Fixed-length cutting device for fire-fighting plastic-coated steel pipe

The utility model belongs to the field of plastic-coated steel pipe processing equipment, particularly relates to a fixed-length cutting device for fire-fighting plastic-coated steel pipes, and provides the following scheme for solving the problems that an existing cutting device is single in function, inconvenient to fix plastic-coated steel pipes with different sizes and inconvenient to adjust the cutting size. A plastic-coated steel pipe is placed at the top of the cutting table, a cutting machine is installed at the top of the cutting table, a moving groove is formed in the top of the cutting table, a positioning plate is installed in the moving groove in a sliding mode, one side of the positioning plate makes contact with the plastic-coated steel pipe, a ruler plate is fixedly connected to the top of the cutting table, and a fixing base is fixedly installed at the top of the cutting table. A fixing groove is formed in the bottom of the fixing base, and openings are formed in the two sides of the fixing g