Qingdao Beichuan Pipe Industry Co., Ltd. is a ship supporting company affiliated to Qingdao Beihai Shipbuilding Industry Co., Ltd. Shenyang Baotong Door Industry Co., Ltd. constructed the 10-gauge gate of Qingdao Beichuan Pipe Industry Co., Ltd. with a specification of 23.3 meters in width and 11 meters in height. The gate is designed as a flexible lifting stacking door structure, and the upper part is connected with the plant grid. An integrated load-bearing beam is provided with a lifting point, a hoist, and a fixed pulley, and the weight of the door is carried by it. Door posts on both sides of the plant are equipped with aluminum alloy tracks and seals. The gate entrance is a T-shaped entrance, and the entire entrance is designed as a gate. There are crane tracks on both sides of the gate. In order to ensure the normal access of the crane and the opening and closing of the gate, the gate track is designed as a movable swing arm on the upper part of the crane track. When the crane passes, the swing arm rises. After the crane passes, the swing arm returns to the bottom. The dock can be docked, and the gate can be raised and lowered normally. After the door is closed, the swing arm is hidden inside the door, and the whole door is integrated, simple and beautiful.