BZH-250Automic Butt Fusion welding machine are widely uesd in the pipe welding for gas.and oil . it can printing the records It's an automatic machine that welding as an butt fusion / heat fusion way. Building block structure, lightweight, high rigidity. Could be used weld all type of metal plastic joint, flange and valves. The optimal parameters of SDR pipe were set in advance according to different material and caliber. Fully-automatic control to welding time, temperature and pressure. Automatic measuring and compensate for drag pressure. Automatic popup of heating-plate. Automatic monitor and prompt the every operation step in the entire weld process. Timer worked as count down, so the operator can know the remaining time. Humanity designed, adopt the utmost protective level of dust proof, moisture proof and leakage proof. More adapt to rugged environment. Electronic temperature control systems, improve the precision of temperature control, and prolong the working life compare with the other welding machine equipped with AC contactor. Decrease the cost caused by machine failure. The fully-automatic control system, equipped with main machine body, milling cuter and heating-plate, could calculate the welding parameters according to the input data and weld automatically. And also could output and print parameters, decrease the welding failure caused by manual operation. Leakage protection, insure the safety of operation.