CZPPhave been supplying concrete pump parts for SCHWING, PUTZMEISTER, SANY, CIFA, KYOKUTO, ZOOMLION for many years. Specifications: Elbow-DN125 x R275 x90D Rigitiry: 62-65HRC Service life: 25,000-35,000CBM Material: Carbon steel Product profile: The double layer concrete pump elbow is developed by ourselves through new technology and process. Characteristic: the inner layer of this concrete pump elbow undergoes heat treatment, and then the rigitiry can reach 62-65HRC Characteristic: the outer layer of the concrete pump elbow possess good toughness properties to protect the inner layer, so the security of the elbow is