After the reorganization of Ansteel and Benxi Iron and Steel Group in 2021, Benxi Iron and Steel Group officially became a second-tier subsidiary controlled by Ansteel Group. Benxi Iron and Steel (Group) Equipment Engineering Co., Ltd. (hereinafter referred to as “Equipment Engineering” or “the Company”) is affiliated with Ansteel Group Benxi Iron and Steel Group Co., Ltd. and is a controlled subsidiary under Benxi Iron and Steel Group. The Company’s registered capital is RMB 100 million. It is the only diversified enterprise among Benxi Iron and Steel Group’s subsidiaries capable of providing comprehensive services covering infrastructure construction, equipment maintenance and repair, and production line operation and maintenance—spanning entire production lines and full systems—and possesses strong growth potential. Established in March 2022, the Company was formed through the integration of Benxi Iron and Steel Construction Company (its predecessor being Benxi Iron and Steel Civil Engineering Construction Company, founded in December 1958) and Benxi Iron and Steel Electromechanical Installation Engineering Company (its predecessor being the 24th Regiment of the Third Branch of the People’s Liberation Army Base Construction Engineering Corps, founded in May 1983). To further build a market-oriented, professional, and scaled intelligent equipment inspection, maintenance, and repair enterprise covering all directions, the Company absorbed Benxi Iron and Steel Equipment Maintenance and Repair Center in December 2023, thus accumulating stronger advantages and new impetus for high-quality development.

I. Core Business and Products  

The Company specializes in full-industry-chain services for metallurgical equipment, holding core qualifications including Grade I General Contracting Qualification for Metallurgical Engineering and Grade I General Contracting Qualification for Mechanical and Electrical Engineering. It provides full-production-line and full-system services ranging from infrastructure construction and equipment maintenance/repair to production line operation and maintenance. Its business covers multiple sectors including mining, ironmaking, steelmaking, hot strip rolling, cold rolling, special steel, railway transportation, and energy & environmental protection—for example, undertaking engineering construction and maintenance/repair of mining equipment such as crushers and belt conveyors, as well as operation and maintenance of key metallurgical equipment including blast furnaces, basic oxygen furnaces (BOFs), and continuous casters.  

1. Mining Equipment  

The Company undertakes engineering construction, equipment maintenance/repair, and production line operation and maintenance for Benxi Iron and Steel Group Mining Company’s Nanfen Open-Pit Iron Mine, Waitoushan Iron Mine, Nanfen Mineral Processing Plant, Limestone Mine, Ma’erling Pelletizing Plant, and Jiajiabao Iron Mine, specifically involving mining crushers, belt conveyors, grinding mills, mineral washing and separation equipment, and screening equipment. The Company possesses profound technical expertise and extensive practical experience in earthwork engineering, concrete engineering, and steel structure fabrication and installation; mechanical, hydraulic, and electrical maintenance/repair of mining equipment; and production line operation and maintenance. Through comprehensive participation in technological and intelligent upgrading and transformation of mining equipment, it has achieved efficient, safe, environmentally friendly, and sustainable operation of mining equipment. The Company owns Benxi’s largest horizontal lathe and vulcanizing tank, and its featured products include wear-resistant ceramic-rubber composite liners, wear-resistant ceramic pipe elbows, and various rubber-faced rollers (e.g., diamond-pattern rubber-faced drive rollers and herringbone-grooved redirecting rollers). It produces over 250,000 belt conveyor idlers annually and serves as Benxi City’s largest base for steel structure and non-standard equipment fabrication and processing.  

2. Ironmaking Equipment  

Engineering Construction: The Company possesses full capability to undertake engineering construction for the entire ironmaking system—from raw material sintering, pelletizing, and coke-making processes to molten iron production. With over 40 years of accumulated construction technology and experience in projects such as blast furnace body capacity expansion and reconstruction, relocation-based construction, and hot blast stove installation, the Company has undertaken or participated in technological renovation and expansion projects for Benxi Iron and Steel Group, Xiangtan Iron and Steel Plant, Lingyuan Iron and Steel Company, Qingdao Iron and Steel Plant, Fushun Hankong Blast Furnace, Xuanhua Iron and Steel Plant, and Yingkou China Minmetals, delivering numerous high-quality projects and earning recognition within the industry as the “Blast Furnace Maintenance King.”  

3. Steelmaking Equipment  

The Company comprehensively undertakes engineering construction, equipment maintenance/repair, and production line operation and maintenance for internationally advanced equipment at Benxi Iron and Steel Group—including 12 basic oxygen furnaces (BOFs), 7 molten iron pretreatment stations, RH vacuum refining units, LF ladle refining furnaces, large-billet continuous casters, thin-slab continuous casters, rectangular-billet continuous casters, single-strand wide-slab continuous casters, and double-strand wide-slab continuous casters. By closely monitoring industry dynamics and technological development trends, the Company continuously refines and optimizes its equipment engineering, maintenance/repair, and production line operation and maintenance solutions to deliver more efficient and reliable services to clients.  

4. Hot Strip Rolling Equipment  

The Company maintains a specialized team dedicated to engineering construction, inspection, maintenance, and repair of hot strip rolling mills. Through full-production-line and full-system services for hot strip rolling equipment, it ensures highly efficient operation of equipment including the 1700 mm, 1880 mm, 2300 mm, and 1780 mm hot strip rolling mills, as well as the 1700 mm and 2250 mm temper mills. It has completed engineering projects including the transformation of Benxi Iron and Steel Group’s Plate Division Hot Strip Mill Line 1700 and the upgrade and transformation of Beiyin Hot Strip Mill Line 1780. Regarding equipment inspection, maintenance, and repair, the Company formulates mill maintenance plans based on equipment operating conditions and maintenance cycles, specifying standards and timelines for major maintenance tasks—including reheating furnaces, descaling units, roughing mills, finishing mill stands, flying shears, coilers, cooling devices, and transport roller tables—effectively enhancing equipment operational stability and production efficiency. Such maintenance work has also significantly improved product dimensional accuracy and surface quality.  

5. Cold Rolling Equipment  

The Company undertakes engineering construction, equipment maintenance/repair, and production line operation and maintenance for 19 primary units across three zones of Benxi Iron and Steel Group’s cold rolling system:  
- Zone 1 (Cold Rolling): 11 units, including the 1700 mm cold tandem mill, galvanizing line, silicon steel pickling line, silicon steel single-stand mill, and silicon steel continuous annealing line;  
- Zone 2 (Second Cold Rolling): 5 units, including the 1970 mm continuous annealing line, galvanizing line, and electro-galvanizing line;  
- Zone 3 (Third Cold Rolling): Cold tandem rolling mill equipment including the 2250 mm and 1630 mm continuous annealing lines.  

6. Special Steel Equipment  

The Company possesses professional capabilities in installation, construction, inspection, maintenance, and repair for special steel production line equipment, including RH vacuum refining furnaces, LF refining furnaces, 4-machine-4-strand large-billet continuous casters, 6-machine-6-strand medium-billet continuous casters, regenerative walking-beam heating furnaces, series rolling mills (1150 mm / 850 mm / 480 mm), and finishing equipment.  

7. Railway Transportation Lines  

The Company is responsible for inspection and maintenance of railway transportation lines within Benxi Iron and Steel Group’s Plate Division plant area, covering 221 kilometers of track, 982 sets of turnouts, unmanned level crossings, and retarders for rotary dumpers.  

Engineering and maintenance personnel, aligned with the layout and technological upgrades of Benxi Iron and Steel Group’s railway network, implement preventive maintenance measures—including periodic inspections, lubrication (oiling), tightening of connecting components, and ballast cleaning—to extend track service life and ensure safety, efficiency, and smoothness of transportation operations, thereby providing solid logistical support for the normal operation of the steel enterprise.  

8. Energy and Environmental Protection Equipment  

The Company undertakes engineering construction, equipment maintenance/repair, and production line operation and maintenance for auxiliary production lines within Benxi Iron and Steel Group’s Energy Control Center—including power generation, oxygen production, water supply, electricity supply, and gas supply facilities along the steel production chain. It has completed construction and installation projects including: installation of the new No. 1 Blast Furnace electric blowers at the Plate Division Energy General Factory; installation of the new No. 1 Blast Furnace TRT power generation unit; installation of the No. 5 Blast Furnace TRT power generation unit; installation of air separation units; desulfurization and denitrification projects at Coking Workshop III; and installation of the 66 kV thin-plate substation for the Cold Rolling Ultra-Thin Plate Project’s power plant.  

Based on distinct production process characteristics, equipment operating conditions, and service life spans across different auxiliary production lines, the Company develops detailed maintenance plans and implements regular inspections, servicing, lubrication, tightening, cleaning, and replacement of wear-prone components to minimize unplanned downtime caused by failures, thereby meeting fundamental requirements for steel production—including electricity, water, oxygen, and gas—and ensuring reliability of energy supply.