Putzmeister introduced the concrete pump B 232 S with “concrete crane” (former name of a concrete placing boom) W 17/20 in the year 1972. The concrete pump was driven water-hydrauically and was able to pump 85 cyd/h (65 m³/h) of concrete at 42 bar.

At this model, concrete pump and placing boom are mounted on a Mercedes Benz LP series truck. The model came out in 2008 as a jubilee model for Putzmeister’s 50^th anniversay and is limited to 5000 pieces.