Explore our highly-engineered CCO overlay sheets, specialized flux-cored hardfacing wires, and industrial automated welding apparatus designed to extend machinery lifetime.
Self-shielded high-alloy welding wires formulated specifically to resist severe abrasive wear under high-stress grinding or scraping scenarios.
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Industrial structural steel base backing metallurgically bonded with high-carbide overlays, offering superior impact protection and structural resistance.
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Expertly optimized for cement and mining chute liners. Hardness range exceeding 60 HRC to prevent scratching abrasion.
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Advanced structural backing plates overlayed with dense primary M7C3 chromium carbides. Completely customizable thicknesses.
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High-grade alloy wires designed for field welding and surfacing without external shielding gas. Delivers extremely high deposition rates.
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Composite wear plate built from structural steel welded with a dense surfacing layer. Strictly conforms to DIN 8555 specifications.
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Four-gun automatic CNC overlay systems with central touch control panels. Designed for high efficiency and uniform swing overlay beads.
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Complete rebuilding and hardfacing services for heavy vertical grinding rolls, mill discs, and steel plant conveyance rolls.
Rebuild SolutionsIn heavy industrial processing, the mechanical deterioration of machinery due to abrasive sliding and impact is one of the single greatest contributors to downtime and high operating expenditures. Sliding abrasion, impingement by high-hardness mineral particles, and high-velocity gas streams carrying particulate matter erode metal substrates, causing catastrophic component thinning and structural failure.
Traditional structural steel sheets (like Q235B or Q355B) lack the grain microstructure necessary to block micro-cutting and scratching from materials like quartz, iron ore, and clinker. Bimetallic Chromium Carbide Overlay (CCO) plates address this by fusing a mild or low-alloy steel base with a hypereutectic overlay of chromium-rich alloy. The resulting microstructure contains hexagonal M7C3 primary carbides (with microhardness reaching 1200-1600 HV) embedded inside a supportive tough matrix. This prevents crack propagation and provides superior resistance to extreme abrasion.
"According to tribological tests and field data, substituting mild steel or quenched-and-tempered plates with high-quality CCO liners extends equipment lifespans by up to 5 to 10 times under severe dry sliding abrasion, resulting in significant savings in replacement and maintenance overheads."
Founded in 2010 in Tangshan, Hebei Province—the steel manufacturing capital of China—Tangshan Runxing Machinery Co., Ltd. has established itself as an industry leader in wear-resistant surfacing technologies. We specialize in the research, development, custom manufacturing, and on-site engineering of high-performance wear protection solutions.
Our comprehensive production facility handles everything from initial alloy powder selection to automated welding overlay and custom plate machining. To guarantee excellent material quality, we maintain an exclusive agent partnership with the German brand VAUTID. This partnership allows us to use world-class alloy formulations in our specialized product range.
We work closely with major universities to advance material science and engineering. In 2023, senior leadership from Tangshan University—including Dean Yuan Shaoqiang, Vice Dean Li Jing, and Professor Yang Yuehui (Metal Materials and Forming Technology team lead)—visited our facilities to establish joint research initiatives on metal microstructures and automated welding control systems.
Hebei Yuwan International Trade Co., Ltd.: All international trade, customs compliance, export documentation, and global payments are managed through our authorized trading partner, Hebei Yuwan International Trade Co., Ltd., allowing us to focus entirely on quality manufacturing and engineering.
Our custom wear-resistant plates and hardfacing materials are engineered to perform in the most demanding industrial environments around the globe.
Our bimetallic plates protect vertical grinding rollers, raw material separator guides, and cyclone ducts from raw stone and clinker wear.
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We supply heavy-duty liners for dragline buckets, dump trucks, and ore transfer chutes to handle abrasive stone, quartz, and heavy ores.
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Our solutions protect sinter plant screens, blast furnace distribution chutes, and coke guide systems from intense heat and sliding wear.
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Our high-hardness coatings are applied to fan blades, fuel transport pipes, coal pulverizer liners, and fly ash exhaust casings.
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We provide protective cladding for bulk carrier grab buckets, transfer hopper liners, and discharge pipes handling abrasive materials.
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For applications experiencing high-speed particle erosion without major mechanical impact, we offer wear-resistant alumina ceramic linings.
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We continue to expand our products to protect complex components across glass manufacturing, chemical processing, and agricultural machinery.
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We design custom liners using 3D CAD modeling. Plates are pre-cut, pre-drilled, and shaped for rapid bolt-in installations during planned maintenance.
Learn MoreHow we are developing next-generation metallurgical structures to deliver longer component lifespans and better cost efficiency.
By controlling chromium levels, cooling rates, and carbon equivalents, we create a primary M7C3 hexagonal carbide microstructure. This structure provides high hardness and protects the softer, supporting matrix from micro-cutting wear.
We utilize multi-gun automated overlay welding equipment. This system maintains consistent welding heat and speed, resulting in minimal dilution from the backing plate and a uniform, crack-free surface finish.
We develop high-performance alloys containing titanium, niobium, tungsten, and boron. These materials offer wear protection at high operating temperatures, making them ideal for challenging industrial environments.
Located in Hebei's primary steelmaking region, Tangshan Runxing Machinery benefits from a robust local supply chain. This location provides access to high-quality steel substrates, specialized alloy powders, and local technical talent, keeping our manufacturing processes efficient and cost-effective.
Our production facilities handle every step of fabrication under one roof. We manage plate leveling, automated cladding, precision CNC cutting, and forming internally. This end-to-end control allows us to reduce delivery times for custom orders, from raw material procurement to finished wear-resistant liners.
With our export partner, Hebei Yuwan International Trade Co., Ltd., we manage logistics, customs clearance, and global shipping. This partnership ensures reliable delivery to ports worldwide, supporting operations in Russia, Central Asia, Europe, and beyond.
Our participation in international exhibitions helps us collaborate with partners worldwide and share our latest hardfacing and wear-resistant technologies.
We launched our updated website platform to improve support for international buyers, offering online technical documentation and custom engineering requests.
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Our team presented our high-hardness CCO wear plates and automated welding systems at Africa's largest mining and construction trade show.
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We partnered with Tangshan University's Materials division to study metal cladding crystallization patterns and improve structural bonding strength.
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We renewed our technical partnership with VAUTID Germany, marking six consecutive years of collaboration on advanced hardfacing materials.
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We showcased our wear-resistant solutions for heavy mining equipment at Latin America's largest mining trade show in Santiago, Chile.
Read ReportTechnical answers to common questions about selecting, processing, and installing Chromium Carbide Overlay (CCO) plates.
The overlay alloy usually contains 4.0% to 5.5% carbon (C) and 25% to 35% chromium (Cr). This ratio forms a hypereutectic microstructure where chromium-rich primary M7C3 carbides develop in a matrix of austenite and eutectic mixtures, providing strong resistance to sliding abrasion.
The cracks are a normal result of stress relief. The high thermal input from welding combined with differing thermal expansion rates between the overlay and base plate causes cooling stress. The overlay relieves this stress by developing superficial micro-cracks perpendicular to the welding bead, which do not propagate into the base steel.
Yes, CCO plates can be cold-formed. Due to the hard overlay, they should be rolled with the overlay on the inside of the curve to close the stress relief cracks. The maximum bending radius depends on the plate and overlay thickness.
The plates are typically secured by plug welding through pre-cut holes or by welding the mild steel backing plate directly to the chute structure. They can also be installed using stud bolts welded to the back of the base plate.
Wear resistance is measured using the ASTM G65 dry sand rubber wheel test. Our plates show low volume loss under ASTM G65 testing, demonstrating their suitability for heavy abrasive sliding conditions.
We produce standard configurations such as 6+4 (6mm base + 4mm overlay), 8+6, 10+10, and 12+12. Custom thickness combinations can be manufactured to meet specific wear and impact requirements.
Our complete selection of wear-resistant plates, surfacing consumables, and automated equipment is engineered to minimize downtime and protect key processing components.
Self-shielded high-alloy welding wires formulated specifically to resist severe abrasive wear under high-stress grinding or scraping scenarios.
Configure Materials
Industrial structural steel base backing metallurgically bonded with high-carbide overlays, offering superior impact protection and structural resistance.
Request Spec Sheets
Expertly optimized for cement and mining chute liners. Hardness range exceeding 60 HRC to prevent scratching abrasion.
View RX-m Details
Advanced structural backing plates overlayed with dense primary M7C3 chromium carbides. Completely customizable thicknesses.
Explore Options
High-grade alloy wires designed for field welding and surfacing without external shielding gas. Delivers extremely high deposition rates.
Technical Datasheet
Composite wear plate built from structural steel welded with a dense surfacing layer. Strictly conforms to DIN 8555 specifications.
Examine DIN Standard
Four-gun automated CNC overlay systems with central touch control panels. Designed for high efficiency and uniform swing overlay beads.
View CNC Specs
Complete rebuilding and hardfacing services for heavy vertical grinding rolls, mill discs, and steel plant conveyance rolls.
Rebuild SolutionsA look inside our ISO-compliant manufacturing facilities and certified product lines, serving global heavy industries.
Runxing machinery