... mainly applied to concrete pump pipe connection, product type: DN125 DN100 DN80 NameConcrete pump clamp couplingsSize3.5inch,4inch ,5 inchMaterialHi-Mn 13 carbon steel ... , etcTypeQuick/snap clamp, bolt clamp, screw clamp, wedge clampTechnicalprecision castingApplicationConnection of Concrete pump and pump truck pipelineSurfacePainting or ...