inner tube and tyre flap
Our customer: Hankook,Dongan Shuangqian tyre group ZC Rubber Guiyang tyre,Qianjin tyre
| 1. Basic Size | |||||||
| Unitmm | |||||||
| Specification | Spread Width | Middle Thickness | Edge Thickness | Specification | Spread Width | Middle Thickness | Edge Thickness |
| 6.50-16 | ≥157 | ≥4.0 | ≤1.0 | 12.00R24(old) | ≥205 | ≥6.2 | ≤1.5 |
| 7.00-16 | ≥157 | ≥4.0 | ≤1.0 | 12.00R24(new) | ≥215 | ≥6.2 | ≤1.0 |
| 7.50-16 | ≥170 | ≥4.0 | ≤1.0 | 14.00R24 | ≥255 | ≥6.8 | ≤2.0 |
| 8.25-16 | ≥178 | ≥4.5 | ≤1.0 | 17.5-25 | ≥315 | ≥7.5 | ≤2.0 |
| 9.00-16 | ≥178 | ≥4.5 | ≤1.0 | 20.5-25 | ≥420 | ≥8.5 | ≤2.0 |
| 6.50R16 | ≥160 | ≥4.0 | ≤1.0 | 23.5-25 | ≥500 | ≥9.0 | ≤2.0 |
| 7.00R16 | ≥160 | ≥4.0 | ≤1.0 | 1350×380 | ≥290 | ≥6.0 | ≤2.0 |
| 7.50R16 | ≥170 | ≥4.0 | ≤1.0 | 7.00-15 | ≥157 | ≥4.5 | ≤1.0 |
| 8.25R16 | ≥180 | ≥4.5 | ≤1.0 | 7.00R15 | ≥157 | ≥4.5 | ≤1.0 |
| 7.00/7.50-20 | ≥165 | ≥4.5 | ≤1.5 | 8.25-15 | ≥185 | ≥6.0 | ≤1.5 |
| 8.25-20 | ≥175 | ≥5.0 | ≤1.5 | 10.00R15 | ≥205 | ≥6.5 | ≤1.5 |
| 9.00-20 | ≥178 | ≥5.0 | ≤1.5 | 8.25R15 | ≥185 | ≥6.0 | ≤1.0 |
| 10.00-20 | ≥200 | ≥5.2 | ≤1.0 | 28×9-15 | ≥170 | ≥5.0 | ≤1.0 |
| 11.00-20 | ≥205 | ≥6.0 | ≤1.5 | 250/70R15 | ≥180 | ≥5.5 | ≤1.0 |
| 12.00-20 | ≥205 | ≥6.0 | ≤1.5 | 315/70R15 | ≥195 | ≥6.0 | ≤1.0 |
| 13.00-20 | ≥220 | ≥8.5 | ≤1.5 | 5.00-15 | ≥40 | ≥3.0 | ---- |
| 14.00-20 | ≥220 | ≥8.5 | ≤1.5 | 4.00-8 | ≥100 | ≥4.0 | ≤1.0 |
| 7.50R20 | ≥175 | ≥5.0 | ≤1.5 | 5.00-8 | ≥100 | ≥4.0 | ≤1.0 |
| 8.25R20 | ≥178 | ≥5.5 | ≤1.5 | 6.00-9 | ≥110 | ≥4.0 | ≤1.0 |
| 9.00R20 | ≥210 | ≥5.5 | ≤1.0 | 7.00-9 | ≥140 | ≥4.5 | ≤1.0 |
| 10.00R20 | ≥210 | ≥5.5 | ≤1.0 | 6.50-10 | ≥120 | ≥4.5 | ≤1.0 |
| 11.00R20 | ≥220 | ≥5.5 | ≤1.0 | 7.00-12 | ≥140 | ≥4.5 | ≤1.5 |
| 12.00R20 | ≥235 | ≥6.5 | ≤1.5 | 8.25-12 | ≥140 | ≥4.5 | ≤1.5 |
| 13.00R20(old) | ≥220 | ≥8.5 | ≤1.5 | 11.00R22 | ≥208 | ≥6.5 | ≤1.5 |
| 14.00R20(new) | ≥260 | ≥6.5 | ≤1.0 | 295/80R22.5 | ≥225 | ≥5.2 | ≤1.0 |
| 1. Basic Technical Indexes | |||||||
| Order | Inspection Item | Unit | Technical Requirements | Decision Criteria | |||
| Natural Reclaimed Rubber | Butyl Reclaimed Rubber | ||||||
| 1 | Water | % | ≤1.20 | ≤0.7 | 1.When single technical index is unqualified, it should be rechecked. If its still unqualified, this technical index is judged as unqualified. | ||
| 2 | ash content | % | ≤10 | ≤7.0 | 2. Tensile Strength and Elongation at Break should be tested at three vulcanizing time points respectively. If Tensile Strength and Elongation are qualified at one vulcanizing time point(judged by the median value) and at the same time, it should be judged as qualified. | ||
| 3 | acetone extract | % | ≤20 | ≤10.0 | 3. Mooney viscosity should be tested under the condition of ML1+4×100, and judged by the median value. | ||
| 4 | Density | g/cm3 | 1.195±0.01 | 1.190±0.01 | |||
| 5 | Mooney viscosity | -- | 7595 | 60±5 | |||
| 6 | Tensile Strength | MPa | ≥10.5 | ≥8.0 | |||
| 7 | Enlongation at Break | % | ≥420 | ≥480 | |||
| 8 | Appearance | -- | Uniform in texture,no coarse particle, impurity or foreign matter | ||||
inner tube and tyre flap
