The steel industry turntable heavy transfer traverser is designed for cross rails to turn with 90 degree in warehouse and plants. Its working principle is that there are also rails installed on the turntable, when the rail transfer cart runs on the turntable transfer traverser, the turntable can be rotated automatically or manually until precisely connecting with the destination rail, then the transfer cart runs on the vertical rail. The turntable transfer traverser is suitable for many occasions, such as ring rails, vertical rails, and crossing rails etc. The turntable system run steadily and has features as high rail jointing accuracy and can meet full automatic electrical operation.