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ZZ Hardmetal was established in the hometown of Chinese tungsten carbide industry--- Zhuzhou city.
We are big manufacturer of tungsten carbide products, such as indexable inserts, inserts shims, brazed inserts, wood working tools, saw tips, mining buttons, drilling bits, wire drawing dies, forging dies, rods and strips, etc.
We also produce rock drilling tools, such as taper bits, thread bits, DTH hammer, PDC drilling tools, etc
Please visit our website to see detailed information of our products:
| http://www.zzhardmetal.cn/ |
| http://www.zzdrilling.com/ |
Our equipments are most advanced in China, such as HIP-Sinter furnace, CNC presser, Five axis grinder, CVD coating furnace, PVD coating furnace, etc.
We have strong technical team, our senior engineers are engaged in carbide industry for decades, and full of experience.
We have strict quality control system, our laboratory includes all kinds of testing instrument. We can analyse every aspect of carbide products, such as Metallurgy property,hardness, bending strength, grain size, etc.
We have customers in 64 countries, such as USA, Germany, UK, Italy, Turkey, Indian, etc.
We have Branch Company in Brazil.
| D | Tol | d | Tol | L | Tol | C |
| mm | mm | mm | mm | mm | mm | mm |
| 2.5 | +0.20~0.50 | 0.3 | ±0.10 | 330 | 0~+5.0 | 0.2 |
| 4.0 | +0.20~0.50 | 1.0 | ±0.15 | 330 | 0~+5.0 | 0.2 |
| 6.0 | +0.20~0.50 | 1.0 | ±0.15 | 330 | 0~+5.0 | 0.2 |
| 8.0 | +0.20~0.50 | 1.5 | ±0.15 | 330 | 0~+5.0 | 0.2 |
| 10.0 | +0.30~0.60 | 2.0 | ±0.20 | 330 | 0~+5.0 | 0.25 |
| 12.0 | +0.30~0.60 | 2.0 | ±0.20 | 330 | 0~+5.0 | 0.25 |
| 14.0 | +0.30~0.60 | 2.0 | ±0.20 | 330 | 0~+5.0 | 0.25 |
| 16.0 | +0.30~0.60 | 2.0 | ±0.20 | 330 | 0~+5.0 | 0.25 |
| 18.0 | +0.40~0.80 | 3.0 | ±0.25 | 330 | 0~+5.0 | 0.3 |
| 20.0 | +0.40~0.80 | 3.0 | ±0.25 | 330 | 0~+5.0 | 0.3 |
| 22.0 | +0.40~0.80 | 3.0 | ±0.25 | 330 | 0~+5.0 | 0.3 |
| 24.0 | +0.40~0.80 | 4.0 | ±0.30 | 330 | 0~+5.0 | 0.3 |
| 26.0 | +0.40~0.80 | 5.0 | ±0.35 | 330 | 0~+5.0 | 0.3 |