Explore our foundational range of chromium carbide overlays, bimetallic composite steel plates, and specialized flux-cored wires engineered for heavy-duty industrial application environments.
A premium composite material combining structural carbon steel with a heavy, wear-resistant overlay containing hypereutectic chromium carbide crystals.
Designed for severe abrasion environments. Manufactured via automated open-arc weld overlay processes for precise hardness profiles.
Engineered for high alloy deposit structure with minimal dilution. Perfect for field repairs, bucket refurbishments, and roll repairs.
A complete portfolio of proprietary alloyed wires tailored to mitigate specific mechanisms of industrial abrasion, impact, and heat.
Designed specifically for mining chute liners and cement drop boxes. Excellent wear coefficient under severe impact abrasion.
A structural steel backing fused to an ultra-hard weld surfacing matching DIN 8555 specifications. Engineered for critical wear environments.
Advanced numerical control systems, touch-screen operation, and multi-gun systems for automated wear plate production and repair.
Comprehensive rebuilding, surfacing, and repair services for grinding rolls, vertical coal mill rolls, and steel rollers.
Years of Hardfacing R&D
Average Overlay Hardness
VAUTID Authorized Partner
Global Industrial Projects
Founded in 2010 in the industrial hub of Tangshan, Hebei Province, Tangshan Runxing Machinery Co., Ltd. has established itself as an authoritative manufacturer and researcher of advanced wear-resistant metal materials. We specialize in the development and field installation of high-hardness surfacing components designed for heavy industrial applications.
Our core capabilities range from the fabrication of Chromium Carbide Overlay (CCO) wear plates and custom-milled liners to wear-resistant structural piping and automated surfacing machinery. By maintaining strategic alliances with premium material providers and academic institutions—including our long-term partnership with German brand VAUTID and the metallurgical teams at Tangshan University—we bridge advanced metallurgy with field application realities.
All export business is handled transparently through our authorized trading partner, Hebei Yuwan International Trade Co., Ltd., ensuring seamless logistics, customs clearance, and global payment compliance.
Read More About Our Facilities >Modern industrial systems face extreme operating stresses. Severe abrasive wear, mechanical impacts, and chemical corrosion combine to degrade capital machinery. According to global industrial tribology data, industrial machinery degradation due to wear costs global mining, cement, and steel operations billions of dollars in downtime and replacement parts annually. Overcoming this requires advanced metallurgy that goes beyond traditional structural steel.
The global hardfacing market has evolved from using simple carbon steel plating to utilizing Hypereutectic Chromium Carbide Overlays (CCO). By using arc welding processes to deposit high-chromium alloy materials onto strong carbon steel backings, manufacturers create composite materials. These composites feature excellent surface hardness (typically 58-62 HRC) combined with the structural toughness and weldability of the structural backing plate.
Today, operations focus on maximizing **Information Gain** and **Operational Efficiency**. Buying wear materials is no longer just a purchasing decision; it is a long-term capital preservation strategy. Industrial operations demand proven microstructures, reliable hardness depth profiles, and consistent bead patterns to ensure predictable equipment life cycles.
At Tangshan Runxing Machinery Co., Ltd., we develop wear mitigation products based on structural and chemical optimization. Standard mild steel offers tensile strength but lacks resistance against high-stress grinding abrasion. By using flux-cored welding wires to apply a specialized overlay, we create a composite structure with high hardness and abrasion resistance.
Our overlay materials are engineered to form hypereutectic microstructures with a high volume fraction of primary Cr7C3 carbides. These carbides, with microhardnesses reaching up to 1500 HV, are embedded in a tough, support-providing eutectic matrix. This matrix prevents premature carbide breakout during impact, making the material highly wear-resistant.
Applying hard, high-alloy deposits on soft steel backings introduces thermal stresses. Our automated surfacing machines resolve this through precise temperature profiling and optimized cooling rates. This results in regular stress-relief cracks across the overlay bead. These cracks relieve residual welding stresses without affecting the overlay's adhesion to the backing plate.
We also monitor the dilution rate, which is the amount of backing steel that melts into the hardfacing overlay. By keeping dilution levels low, we ensure the overlay retains its full chromium and carbon content from the very first millimeter of the deposit.
High concentration of hexagonal chromium carbides provides reliable resistance against wear from abrasive particles.
A tough austenitic matrix holds primary carbides in place, reducing fragmentation under mechanical impacts.
Advanced open-arc surfacing controls heat input, keeping chemical composition consistent throughout the overlay thickness.
We provide tailored solutions for key industrial sectors. By analyzing how materials move, and the impact angles and temperatures involved in each application, we design wear-resistant solutions that extend equipment lifespans.
In cement production, equipment like raw material chutes, cyclone separators, and vertical roller mills are exposed to constant abrasive wear. For these applications, we supply custom-fabricated CCO plates and offer specialized roller repair services. These parts help prevent premature wear, maintaining stable plant production rates.
Mining operations require equipment that can withstand severe abrasion and heavy impact. We design chute liners, loader bucket liners, and hopper plates that handle high-velocity rock flows, helping operators extend maintenance intervals and lower operating costs.
Steel plants operate under demanding conditions, including high temperatures, heavy loads, and abrasive sintering materials. We use high-alloy weld overlays designed to retain their mechanical strength and wear resistance at elevated operating temperatures.
Coal-fired power plants experience erosion in fuel delivery and dust collection systems. We manufacture wear-resistant piping, coal pulverizer components, and fan blades that protect against particle erosion, ensuring reliable system performance.
Handling bulk minerals at port terminals causes high abrasion on chutes and hoppers. We supply CCO plates and wear components built to resist both severe abrasive wear and coastal atmospheric corrosion.
Explore how our industrial hardfacing solutions protect critical assets and ensure operational reliability under severe wear conditions worldwide.
Maximizing cement plant uptime through wear-resistant chute linings and automated vertical roller mill refurbishment.
High-hardness CCO liners built to handle high-tonnage ore flows and severe impact wear in conveyor transfer points.
Thermal-resistant overlay plates designed to resist abrasive sintering mixtures at elevated temperatures.
Erosion-resistant liners and fan blades protecting coal pulverized fuel pipes from continuous fly ash wear.
Corrosion and wear-resistant cladding solutions for high-capacity bulk material loading hoppers.
High-purity alumina ceramics sintered at high temperatures to protect components from fine particle abrasion.
Internal overlay wear pipes engineered to withstand abrasive slurry flows in harbor dredging operations.
Custom perforated wear plates designed for sizing hot, abrasive materials in steel mill processing plants.
Stay up to date with Runxing's global trade exhibitions, academic collaborations, and industry partnerships.
We presented our latest high-hardness wear plates and automated welding machinery at the South Africa International Construction & Mining Machinery Exhibition in Johannesburg.
Yuan Shaoqiang, Dean of Tangshan University, along with Vice Dean Li Jing and Professor Yang Yuehui's materials engineering team, visited our factory to discuss joint research on metal forming technology.
Runxing made its debut at EXPOMIN in Santiago, Chile, showcasing customized wear liners and hardfacing solutions developed for South American mining operators.
Runxing has operated as a qualified agent for German brand VAUTID for six consecutive years, utilizing high-quality welding consumables to deliver high-performance hardfacing solutions.
We launched our new digital platform, runxing-machinery.com, providing procurement options, detailed technical specifications, and direct engineering support for global wear-resistant solutions.
We continue to expand our field service support network, providing automated rebuilding and overlay services for processing plants in Central Asia and Eastern Europe.
Technical answers to key questions about metallurgy, wear-resistant design, and product application parameters.
A CCO wear plate is a composite material consisting of a structural steel base plate (such as Q235B or Q355) overlaid with a highly alloyed, wear-resistant weld deposit. This deposit is applied using automated open-arc or submerged-arc cladding systems. The weld overlay contains a high volume fraction of primary chromium carbides (Cr7C3) embedded in an iron-rich matrix, which provides excellent wear resistance against severe abrasive particles.
The transverse cracks visible on CCO plates are stress-relief cracks. Because of the thermal expansion difference between the alloy overlay and the carbon steel backing plate, cooling stresses accumulate during welding. These micro-cracks form naturally to relieve this tension. They do not penetrate the structural backing plate and do not affect the overlay's adhesion, performance, or structural integrity.
Quenched and tempered steel plates (like AR400 or AR500) rely on carbon hardness achieved through heat treatment, offering uniform hardness throughout. In contrast, CCO plates feature high-hardness chromium carbides (Cr7C3) with microhardnesses up to 1500 HV. Under abrasive conditions, CCO plates typically outlast traditional quenched AR steels by 4 to 10 times, making them a more cost-effective choice for severe wear environments.
Yes, CCO plates can be cold-formed, rolled, and welded. The soft structural backing plate can be welded to existing steel structures using standard consumables (like E7018). The overlay side can then be capped using hardfacing electrodes to ensure continuous wear protection. The backing plate also allows the material to be rolled to conform to curved surfaces, such as conveyor chutes or pipe shapes.
Automated cladding machines use multi-gun CNC controls to maintain uniform welding speed, oscillation width, and heat input. This precise control results in consistent deposit thickness, even carbide distribution, and a uniform depth of penetration, avoiding high-dilution spots that could compromise the wear resistance of the overlay.
Our partnership with German brand VAUTID gives us access to high-performance, specialized alloy formulations. Using VAUTID's established metallurgical standards, we manufacture wear-resistant products that deliver consistent, reliable performance under severe industrial operating conditions.
Our wear plates and hardfacing materials are certified to international standards. These quality standards are maintained through our partnerships with leading research institutions and material partners.
Locate the exact product specification for your wear prevention project. Access direct factory-backed pricing and customization services.
High-chromium alloy deposit on a structural steel backing, matching international standards for high-stress abrasive applications.
Custom-fabricated CCO plates built to project drawings, featuring consistent hardness profiles for industrial chutes and hoppers.
Designed for field surfacing and maintenance, providing a high-hardness, wear-resistant overlay without needing an external shielding gas.
A comprehensive range of high-alloy flux-cored wires designed to protect components from severe impact and abrasive wear.
An ultra-hard overlay plate optimized for extreme wear applications, including mining chute linings and cement feed funnels.
A heavy-duty composite wear plate fabricated with a structural steel backing and a wear-resistant overlay conforming to DIN 8555.
Automated surfacing systems featuring CNC touch-screen controls, designed for the manufacturing and repair of wear-resistant plates.
Rebuilding and hardfacing services for processing rolls, vertical mill rollers, and steel rollers to extend equipment lifespans.
Runxing machinery