Yongjia Tong Ball Valve Co., Ltd.: Your Professional Coated Valve Balls Manufacturer!
Founded in 2009, Tong Ball Valve Co., Ltd. is a national high-tech enterprise specializing in precision valve balls for severe service applications. We provide reliable solutions for global industrial valve manufacturers through advanced material processing, precision machining, and surface coating technologies. With strict quality control and full production traceability, our products are widely used in oil & gas, petrochemical, power generation, and other demanding industries worldwide.
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Why choose us?
Advanced materials & surface engineering
We specialize in difficult-to-machine materials including duplex stainless steel, titanium, Inconel, zirconium, and engineering ceramics. Combined with HVOF, plasma spray, DLC/TiN coating, and laser cladding technologies, our valve balls deliver excellent wear resistance, corrosion resistance, and long-term sealing performance.
Experienced technical support & global supply
Supported by a technical team with over 30 years of industry experience, we offer customized valve ball solutions based on different application requirements. As an authorized supplier for global companies including Emerson and Flowserve, our products have been exported to more than 20 countries and regions
Precision manufacturing for severe service
Our machining accuracy reaches roundness ≤0.001 mm, supporting stable sealing performance under high pressure, high temperature, and corrosive working conditions. Products are validated through rigorous cycle testing to ensure durability and operational reliability.
Strict quality control & full traceability
From raw material inspection to final testing, every production process follows strict quality standards. We provide 100% inspection and complete production traceability, helping customers reduce quality risks and improve supply chain confidence.
Benefits of Coated Valve Balls
Enhanced durability
Our coatings provide outstanding protection against wear, corrosion, and erosion, greatly extending the lifespan of our valves.
Improved performance
The low-friction surface reduces wear on internal components, ensuring smoother operation and better overall performance.
Resistance to harsh environments
With excellent chemical resistance, our coatings can withstand even the most corrosive environments, making our valves suitable for a wide range of applications.
Reduced maintenance costs
By increasing valve longevity and minimizing wear and tear, our coatings helps companies save on maintenance and replacement costs over time.
Product Specifications
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Chromium Nitride Coated Valve Balls |
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Size Range |
1/2" to 56" (Custom sizes available) |
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Pressure Rating |
PN10-PN420 (Class150-2500) |
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Body Material |
A105, A350 LF2, A182 F304, A182 F316, A182 F321, A182 F51, A182 F53, A182 F55, A182 F60, A182 F44, A564 630 (17-4PH) |
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Core Process/Coating |
ENP,HCR,STL6, STL12, STL20,Cr3C2, WC-Co, WC-Cr3C2-Ni, TiC-NiMo, SiC, CrC,ZrO2, Al2O3, Cr2O3, ZnO, TiO, Al2O3-TiO2,STL1, STL6, STL12,Ni60, Ni55, Ni45 etc. |
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Operating Temperature Range |
≤1200°C |
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Parameter Category |
Core Technical Parameters |
Standards for Determining Advanced Technological Level |
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Machining ball accuracy |
≤ 0.025 mm |
≤ 0.005 mm (Ultra-High Precision) |
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Processing ball Roundness |
≤ 0.025 mm |
≤ 0.011 mm (Micron-Level ) |
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Balls concentricity |
≤ 0.025 mm |
≤ 0.005 mm (Ultra-High Precision) |
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Other supplements |
≤ 0.4 μm |
≤ 0.1 μm (Mirror-Level) |
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Parameter Category |
Core Technical Parameters |
Criteria for High-End Technical Level |
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Coating Thickness Control |
Thickness Uniformity |
Thickness deviation at any spherical position ≤±8% (stricter than the general ±10% standard) |
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Thickness Tolerance Range |
100 - 300 μm (common range for wear-resistant layers); special ranges can be noted. No missed spraying for ultra-thin coatings (<10μm) |
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Coating Adhesion Performance |
Surface Hardness |
HV 1300+ |
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Bond StrengthBond Strength |
≥80 MPa |
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Interface PorosityInterface Porosity |
<0.5% |
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Coating Surface Quality |
Surface Roughness (Ra) |
≤0.2 µm |
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Spraying Accuracy (Positioning & Coverage) |
Spraying Positioning Accuracy |
±0.1mm |
Maintenance Tips for Coated Valve Balls
Regular cleaning protocols to prevent abrasion
Accumulation of dirt, rust, or scale on valve components can lead to increased friction and wear, undermining the protective coating. Implementing routine cleaning schedules helps maintain the integrity of the valve surfaces. Thoroughly clean all valve components using appropriate tools to remove contaminants, ensuring that both external and internal surfaces are addressed. Regular lubrication of moving parts, such as the valve stem, is also recommended to reduce friction and prevent abrasion during operation.
Inspection cycles: Detecting coating delamination early
Regular inspections are vital for early detection of coating delamination, which can compromise valve performance and lead to failures. Establishing systematic inspection cycles allows for the identification of signs of coating disbondment or wear. Techniques such as visual examination, dye penetrant testing, and ultrasonic assessments can be employed to detect underlying issues not visible to the naked eye. Addressing delamination early prevents more severe damage and extends the service life of the valve.
Installation best practices to avoid impact damage
Proper installation is critical to prevent impact damage that can lead to coating defects and subsequent valve malfunction. Ensure that valves are handled carefully during installation to avoid physical impacts that could compromise the coating. Align the valve accurately with connecting pipes to prevent misalignment stresses. Additionally, verify that all connections are securely tightened to the manufacturer’s recommended torque specifications to maintain structural integrity and prevent leaks.
Packaging and Shipping
Certifications
FAQ
With abundant machining experience, we are one of the most professional coated valve balls manufacturers in China. We warmly welcome you to buy coated valve balls at competitive price from our factory. If you have any enquiry about cooperation, please feel free to email us.
TiC coated ball for mining slurry valve, Chromium Oxide Coated valve Ball, Inconel Alloy-Coated Valve Balls
