Shandong round friends heavy industry on the basis of absorbing advanced technology at home and abroad on the basis of self-development and development. The product is mainly applied to the long distance mixing transportation of concrete mixture, which can effectively delay the initial setting of concrete, avoid the stratification and segregation of concrete, and ensure the quality and speed of construction. The top part is shot peening and baking process, with elegant and beautiful appearance, stable and reliable rotation, quick discharge, low residue, simple operation and long service life.