Snap clamp is mainly applied to concrete pump pipe connection, product type: DN125 DN100 DN80 NameConcrete pump clamp couplingsSize3.5inch,4inch ,5 inchMaterialHi-Mn ... , the towed concrete pump, Concrete placing boom series.3, Concrete pump truck fittings : Wear plate and wear ring, S valves, Concrete pump piston , delivery cylinder,.ect4: Concrete pump clamp : DN80 ...