TIANJIN DEJIA successfully developed our advanced hollow indented prestressing steel strand and hollow smooth prestressing steel strand. Engineered with technical specifications of 1+9- 28.0-1720Mpa and 1+8- 22.0-1860Mpa, these solutions address demanding structural requirements. Our hollow steel strand delivers exceptional tensile strength alongside a large diameter to maximize load-bearing capacity. By ensuring strong bond performance and low-relaxation characteristics, our engineering team helps reduce overall steel consumption. This meticulously maintains long-term stability for permanent support structures in deep underground applications.
Unlike traditional grouting cables, our hollow PC strands allow seamless cement grouting directly through the central hollow tube. This specific structural design simultaneously enables pre-tensioning via an integrated anchor locking device. Applying this dual-function method creates a highly convenient and reliable construction process that effectively saves critical project time. The integrated approach significantly enhances the long-term stability of roadway surrounding rock and permanent support structures in challenging geological conditions.
Our engineering standards prioritize maximizing structural support effectiveness for critical underground operations where safety remains paramount. The large diameter design of our prestressing steel strand inherently boosts the overall load-bearing limits of the entire support system. Combined with high tensile strength, these strands effectively handle immense dynamic loads encountered in deep operational environments. This directly ensures safe mine operations while actively contributing to the sustainable development of modern deep mining infrastructure.
Efficiency in material usage remains a critical factor for managing material allocation in large-scale engineering projects. The unique hollow profile reduces unnecessary weight and overall steel consumption without compromising the essential low-relaxation properties required for structural integrity. By maintaining a strong bond performance with the surrounding rock surfaces, our hollow grouting anchor cables optimize the required material volume. This precise balance naturally increases economic efficiency for extensive tunnel support and continuous mining operations.
Decades of dedicated focus on the prestressing field ensure our products consistently meet rigorous global engineering demands. Our hollow steel strands have been successfully exported to Australia and multiple European countries for integration into critical infrastructure. Maintaining a strict adherence to internal enterprise standards guarantees consistent safety and operational excellence. We consistently provide international clients with a highly solid foundation for executing their most challenging structural engineering projects.
Our self-owned industrial site features globally advanced intelligent production lines specifically dedicated to specialized prestressing materials. Operating within a standardized green-tech manufacturing facility ensures every low-relaxation strand maintains completely consistent metallurgical properties. We systematically implement stringent quality management protocols throughout the entire continuous drawing and stabilization manufacturing process. This technological leadership allows us to seamlessly deliver high-quality materials utilizing an annual integrated production capacity of 160,000 metric tons.
Deep underground operations require specialized structural materials fully capable of withstanding extreme environmental pressures and shifting loads. Our hollow strands primarily serve as highly effective grouting anchor cables within highly complex mining environments. They actively integrate fractured rock surfaces through targeted cement grouting to establish extremely secure permanent support structures. This targeted application remains absolutely vital for maintaining the long-term stability of essential underground roadways and vertical mining shafts.
Large-scale tunneling projects depend entirely on highly reliable ground reinforcement to successfully prevent structural collapse during continuous excavation. The dual capability of pre-tensioning and grouting makes our hollow strands strictly ideal for reinforcing highly unpredictable tunnel geology. They provide immediate active support while the subsequent grouting process reliably ensures lasting passive reinforcement. This comprehensive anchoring solution effectively safeguards both the dedicated construction personnel and the structural integrity of the final tunnel infrastructure.
Operating professionally since 2005, we continuously harness deep technological boundaries to steadily push the limits of prestressing material capabilities. Our comprehensive product portfolio covers a notably wide range of specialized concrete steel wires and heavily reinforced strands. Backed completely by 59 patented innovations, our team consistently delivers reliable and highly innovative engineering solutions. We ensure perfectly consistent quality through the steady adherence to multiple rigorous national and international certifications.
Delivering absolutely uncompromising quality actively forms the core foundation of our entire specialized manufacturing operation. Our facility holds a comprehensive suite of certifications directly covering National High-Tech Enterprise status and strict green factory accreditation. We rigorously test every single production batch to guarantee perfectly optimal tensile performance alongside verified low relaxation properties. Our unwavering commitment to zero deviation ensures clients reliably receive only the most robust construction materials available.
We offer technical specifications including 1+9- 28.0-1720Mpa and 1+8- 22.0-1860Mpa for both indented and smooth profiles.
The central tube allows direct cement grouting while simultaneously permitting pre-tensioning through the integrated anchor locking device.
Our hollow strands regularly support critical infrastructure in Australia and Europe, meeting strict international engineering standards.
