It is turn from top to the bottom and it is from the North Pole to the direction of your chest.
它是从顶部到底端，并且是从北极向著你胸口的方向旋转。
Auxiliary Pole: work with direction wheel at bottom of push board, ensure pipe moving direction.
辅助杆位于推板的两侧确保管材的前进方向。
Auxiliary Pole: work with direction wheel at bottom of push board, ensure pipe moving direction.
辅助杆位于推板的两侧确保管材的前进方向。
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