方管广泛用于建筑，机械制造，钢铁建设等项目，在造船，太阳能发电支架，钢结构工程，电力工程，电厂，农业和化学机械，玻璃幕墙，汽车底盘，机场,锅炉建造，高速路栏杆，房屋建筑，压力容器，石油储罐，桥梁，电站设备，起重运输机械及其他较高载荷的焊接结构件也有大量使用。

Square pipes are widely used in construction, machinery manufacturing, steel construction and other projects, such as shipbuilding, solar power generation bracket, steel structure engineering, power engineering, power plant, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, boiler construction, high-speed rail, building, pressure vessel, oil storage tank, bridge, power plant equipment, lifting and transportation machinery and other high-load projects. Welded structural parts are also widely used.