RPZ Valve
| Feature | Details |
|---|---|
| Product name | Stainless Steel ball |
| Material | 210/440(C)/420(C)/304(L)/316(L) |
| Size Range | 0.5mm - 150mm |
| Grade | G10 - G1000 |
| Finish | Polishing |
| Characteristics | Good corrosion resistance, food-grade safe, high precision, and widely applicable across organic chemicals and oxidizing solutions. |
| Applications | Valves, finger pumps, water pumps, motors, medical equipment, toy balls. |



| AISI Number | C% | Si% | Mn% | Cr% | Ni% | Mo% | Property |
|---|---|---|---|---|---|---|---|
| AISI 304 | 0.07 Max | 1.00 Max | 2.00 Max | 17.0-19.0 | 8.0-10.5 | - | Slightly magnetic, HRC 25 min. |
| AISI 316 | 0.07 Max | 1.00 Max | 2.00 Max | 16.5-18.5 | 10.5-13.5 | 2.0-2.5 | Excellent corrosion resistance. |
| AISI 420 | 0.07-0.25 | 1.00 Max | 1.00 Max | 12.0-14.0 | - | - | Magnetic, Martensite steel, HRC 50 min. |
| AISI 440 | 0.95-1.20 | 1.00 Max | 1.00 Max | 16.0-18.0 | - | - | Martensite, fair resistance to water and oils. |
| Material | 201 | 304 | 316 | 420C | 440C |
|---|---|---|---|---|---|
| Density (g/cm³) | 7.85 | 7.95 | 7.95 | 7.70 | 7.75 |
| Hardness (HRC) | 25 - 39 | 10 - 39 | 10 - 39 | 52 - 60 | 57 - 65 |
| Tensile Strength (PSI×10³) | 100 - 180 | 72 - 188 | 80 - 180 | 250 - 275 | 275 - 290 |



Our facility operates with over 100 dedicated employees and more than 20 years of specialized production and research experience. We specialize in the manufacturing of bearing steel balls, stainless steel balls, ceramic balls, tungsten alloy balls, and other customized materials.
We offer extensive customization for non-standard size balls, ranging from 0.5mm to 150mm (G10-G1000). With an annual output exceeding 8000 tons, our products are supported by advanced physical performance laboratories to ensure the highest quality standards.
Our precision products are widely utilized in aviation, aerospace, automotive industries, medical equipment, and precision instruments, serving markets across Southeast Asia, the Middle East, Europe, America, and Africa.