布鲁塞尔地铁是一个快速交通系统，服务于比利时首都布鲁塞尔的大部分地区。它由4条常规地铁线路和3条地铁预备线路组成。

Line 3 is a tram line that runs through the city center from Churchill in the south to Esplanade in the north, using the North-South Axis tunnel. The total route will be 10.3km long.

An 150m long new tunnel was dug underneath the Brussels North railway station to connect two existing underground tunnels. It was an important component of the new metro link.

额外供应 索尼泰克, a tube solution that facilitates the integrity testing of foundations using the CSL testing method, to the construction site of Line 3. 13 kilometers of the tubes were installed in the 18m long pile cages.

这 索尼泰克 system has been designed with the sole purpose of being easy to assemble and install in reinforcement cages.