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It’s mainly used for conveying materials in underground coalmines, which can be divided into PVC type and PVG type. For the PVC type, both the top and bottom cover is PVC rubber cover, with the coating rubber thickness of ≥0.8mm and at a slope angle of ＜16°; For the PVG type, both the top and bottom cover is rubber blends PVC, with the coating rubber thickness of 1.5~4.5mm,and at a slope angle of ＜20°.
| Strength grade | Tensile strength in wrap(Min.) | Cover grade and recommended thickness(mm) | Belt Width(mm) | |
| PVC | PVG | |||
| 680s/Grade4 | 680 | 0.8+0.8 | 1.5+1.5 | 650~1600 |
| 800s/Grade5 | 800 | 0.8+0.8 | 1.5+1.5 | |
| 1000s/Grade6 | 1000 | 0.8+0.8 | 1.5+1.5 | |
| 1250s/Grade7 | 1250 | 0.8+0.8 | 1.5+1.5 | |
| 1400s/Grade8 | 1400 | 0.8+0.8 | 1.5+1.5 | |
| 1600s/Grade9 | 1600 | 0.8+0.8 | 2+2 | |
| 1800s/Grade10 | 1800 | 0.8+0.8 | 2+2 | |
| 2000s/Grade11 | 2000 | 0.8+0.8 | 2+2 | |
| 2240s/Grade12 | 2240 | 0.8+0.8 | 2+2 | |
| Items | Indexes | ||
| Anti-static property | Average electrical resistance of both surface (Ω) | 3.0*108 | |
| Drum friction | surface temperature of drum (℃) | ≤325 | |
| Any test piece shall not show any sign of flame or glow | |||
| Burning on spirit burner (flame of glow) | Burning with cover rubber | Average duration of flame for six text piece (s) | ≤3 |
| Duration of flame for any individual text piece (s) | ≤10 | ||
| Burning without cover rubber | Average duration of flame for six text piece (s) | ≤5 | |
| Duration of flame for any individual text piece (s) | ≤15 | ||
| Burning on propane burner | Length that is completely undamaged by flame .mm | ≥250mm | |
Stock Code:660217
