China School Playground Rubber Synthetic Running Track with 13mm Thickness Iaaf, Find details and Price about China Synthetic Tracking, Running Tracking from School Playground Rubber Synthetic Running Track with 13mm Thickness Iaaf
Inspectionn item | Technical requirementes | Results |
Appearance | It is uniform color and luster,without evident chromaic aberration and no crack and stractification | √ |
Hardness (shorea), HB | 60-75 | 70 |
Rebound, % | ≥8 | 11 |
Strength of extension Mpa | ≥2.0 | 3.2 |
Tensile yield | ≥100 | 152 |
Smoldering, class | 1 | 1 |
Thickness, mm | 5.0±0.5 | 5.1 |
Difference of thickness, mm | ≤0.5 | 0.3 |
Friction coefficient | ≤0.55-0.75 | 0.65 |
Vinyl chloride,mg/kg | ≤5 | Not detected |
Soluble hcavy Metal, mg/sqm | ≤20 cadmium | 0.78 |
≤20 plimbum | 0.39 | |
Volatile content,g/sqm | ≤75 | 7.6 |