Longteng Special Steel Group

LONGTENG WELDING CONSUMABLES

WELDING THE GLOBAL

We are also open to talk any kinds of cooperation model including OEM.

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.

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.

Longteng - Where Dreams Set Sail

"Steel is cast in fire and quenching. Only in this way can it become hard and afraid of nothing..."

"How is the steel tempered?" It is cast by our hands, our sweats, and our strong will.

While casting the steel, we are cultivating ourselves at the same time, which makes us stronger and indestructible. It is with the stiffness of the steel and fortitude like the iron that we, Longtengers, make difference again and again;

It is by virtue of the obsession with the iron and steel industry and a vision of a better future that we, Longtengers,strive in the forefront of iron and steel production;

We, Longtengers, are definitely the "steel" that is hard and afraid of nothing.

While, Longteng is the place where we train, grow and shine.

●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.

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

Longteng Steel Plant was established

1994-1998

The development of new products and the first entry of products into the international market

2001-2008.
Scale expansion

In 2001, China officially joined the World Trade Organization. Longteng Special Steel seized the opportunity and promptly grasped the trend of the rapid development of the national economy. It vigorously developed an export-oriented economy and continuously researched and developed "specialized, refined, distinctive and innovative" products. Among them, the Marine section steel passed the certification of 9 national classification societies around the world, and the products were sold to 26 countries and regions, earning it the title of "supermarket of Marine section steel".

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

2014
The construction of the Amei Zambia branch factory has started.

2015
The full-process production line of Aimei Yi high-end wear-resistant balls has been put into operation

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

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.

                                                                  Service

Quality Assurance: Full-process traceability system, providing authoritative test reports
On-time delivery: Real-time feedback on order progress, and compensation for delays according to the agreement
Worry-free after-sales service: Respond to customer issues within 24 hours and provide solutions within 72 hours.

                                         Why choose Longteng Special Steel?

1：Core technological advantages define industry benchmarks
2. Full industrial chain guarantee ensures worry-free and reliable delivery
3. Deep customization capabilities to meet diverse demands