1. Heilongjiang Longmei Group Mining Steel Strand Cooperation Project

As a core pillar of Northeast China's coal industry, the mining areas of Heilongjiang Longmei Group are frequently confronted with complex geological conditions, such as loose rock formations and high-stress roadways. These conditions impose stringent requirements on the safety and durability of roadway support systems.

Aosen Metal Products supplies high-performance pre-stressed steel strands customized to the group's mining output. These strands are processed into mining cable bolt systems and deployed in conjunction with matching anchor plates. Endowed with superior tensile strength and fatigue resistance, Aosen's steel strands effectively distribute rock pressure in tunnels and prevent support system failure induced by geological deformation. Since the establishment of this cooperative partnership, the products have not only ensured the safe and stable operation of Longmei Group's underground mining activities but also reduced the maintenance frequency of the support system, laying a solid support defense for efficient and safe mining operations.

2. Henan Energy Group Coal Mining Project

Henan Energy Group's coal mines are continuously advancing mining depths to new frontiers, where deep tunnels grapple with the dual challenges of high rock pressure and moisture-induced corrosion. Traditional support materials often fail due to inadequate load-bearing capacity or rusting, which severely compromises mining safety and operational efficiency.To address these issues, Aosen Metal Products custom-supplied pre-stressed steel strands specifically engineered for deep tunnel applications. From raw material selection to production processes, the products strictly comply with coal industry safety certification standards. Endowed with a high load-bearing capacity, they can withstand the prolonged impact of rock pressure; meanwhile, specialized surface treatment enhances their corrosion resistance, making them well-suited for the humid underground mining environment.This tailored solution not only ensures the safety of underground operations for Henan Energy Group but also reduces the replacement costs of support materials, thereby effectively improving mining efficiency.

3. Jizhong Energy Group Mining Area Development Project

As a pillar enterprise in Hebei Province’s coal industry, Jizhong Energy Group operates with concentrated mining zones and accelerated extraction cycles, creating an urgent demand for the timely, stable supply of support materials. Leveraging its geographical proximity advantage, Aosen Metal Products ensures the expedited delivery of pre-stressed steel strands. By optimizing the mechanical parameters of the strands to match the geological characteristics of different mining zones, the company has successfully deployed the products in coal mining operations. These products exhibit superior structural stability in roadway support applications, effectively mitigating surrounding rock displacement and cutting down maintenance costs. With its highly responsive supply chain and proven product reliability, Aosen has established itself as a core partner of Jizhong Energy in safeguarding the uninterrupted progress of coal mining operations.

4. China Coal Mining Construction Group Project

The projects undertaken by China Coal Mining Construction Group are confronted with diverse and complex geological conditions, which impose stringent requirements on the compatibility and ease of installation of support systems. The prestressed steel strands supplied by Aosen Metal Products support 24-hour delivery. When processed into mining anchor cables to align with the “excavate-and-support-simultaneously” construction rhythm, these strands achieve seamless compatibility with anchor trays of various specifications, enabling rapid installation without the need for additional adjustments. Boasting excellent straightness and machinability, the product drastically cuts down on-site installation time. Its reliable mechanical properties ensure the long-term structural stability of mine tunnels, effectively boosting construction efficiency while reducing operational costs—fully demonstrating Aosen Metal Products’ outstanding customized service capabilities.

5. Shanxi Datong Coal Mine Group “Intelligent Mine” Hoisting System

A large-scale mine (with an annual output of 12 million tons) affiliated with Shanxi Datong Coal Mining Group launched an intelligent upgrading initiative, which necessitated the replacement of conventional hoisting wire ropes to meet the operational requirements of “unmanned operation” and “heavy-load efficiency”. Previously, the mine relied on imported German wire ropes, which were characterized by high procurement costs and prolonged delivery lead times. To address these pain points, the mine adopted Aosen’s non-rotating galvanized wire ropes, which are manufactured from hot-dip galvanized steel wires. These ropes boast a diameter of 48mm, a breaking strength of 2160kN, and a bending fatigue life of 2 million cycles—surpassing the international standard of 1.5 million cycles. Equipped with proprietary “reverse-lay twisting” technology, the ropes effectively eliminate the bucket sway induced by rope torsion during the hoisting process, thereby enhancing transportation efficiency by 18%. Since their deployment in 2020, each Aosen wire rope has achieved a service life of 2.5 years, compared with the 2-year service life of the original imported alternatives, translating into annual savings of approximately 600,000 yuan in rope replacement costs.

Since commissioning in 2020, the service life of a single wire rope has reached 2.5 years (compared to 2 years for the original imported rope), saving approximately 600,000 yuan in annual replacement costs.