This project is 4-machine 4-strand updated by Hebei Xinghua Steel Co.,Ltd through employing newly added strand on previous No.3 casting machine, mainly producing billet with cross section of 280mm×340mm-320mm×380mm. This kind of CCM employ key technology such as hydraulic lifting ladle turret, hydraulic lifting tundish car, brand new secondary cooling section, optimizing water distribution at secondary cooling zone hydraulic non-sine rigid four connecting rod vibration Withdraw and straightening machine with four racks, etc. which achieve equipment reliability on producing bloom billet.