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Easy-to-install sonic tube system for CSL

Sonitec is a tube solution invented to facilitate the integrity testing of foundations using the CSL testing method.
CSL (Cross Sonic Logging) method allows to determine the structural integrity and homogeneity of concrete within diaphragm walls, bored piles, drilled shafts, barrettes, concrete piles or augercast piles.CSL method requires a transmitter and a receiver to be inserted in parallel water-filled tube down the pile depth in order to propagate and measure the speed of ultrasonic pulses.Sonitec system have been designed for the sole purpose of facilitating the assembly and installation of long tube lengths in reinforcement cages.Sonitec has been for more than 20 years the preferred solution of piling and general contractors worldwide to safely and quickly deliver a perfect CSL testing environment.

Product features

100% factory tested

For leakage at our factory

Instant reconnection

by hand, no welding.

2 million meters

installed worldwide each year


Related Projects


AVE Palencia-Santander HSR Package 1 (Palencia – Palencia Norte) & Package 2 (Palencia Norte – Amusco)

AVE Palencia-Santander high-speed rail project is a significant infrastructure undertaking aimed at connecting Palencia and Santander in Spain. This project involves the construction of extensive railway networks, viaducts, and bridges, underscoring the need for a strong and resilient foundation. Recognizing the critical importance of ensuring the structural integrity of the concrete piles, the project management sought advanced testing methodologies.
Bangkok BTS

Bangkok BTS

The Bangkok mass Transit System (BTS) is a large urban skytrain system located across Bangkok, the capital city of Thailand. The system was inaugurated in 1999.

Dubai Airport

Dubai Airport

Dubai Airport is the main airport in the United Arab Emirates. The famous airport, located a few kilometer north of Dubai city, is home of the famous Emirates airline. Dubai International Airport is the #1 airport in the world in term of international passengers traffic.

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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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