We are launching a new research on 3D concrete printing in Egypt and I'm searching for companies that can supply a concrete pumping system only without the printer.
find on LinkedIn contacts about the company MAI ,from Villach in Austria. I have tested with them my Geopolymer mortar for 3D printing and that equipment was really good.
MAI pumps can extrude even quite viscous material, thanks to 20 atm pressure that they can manage.