Putzmeister Concrete Pump Spare Parts S2015 2018N 2318N S Valves Tube 4340230 44420089

S tube part is welded by ST52 steel plate, which is formed by 

integral process toreduce the resistance of concrete flow.

Hard face layer High anti-wear welding electrode to hardface inside wall of the s tube with a thickness ≥3.5mm, HRA ≥60.

Necessary Annealing process to make sure of the quality.