TongBall precision alumina/zirconia ceramic valve balls, suitable for extreme abrasion, corrosion and high temperature condition (alumina and heat-resistant up to 1500 ° C). Through advanced powder metallurgy and sintering control, ultra-high hardness (≥HRA 85) and chemical inertness are achieved.Patented ultra-finishing brings a near mirror surface, significantly reducing friction and medium adhesion, lasting competent mud, powder and reinforced fluid, beyond the performance of metal alloys.
Size Range | 1/2"- 56" (Custom Sizes Available) | |
| Pressure rating | PN10- PN420(Class150-4500) | |
| Ball Material | Alumina Ceramic (Al₂O₃ content 92%~99%), Silicon Nitride Ceramic, Silicon Carbide Ceramic | |
| Manufacturing Process | Isostatic pressing + High-temperature sintering process | |
| Coaxiality | ≤0.01mm | |
| Roundness Accuracy | ≤0.02mm | |
| Surface Roughness | Ra ≤ 0.4 μm | |
| Outside Diameter Tolerance | 1/2" - 4" : +0.03 mm | 6" - 12" : +0.05 mm |
| Inner Diameter Tolerance | 1/2" - 4" : 0~ +0.03 mm | 6" - 12" : 0~+0.05 mm |
YONGJIA TONG BALL VALVE CO.,LTD.
Anfeng Industrial zone, Oubei Town Wenzhou China
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