The leading engineers of our company recommend to choose an optimal equipment for the production of concrete good. A reference choice can be done on mass by a 1 m of profile : less than 100 g is a single-screw extruder with the diameter of screw a 45 mm, for a 100-700 g/m are a 60 mm, for a 800-900 g/m are a 75 mm, for a 1000-2000 g/m are a 90 mm, 2000 more than is an extruder with screw a 120-150 mm or twin-screw extruder of the corresponding productivity.