Underground coal steel grid for coal mine

Feicheng Lianyi Engineering Plastics Co., Ltd., located in Feicheng, known as the hometown of Taoxiang, is a region rich in natural beauty and cultural heritage. The company specializes in producing high-quality steel-plastic composite grids used in underground coal mines. As coal remains a vital pillar of China's national economy, its importance in daily life has never been more evident. Since the 1990s, China has emerged as one of the world's largest coal producers and consumers. With the rapid growth of the national economy, coal production has seen double-digit increases in recent years. Experts predict that this strong economic momentum will continue to drive demand for coal and other energy resources, leading to increased requirements for mining equipment and support systems. Currently, the use of mine support products has become even more critical due to the emphasis on safe production. However, China's current mining support technology is still at an early stage. Most coal mine roadways rely on metal mesh, reinforced steel mesh, or steel wire mesh for protection. These materials are heavy, difficult to handle, prone to corrosion, and have high elongation rates, leading to issues like "net pocket" and reduced safety. Plastic meshes, such as polypropylene woven nets, lack sufficient strength to ensure safety in such environments. In contrast, developed countries have already adopted high-strength, low-elongation non-metallic nets, particularly steel-plastic composite grids. These innovative products offer numerous advantages over traditional metal meshes. They are lightweight, durable, and resistant to rust, making them ideal for harsh underground conditions. Their tensile strength is comparable to that of metal mesh, yet they weigh only one-third of traditional options. Additionally, their elongation rate is less than 5%, minimizing safety risks and improving operational efficiency. The steel-plastic composite grid is designed with a structure of modified plastic-coated high-strength cold-drawn steel wires, ensuring both durability and flexibility. Compared to traditional diamond or longitudinal mesh, it offers superior performance in several key areas: minimal elongation, excellent corrosion resistance, lighter weight, better adhesion to concrete, and lower production costs—up to 15% less than conventional mesh of similar strength. Key technical specifications include: unidirectional ultimate tensile strength ≥4800N, maximum elongation ≤5%, joint peeling force ≥200N, flame retardancy (flame extinguishing time ≤10 seconds), static resistance ≤1×10⁹ Ω, mesh size ranging from 50×50mm to 60×60mm, and adjustable width from 0.8m to 3.0m. With a daily production capacity of 2000–2500 square meters using the HJ-3000 model, the product meets high-volume demands efficiently. Driven by a spirit of innovation, truth-seeking, safety, and integrity, Feicheng Lianyi continuously improves its products by integrating advanced foreign technologies and adapting them to China’s coal industry needs. The company’s steel-plastic composite grids not only reduce production costs but also enhance overall performance, offering a promising market outlook. We are committed to providing top-tier technology, equipment, and updates on technological advancements. We welcome partnerships and look forward to working together to promote and adopt new products. Feicheng Lianyi Engineering Plastics Co., Ltd. is dedicated to serving our clients with professionalism and sincerity. Contact: Manager Hou Address: Taian, Shandong Phone: [Not provided] Fax: [Not provided] Email: [email protected] Website: http://geshan123.chinawj.com.cn News: http://news.chinawj.com.cn

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