Chinese shield tunneling machines conquer devilish construction conditions in Sydney. Domestic shield tunneling machines are popular worldwide.

Under the Sydney Harbour Bridge and at the foot of the Opera House lies a challenge known as the "Devil's Work Condition". The challenger is a Chinese shield tunneling machine - "Patigaran". This tunnel has a maximum depth of 52 meters and withstands water pressure equivalent to 5 kilograms per square centimeter. In addition, some sections of the tunnel are in a clear "S" shape, with a minimum turning radius of only 960 meters. Generally, shield tunneling machines are large in size and have strong structural rigidity, making steering adjustments very limited. Its body is divided into several sections, connected in the middle by hydraulic cylinders. When turning, one side of the front cylinder extends while the other side shortens, allowing the body to bend at an angle. The "waist" is equipped with a precise hinge system, allowing this massive machine to elegantly "twist its waist" and accurately follow the curve. This tunnel is expected to open to traffic in 2028 and will become the second "main artery" under the Sydney Harbour. Today, Chinese shield tunneling machines can be found in more than 34 countries around the world. And what we are selling is not just a machine, but a "full life cycle service" and a "comprehensive solution".