Dexin Steel Pipe employs a combination of medium-frequency hot-expanding, cold-drawing, hot-rolling, and other processes to flexibly produce ultra-large thin-walled seamless steel pipes with diameters up to 1,320 mm and a diameter-to-wall thickness ratio of 100. These pipes cover materials such as carbon steel, alloy steel, stainless steel, and titanium alloys, meeting the demand for high-precision, highly corrosion-resistant pipes in high-end sectors like nuclear power, military, and energy storage. For example, its "radial forging hot rolling hot-expanding cold-drawing" combined process has been successfully applied to high-temperature sodium steam pipelines at the China Institute of Atomic Energy, achieving a 10%-15% improvement in material yield compared to traditional processes.
As a pioneer of medium-frequency hot-expanding technology in China, the company spearheaded the drafting of the Medium-Frequency Hot-Expanded Seamless Steel Pipes for High-Pressure Boilers group standard and participated in revising the GB/T 5310 national standard. These efforts address industry standardization gaps and promote the widespread use of hot-expanded pipes in petrochemical and power sectors.
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From steel billet procurement (using LD LF RH/VD CCM processes to control harmful elements) to rolling, heat treatment, and finishing, Dexin implements end-to-end quality management. Its six heat treatment furnaces and advanced testing equipment (e.g., non-destructive testing, hydrostatic testing) ensure stable product performance. Some pipes have operated flawlessly for over 100,000 hours under high-temperature and high-pressure conditions.
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At our company, we understand that timely and secure delivery is critical for large-scale industrial projects. Our logistics team coordinates every stage of the transportation process—from factory dispatch to your job site or port of destination. We work with trusted international freight partners to ensure cost-effective and on-time delivery worldwide. Each seamless steel pipe is carefully packed with protective materials, labeled clearly, and loaded by experienced handlers to minimize damage during transit. Whether shipping by sea, rail, or truck, we provide real-time tracking and flexible delivery schedules to match your project timeline.
1、Rapid Response and Delivery Assurance
By maintaining reserves of Φ380-Φ600 billets in multiple materials and 30,000 tons of finished inventory, combined with flexible contract processing models, the company achieves "30-day rapid delivery" to meet urgent project needs. For instance, Dexin supplied 150,000 tons of pipes (including 25,000 tons of hot-expanded pipes) for Zhejiang Petrochemical’s 40-million-ton refining and chemical project.
2、Intelligent Tracking System
Each pipe is tagged with a QR code that records material properties, physical/chemical performance, and process parameters, enabling full-process traceability to ensure delivery transparency and quality reliability.
As a leading manufacturer of large-diameter seamless steel pipes, we offer a fully integrated one-stop sourcing service designed to streamline your procurement process from start to finish. Instead of coordinating with multiple suppliers, you can rely on us for everything—from technical consultation to final delivery.
Leveraging Wuxi Special Steel Materials Co., Ltd. (trading division) and Dexin Pipeline Technology (insulation material production), the company offers comprehensive products such as seamless steel pipes, calcium silicate insulation materials, and prefabricated insulated pipes, serving petrochemical, power, and heating networks. For example, calcium silicate insulation materials can be customized into elbows, flanges, and irregular components for complex engineering requirements.
Wuxi Special Steel maintains 30,000 tons of readily available inventory with complete material specifications, including anti-H2S and anti-hydrogen-induced cracking specialty pipes. It provides "multi-variety, small-batch" supply services for large projects like Sinopec and CNPC, earning the nickname "Steel Pipe Supermarket."
The company holds international certifications such as API 5L, ASME, and EU PED. Its products are exported to 32 countries and regions, serving nearly 3,000 clients including global giants like France’s Alstom and South Korea’s Samsung Heavy Industries. Dexin has been consistently recognized as a "Top 100 Petrochemical Supplier."
With its core philosophy of "Do what others won’t, achieve what others can’t," Dexin Steel Pipe has become a leading enterprise in China’s large-diameter seamless steel pipe sector through technological innovation, full-chain quality control, and efficient services. Its customized production capabilities, intelligent logistics management, and one-stop procurement solutions deliver reliable material systems for high-end industries such as petrochemicals and nuclear power.