Dextra Group | Reliable Connections

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Tunnel breakthrough made easy with FRP rebar

ASTEC Soft–Eyes allow the penetration of Tunnel Boring Machines (TBM) through diaphragm walls and secant piles. This unique technology uses cut-able Glass Fiber Reinforced Polymer (GFRP) reinforcement as an advantageous replacement for conventional steel rebars. The Soft-Eye technology has been developed by Dextra in 1996 and successfully implemented for the first time on Bangkok MRT subway stations. The Soft-Eye technology has since become a standard concept in the design of launching/receiving shafts and subway stations. We have successfully supplied over 500 soft-eyes on all continents. Dextra offers an integrated turn-key solution which includes design, optimization, manufacturing, logistic and on-site training.

Where and why using Soft-Eyes?

Design to breakthrough

Dextra follows and assist you
through every step of the way.


Let TBM go through in minutes
while avoiding any damage.


Tunneling delayed? Dextra Soft-Eyes
can stay in the ground up to 100 years!

Turnkey solution by Dextra

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Soil Retention: Post-tensioned steel ground anchor system used in excavation works.


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.

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