As a leading domestic manufacturer of crusher accessories, Duma Machinery specializes in producing high-performance, wear-resistant components for the mining and quarrying industries. Our product range includes manganese steel castings, high-chromium alloy castings, crusher liners, and other types of durable spare parts. We are not only a well-known domestic manufacturer of mining machinery but also one of China’s major production bases for wear-resistant steel castings. With more than 100 skilled employees and a dedicated sales team of 6 members, we are equipped with advanced casting facilities spanning over 47,000 square meters, ensuring a steady supply of top-quality, wear-resistant components.
02
2025
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06
As a benchmark enterprise in China's crusher parts industry, Duma Machinery Manufacturing Co., Ltd. has become a globally recognized expert in wear-resistant castings, thanks to over a decade of accumulated technological expertise. The company specializes in producing a wide range of wear-resistant spare parts, including components for Chinese rock crushers, core elements for grinding mills, and custom-made wear-resistant parts tailored for screening equipment—products that are exported to more than 50 countries and regions worldwide. With extensive hands-on experience in the mining and construction sectors, we not only deeply understand our customers' needs but also continuously drive innovation and breakthroughs in our offerings.
30
2025
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05
Are prices of fixed cone liners and moving cone liners highly volatile? Analyzing the key factors
As a professional brand in the industry, Duma Machinery has been specializing in the production of gyratory crusher mantle liners for over 10 years. High-quality bowl-shaped liners can significantly extend the service life of cone crushers while reducing the frequency of replacements. Given that the replacement process is complex, time-consuming, and demands extreme precision, it’s crucial to strike the right balance between the price of moving cone liners and the quality of stationary cone liners when making your selection.
28
2025
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05
The Impact of Jaw Plate Material Selection on Crusher Performance
When it comes to selecting materials for jaw plates, the key to wear resistance lies in achieving a balanced relationship between hardness and toughness. ①If the material is too hard, the depth of material compression decreases, resulting in reduced deformation and weakening the short-range sliding-and-chiseling effect between particles. ②On the other hand, materials with excellent toughness can significantly enhance fracture resistance, effectively preventing brittle fractures during compression and impact, while also improving their ability to withstand fatigue-induced deformation and cracking. Duma Machinery—China's leading experts in jaw crusher spare parts—point out that these two performance characteristics often conflict with each other, making it a major technical challenge in the industry to achieve an optimal balance.
27
2025
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05
From May 22 to 25, 2025, the core teams from Duma Machinery Organization Company’s departments of technology R&D, marketing, and sales traveled specifically to Nanning to attend the 2025 Guangxi International Mining Exhibition. The purpose of this visit was to gain a deeper understanding of the latest global trends in mining equipment and stay abreast of technological advancements in the crushing industry—providing crucial insights that will inform the company’s product innovation and strategic planning.
26
2025
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05
In industries such as mining, metallurgy, and building materials, the durability of crusher wear parts directly impacts the equipment's service life and production efficiency. As a manufacturer of high-manganese steel castings, China's crusher wear parts factory has significantly enhanced the strength, toughness, and wear resistance of manganese steel castings through scientifically optimized heat treatment processes, ensuring they meet the demands of even the most challenging operating conditions. This article will provide a detailed introduction to the heat treatment technologies used for wear-resistant manganese steel castings, along with an exploration of their practical applications in real-world production settings.
23
2025
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05
Duma Machinery's main products include: mantle and concave liners, crushing walls, and distribution plates for cone crushers; jaw plates, side guards, and pressure bars for jaw crushers; lining plates for ball mills, autogenous mills, and other equipment; impact crusher hammers and impact plates; as well as hammer heads, screen bars, liner blocks, and other wear-resistant alloy steel components for metal shredders.