... 2.Material:ST52 3.25000-30000cbm concrete sany DN125*3000mm concrete pump spare parts, 1.Profile and Products: Our company ... reducers, couplings, rubber hoses, cleaning ball and so on.2.Concrete Pump PipeBrands: Our products are top ... , SINOTRUK(CNHTC), FOTON, XUGONG,CHUTIAN, HAINUO etc and have been recognized by them.3.Concrete Pump PipeTechnology: ... pump spare parts(manufacturer,not trading company)