Concrete Pump pipe is generally divided into DN80,DN125 and DN150. DN80 pipe is mainly for sand blasting; DN125 and DN150 are mainly for concrete handling and delivery.also both have high pressure and low pressure types. Concrete pump pipe specifications 1.Material: 45Mn2,55Mn ,65Mn,20# steel… 2. Sizes: DN80-DN150 (mm unit),generally 125mm 3. Length: 1m,2m,3m, 6m or according