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Helicopter type plane sliding gate frame, gate 1 is mainly composed of a hanging seat and closed, oblique iron parts. In order to overcome the past doors easy corrosion of the shortcomings, the floodgate frame, gate full use of cast iron composition, which gate frame and the upper beam, lower beam, Zuo Zhiliang, right straight beam. In order to manufacture, transport, and easy to install, the gate is usually made up of parts of the upper and lower parts according to their size or height. Gate according to the different shape of the different, divided into PZ flat and PGZ arch two categories. Specific selection can be based on the gate hole size, pressure head, open and close type, the gate weight, etc.. Gate by gate structure of the combination of different, divided into the overall and the assembly of the two major categories. The small size of the gate is generally made of the overall, but the poor mechanical transport conditions of the construction and installation of the gate can be made into the assembly type, in order to facilitate the transport. More than medium size of the gate can be assembled in general