Recently，One with diameter of 9.The 28-meter shield machine was successfully offline in Changsha Second Industrial Park of Railway Construction Heavy Industry.，This is the fifth of the Italian series of shield machines exported by China Railway Construction Heavy Industries.，It will soon participate in the construction of a high-speed railway tunnel between Palermo and Catania in Sicily, Italy.。 

It is reported that，The equipment will pass through fragile sedimentary rocks.、Clay and other strata，Complete one line and two intervals 7.472 km tunneling task。According to the characteristics of engineering geological and hydrological conditions,，The R & D team of China Railway Construction Heavy Industry has developed and applied the push synchronization.、Permanent magnet drive、Inverted arch cast-in-place、Many new technologies such as ultra-high pressure relief and automatic steering of trolley，Make equipment more efficient and energy efficient，It can greatly improve the construction efficiency，Significantly improve the working environment of workers。In addition，The whole machine is also satisfiedATEX（European Union Explosion Protection Directive）AndCE（Safety compliance standards）Two standard requirements。

In recent years，China Railway Construction Heavy Industry Co., Ltd.“Overseas priority”Strategy，Provide more Chinese solutions and Chinese wisdom for global infrastructure construction，Make construction more intelligent、Safer、More efficient、More environmentally friendly。