Ambition for innovation, Creativity for Longteng

Innovation Platform
Cutting-edge Technology
Advanced Manufacturing
Quality Management

Build Innovation system for Longteng

Leading the overall improvement of Longteng's business philosophy with the strategy of technological innovation

Talent is the core force of enterprise development and the source of creating enterprise value. Longteng Special Steel pays attention to talent training and team building, and has built an elite team of high-quality, high-level and high-skilled talents, laying a solid talent foundation for the sustainable development of the enterprise.

7

Major R&D Chief Engineer teams
1000+

R&D teams
800+

Professional and technical personnel

Construction of three professional innovation platforms

National enterprise
technology center
Jiangsu Marine Equipment Steel
Engineering Research Center
Jiangsu Marine Engineering Metal Materials
Engineering Technology Research Center

Maintaining in-depth cooperation with domestic and oversea universities

Longteng co-founded the "Innovation and Development Research Institute" with Beijing University of Science and Technology, and has long cooperated with many well-known domestic scientific research institutes such as Beijing University of Science and Technology, Northeastern University, Jiangsu University of Science and Technology, Nanjing Institute of Technology, Changshu Institute of Technology, and Beijing Iron and Steel Design and Research Institute, with a total investment of nearly 3 billion yuan in research and development funds, which has greatly enhanced the company's technological innovation potential.

Cutting-edge techonology

8

national standards formulation and revision
20

industry standards formulation and revision
420

industry patents

Ace technology

Adhere to the path of differentiated development, adhere to the small product and big market development strategy, and actively build a new development pattern

Bulb flat steel
- The first domestic "double straightening + strong straightening" micro-deformation curvature control technology.
- The product market share has accounted for more than 50% of the national market for 13 consecutive years.
- The steel supplier for the world's first and largest bidirectional icebreaking polar research vessel "Xuelong 2".
Grinding ball
- The world's first semi-autogenous grinding "time-space dynamic ball adding method" and ball mill "time-space delayed ball adding method".
- The first automated hot forging steel ball production process combining die forging and free forging in China, the innovative results have been recognized as the world's leading scientific and technological achievements by the China Metallurgical and Mining Enterprises Association.
- "Champion of individual field in manufacturing industry", its overall scale ranks first in China and second in the world.
PC steel bar
- The independently innovated 30MnSiL steel grade that is not prone to brittle fracture has solved the key echnology problem steel bars. The brittle fracture rate is below 0.01%, and the national market share is 85%.
- "Champion of individual field in manufacturing industry", It is in the leading position in the industry and is known as the "The Crown of China PC Steel Bar"

Achievements

Longteng has won many honors and patents in the field of scientific research, and is constantly improving and developing.

Patent for observable ingot pouring device

2019
A kind of adjustable roll patent

2019
A kind of PC steel bar barber cage patent

2019
Patent for a sealed rotary mold

2019
A PC steel bar tensile test fixture

2019

Patent for observable ingot pouring device

2019
A kind of adjustable roll patent

2019
A kind of PC steel bar barber cage patent

2019
Patent for a sealed rotary mold

2019
A PC steel bar tensile test fixture

2019

A kind of high strength lifting tongs patent

2019
A kind of straightening wheel for steel bar straightening machine patent

2019
Patented take-up reel with rotating stopper bar

2019
Patent for a circulating heating device for pickling

2019
Patent for Frequency Control Circuit for Large Inclination Belt Machine

2015

A kind of high strength lifting tongs patent

2019
A kind of straightening wheel for steel bar straightening machine patent

2019
Patented take-up reel with rotating stopper bar

2019
Patent for a circulating heating device for pickling

2019
Patent for Frequency Control Circuit for Large Inclination Belt Machine

2015

Pressurized Leak Plugging Device for Energy Medium Pipelines

2016
Patent for a moving roller conveyor for sawing round bars

2018
Argon blowing device for intermediate packages

2016
Patent for an adjustable rolling guide

2018
Patent for a cooling control method for bearing steel balls

2018

Pressurized Leak Plugging Device for Energy Medium Pipelines

2016
Patent for a moving roller conveyor for sawing round bars

2018
Argon blowing device for intermediate packages

2016
Patent for an adjustable rolling guide

2018
Patent for a cooling control method for bearing steel balls

2018

Steel Rods for Prestressed Concrete Gold Cup Award Winner

2017
Hot rolled ductile flat steel Gold Cup Certificate

2018
A kind of blast furnace pre-injection coal lance plugging detection system patent

2016
A kind of patent with pressure plugging

2016
A patent for an internal lifting tool

2016

Steel Rods for Prestressed Concrete Gold Cup Award Winner

2017
Hot rolled ductile flat steel Gold Cup Certificate

2018
A kind of blast furnace pre-injection coal lance plugging detection system patent

2016
A kind of patent with pressure plugging

2016
A patent for an internal lifting tool

2016

Advanced Manufacturing

The company has always adhered to the principle of "extending the industrial chain, improving the value chain, and opening up the supply chain", seeking differentiated improvement in the market segments, and developing "specialized, refined, and innovative" products in a coupled manner. It has now become a comprehensive steel enterprise integrating traditional industries and deep processing.

Hot-rolled flange production line

High-speed end plate production line

Section steel production line

PC steel bar production line

Wear-resistant ball production line

Bearing steel ball production line

Double high-speed line production line

Welding material production line

Machining center

6600t forging machine

14000t forging machine

115t green electric furnace

Quality builds reputation, innovation drives development

Longteng Special Steel has passed ISO9001, ISO14001, ISO45001, ISO50001, GB/T 23001, IATF16949 and other management system certifications as well as factory and product certifications from the world's top ten classification societies in China, Italy, the United States, Britain, France, Japan, South Korea, Russia, Germany and Norway.

Quality System Certificate

ATF16949:2016 Management System Certification
Measurement Assurance Confirmation Certificate
AEOCN 3214960968
China Classification Society (CCS) Factory Accreditation Certificate
IATF 16949:2016 Management System Certification
GB/T23331-2020/ISO50001:2018 Energy Management System Certification
GB/T45001-2020/IS045001:2018 Occupational Health and Safety Management System Certification
GB/T24001-2016/1S014001:2015 Environmental Management System Certification
GB/T19001-2016/IS09001:2015 Quality Management System Certification
GB/T 23001-2017 Dualization Integration Management System Assessment Certificate

Testing Center

The Testing and Analysis Center is responsible for the testing and analysis of each branch factory. It has the ability to test and analyze the performance indicators of raw materials, billets, and steel products, and has the necessary testing and analysis capabilities in low and high magnification testing, inclusion and gas analysis, chemical composition analysis, mechanical properties testing, etc. It can quickly and accurately provide various testing and analysis results to serve each branch factory.

X-ray fluorescence analyzer
ARL direct reading spectrometer imported from Switzerland
Hydrogen, oxygen and nitrogen gas analyzer
Scanning electron microscope
HCS infrared carbon and sulfur analyzer
Fully automatic tensile machine
Rockwell hardness tester
Fully automatic impact tester
Three-station upsetting and other test equipment

Hardness tester
Microcomputer screen display hydraulic universal testing machine
HORIBA Oxygen, Nitrogen and Hydrogen Gas Analyzers
X-ray fluorescence spectrometer

Hardness tester
Microcomputer screen display hydraulic universal testing machine
HORIBA Oxygen, Nitrogen and Hydrogen Gas Analyzers
X-ray fluorescence spectrometer

Elemental Analyzer
metallographic microscope
ARL Direct Reading Spectrometer
Zeiss-type scanning electron microscope

Elemental Analyzer
metallographic microscope
ARL Direct Reading Spectrometer
Zeiss-type scanning electron microscope

Digital quality management

The company uses big data to establish a digital quality management platform to make the quality formation process explicit and visual.

Visual platform monitoring

Establish a digital platform for the entire industry chain of "SRM supplier relationship management, MES+ERP, WeChat platform", involving production planning, production performance, quality management, sales management, procurement management, material management, warehouse management, measurement management, inspection and testing management, human resources management, accounting management, cost management and other full-industry chain and full-process data collection, monitoring and analysis. A quality judgment system is established to make quality traceability explicit through quality forecasting, furnace classification, casting failure tracking, quality reporting, data presentation, etc.