Longteng Special Steel Group
About Us
Products
Longteng Special Steel Group is a well-known private enterprise in China's special steel industry. Founded in 1993, it is a deep processing enterprise of metal products integrating sintering, ironmaking, steelmaking, refining, continuous casting, rolling and metal product processing. It has an annual output of 4.5 million tons of various special steels and its products are sold to more than 40 countries and regions. Longteng Special Steel Group has ten major business segments. Its leading products include: hot-rolled Marine sections, prestressed concrete (PC) steel bars, high-end wear-resistant steel balls, high-end welding materials, oil and gas pipe fittings, new energy forgings, medium and heavy plates, etc.
Among them, the three major products of Marine steel sections, PC steel bars and wear-resistant steel balls have all become the largest production bases in China, with market shares of over 60% in the domestic niche industries. Among them, wear-resistant steel balls have become the second largest supplier in the world's grinding industry
Vice President Company of CANSI
(China Association of National Shipbuilding Industry)
Six main products series ( 5.0 million tons)
1. Welding Materials
2. Shipbuilding section
3. High-strength pre-stressed concrete steel bar
4. Forging ingot series
5. Steel ball series for bearing & mining industry
6. Flange & End Plate
7: Steel thick plate
As part of our development strategy, we have always been focused on the complete production process model. We believe this will bring us synergy effects. Therefore, recently, a new product, namely welding consumables, has been added to our catalogue. It will cover all series such as gas shielded solid welding wires, flux-cored welding wires, submerged arc wires, argon arc wires, etc., as well as medium and heavy plate series (thickness 6-800mm). Width: 1500mm-3650mm, maximum single weight: 60t
Our LT welding wire has two main advantages:
A fully integrated production process, that is, supported by the world-class upstream steel manufacturing facilities of the same group company.
The newly developed production process, which adopts the latest technologies and know-how, namely fully automatic production, will ensure quality control.
Our advantages of medium and heavy plates:
Complete electric furnaces and off-furnace refining equipment
The rated capacity of the ultra-high power electric furnace is 115 tons, and the maximum steel output per furnace is 130 tons
It has two 115-ton LF refining furnaces and one double-station VD furnace
The largest-sized steel ingots and continuous casting billets
The largest flat steel ingot is 60 tons, and the largest plum blossom steel ingot is 270 tons
The maximum single weight of the ingot steel plate: 60 tons (forged and rolled combined process)
Continuous casting adopts the techniques of dynamic light pressing, dynamic secondary cooling and heavy pressing
The maximum cross-sectional specification of the continuous casting billet is 460*2600*3600mm
Complete rolling line equipment
Advanced split vertical rolling mill
| Company Name: | Longteng Special Steel Group |
| Business Type: | Manufacturer,Importer,Exporter |
| Brands: | LT |
| Employee Number: | 6000~6500 |
| Year Established: | 1993 |
| Company Location: | No.118 Hualian Road,Tongang Industrial park,Meili Town,Changshu,Jiangsu,China |
| Factory Location: | No.118 Hualian Road,Tongang Industrial park,Meili Town,Changshu,Jiangsu,China |
| Company slogan: | LONGTENG WELDING CONSUMABLES WELDING THE GLOBAL |
| OEM Overview: | We are also open to talk any kinds of cooperation model including OEM. |
| Production Line: | The 3800mm medium and heavy plate project, which was launched in July 2023, has a total investment of approximately 2 billion RMB, with an annual output of 1.5 million tons. The raw materials come from the thick plate continuous casting machine and die-cast steel ingots provided by the Group's electric furnace factory. The 6,600-ton and 14,000-ton forging presses can produce special steel plates by combining forging, rolling and heat treatment, meeting the demands of high-end internal quality steel plates. |
| R&D: | We have advanced R & D and inspection equipment and Excellent R&D team.
Relying on DC spectrometers and X-ray fluorescence analyzers, we have achieved second-level non-destructive testing of metal components, with element detection accuracy reaching the ppm level. This fully complies with strict international standards such as ASTM and EN, ensuring zero deviation in raw material composition. The carbon-sulfur analyzer precisely locks in trace carbon and sulfur impurities with a resolution of 0.001%, avoiding the risk of material embrittlement from the source and ensuring the stability of welding and toughness performance. At the microscopic level, the dual-track parallel operation of metallographic microscopes and field emission scanning electron microscopes can clearly capture sub-micron-level structural features such as grain boundary morphology and inclusion distribution, providing visual data support for process optimization. In terms of mechanical properties, the tensile testing machine and the impact testing machine simulate extreme working conditions, accurately outputting key parameters such as tensile strength, elongation and impact energy, ensuring the reliability of the sheet under high-load environments. Supplemented by high-precision hardness testers, it comprehensively covers the surface and core mechanical properties of the material. Through equipment collaboration and data closed-loop, we have achieved full-chain quality empowerment from component control, micro-regulation to performance verification, providing scientific endorsement for the high strength, high toughness and long service life of medium and heavy plates, and continuously leading the industry's quality benchmark. |
| Our Team: | Longteng - Where Dreams Set Sail●Because we have a dream, Longteng is where dreams set sail;●Because we love the iron and steel industry, Longteng is where we devote our life;●Because we are the hard "steel", Longteng is where we temper ourselves. |
| History: | Development history
In the development history of Longteng Special Steel, the progress at each stage has been defined by the degree of understanding of quality. Each stage of development corresponds to the company's brand-new understanding of quality. The development and progress of Longteng Special Steel are based on an excellent quality culture.
1993-2000.
Start with hardship
Longteng Steel Plant was established
1994-1998 The development of new products and the first entry of products into the international market
2001-2008.
Develop and process finished flange products for pipe piles and develop a production line for casting flange blanks
The steel rolling workshop has been completed and put into operation
2009-2016.
Comprehensive improvement
2014
2015
2017- Present
Comprehensive improvement
The fully automatic production lines for the bar and wire rod factory, sewage treatment plant, scrap steel warehouse and pipe end plate have been completed and put into operation.
The automotive forging company has started construction on the high-strength special welding materials technology project and the end plate hot rolling plant
Longteng wholly constructed the Hilton Hotel
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| Service: | Changshu Longteng Special Steel Co., Ltd. has been deeply engaged in the special steel industry for over 30 years. With technological innovation at its core, it is committed to providing customers with high-performance, customized steel products and comprehensive service support. From requirement analysis to delivery and implementation, we always safeguard the success of your project with outstanding quality and efficient service.
ServiceQuality Assurance: Full-process traceability system, providing authoritative test reports
Why choose Longteng Special Steel?
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| Market name: | Worldwide |
| Contact Person: | Mr Kevin Yin |
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