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E-mail
2853239563@qq.com
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Phone
15111098647
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Address
Yili Logistics Park
Hunan Longshengda Steel Pipe Manufacturing Co., Ltd
2853239563@qq.com
15111098647
Yili Logistics Park
Hubei Xiangyang Bridge Pile Driving Steel Casing Steel Plate Pipe Processing ManufacturerWe specialize in the research and development, production, and customized services of carbon steel large-diameter steel plate coils, relying on two major spiral steel pipe production bases and multiple automated production lines to deeply cultivate the fields of steel casing and steel plate coils. As a core supplier in the central and southern regions, the company adheres to the core concept of "quality first, technology driven", and its products are widely used in major projects such as bridges, high-speed railways, ports, and municipal engineering. It has become a strategic partner of China Construction Fifth Engineering Bureau, Changsha Metro and other units.
1. Material and Craftsmanship:
Made of high-quality Q235B/Q345B carbon steel, welded using double-sided submerged arc welding technology, with a weld strength of over 95% of the base metal. Support 6-24mm thick wall customization, with an outer diameter covering 630-2820mm and a maximum length of 14 meters, meeting the needs of ultra large diameter pile foundations.
2. Corrosion prevention and durability
We provide multi-layer anti-corrosion coatings such as epoxy coal tar, 3PE, TPEP, etc., which can improve corrosion resistance by 3-5 times and adapt to complex environments such as coastal areas and humidity. The surface is smooth without cracks, with a tolerance controlled within ± 1%, ensuring the accuracy of pile foundation construction.
3. Customized services
Support irregular machining such as conical, elliptical, and flange connections to meet special engineering requirements. 7-day fast delivery, equipped with a professional transportation team, covering regions such as Hunan, Hubei, Jiangxi, etc.
【Hubei Xiangyang Bridge Pile Driving Steel Casing Steel Plate Pipe Processing ManufacturerEngineering Case
Changyi Changsha High speed Railway: Supply spiral steel pipe pile foundation lining to support 32+90+90+32 meter steel box girders and 66 meter high steel box arches, ensuring the stability of high-speed railway bridges.
Changsha Metro Line 6: Provide spiral welded pipe pile foundation casing to ensure the quality of pile foundation in areas with high groundwater levels and shorten the construction period by 20%.
1. Equipment: Imported heavy-duty plate rolling machine and 1000 ton round machine, capable of rolling welded pipes with diameters of 480-3600mm and wall thicknesses of 20-300mm.
2. Certification: Passed ISO9001 quality management system, special equipment manufacturing license, credit rating certification, and the product has passed continuous inspections for many years.
3. There are 12 steel casing forming and anti-corrosion technologies, and the developed "high-precision pipe rounding process" has been included in the catalog of two types of products in Hunan Province.






Customer Cooperation Case
The Emergency Water Source Construction Project in the Urban Area of Jiujiang City2020One of the major livelihood projects of the year is the "Yangtze River Protection" urban emergency water source construction project, which includes the renovation of water diversion structures, water pumping stations, water pipelines, and water source protection projects.
Longshengda, Hunan(Sheng Shida)2021We won the bid for the second batch of welded steel pipes and their supporting accessories procurement project for the emergency water source construction project in the urban areas of Jiujiang and Ruichang in the year, supplying welded steel pipes with a length of approximately9.2 kmAnd supporting accessories150The winning bid also includes anti-corrosion treatment of welded steel pipes, factory inspection, packaging, transportation, unloading, inspection, QR code information entry, installation technical guidance, quality assurance services, and other related services.
After the completion of the project, it will solve the safety and hidden benefits of a single water source in the urban area of Jiujiang City and Ruichang City, effectively promote water source protection, further improve the urban water supply source pattern, and play an important role in establishing a sound water resource strategic reserve guarantee system for the local area, achieving sustainable, stable and healthy development of the water ecological environment.