A giant metal roof has been installed on the newest airport terminal in Qingdao in east China's Shandong Province, the country's first stainless steel roofing project for an airport terminal.

A special kind of 0.5mm thick stainless material was developed to withstand strong winds, torrential rain and marine corrosion as Qingdao is a coastal city.

The 220,000 square meter roof, equivalent to 31 standard soccer fields, was built by welding together 16,368 panels, said Cai Wangwang, roofing project manager of the Jiaodong international airport of Qingdao from the China Construction Second Bureau Installation Engineering Co., Ltd.