompt service. PJ Projects is situated in Cullinan, just outside Pretoria and also has a yard in Witbank. We supply pre-cast concrete rib and block decking to building contractors, developers and individual builders in the whole of Gauteng, Limpopo and Mpumalanga provinces.