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Reinforced concrete. Manufactured to CEM I 52.5 SR3-LA standards and BENOR and NL BSB certified. Sulfate-resistant. CE marked. Sealed with a rubber gasket bonded to the wedge. Wall thickness: 200mm. Our hollow sections are equipped with four 10T ball joint anchors for easy installation on-site. The hollow sections are designed for a service load of 100kN/m². Weight: 9400kg