Dextra Group | Reliable Connections

Close this search box.
My Dextra
Close this search box.

Singapore Circle Line (CCL) – Stage 6

Singapore Circle Line (CCL) – Stage 6

The Circle Line (CCL) is an underground Mass Rapid Transit line in Singapore. The 35-km, 30-station line runs from Dhoby Ghaut and Marina Bay in the Central Area to HarbourFront in the south.

It is one of the world’s longest driverless rapid transit lines.

In 2013 the Circle Line stage 6 was announced, a 4-km extension to finally close the circle of the CCL by connecting HarbourFront station to Marina Bay station.

Three additional stations are under construction and expected to be operational in 2025.

Well-known expertise and quality in concrete reinforcement solutions were necessary to tackle this project, and Dextra’s Bartec couplers were chosen for several parts of the Circle Line structure, including starter bars, slabs, and column joints.

By the end of the project, approximately 200,000 couplers will be delivered on site.

Moreover, Dextra provided 3,000m of Glass Fiber Reinforced Polymer (GFRP) rebars, that can boast some key benefits with respect to metal rebars: a lighter weight, no risk of corrosion, and a lower susceptibility to attract lightning strikes.

On top of that, Dextra was entrusted with the reinforcement of the concrete structure of the tunnels: 8 Astec Soft-Eyes were used to facilitate the penetration of the Tunnel Boring Machines (TBM) through diaphragm walls, thanks to their innovative cuttable GFRP structure.

Related Solutions


At every moment of your customer journey, Dextra teams dedicate themselves to the production of smart construction solutions that allow our customers to reach higher productivity and safety levels on their construction sites.

Dextra holds physical stocks on several continents, complemented in each country by the local inventories of our distributors. With this extended network, Dextra makes sure our products are always at reach no matter where our partners are.

For solutions that require to be customized, Dextra can also go beyond our standard delivery times and offer accelerated delivery schemes. Consult us for more information.

From 3 major industrial sites located in Bangkok (Thailand), Guangzhou (China), and Pune (India), Dextra completely owns its manufacturing facilities and processes. This allows us to have complete control over the timing of our operations and the quality of the solutions produced.

An independently accredited material testing laboratory, accredited to ISO-IEC17025, is located at Dextra’s main Bangkok factory, allowing the testing of material and products.

Dextra aims to supply products that exceed the most demanding international technical approvals and it is our goal to create maximum customer satisfaction by complying with our clients’ needs and specified requirements.

Please enter your information

Contact us

   Share your information with us and we’ll get back to you as soon as possible.