Specification for Longitudinal Full Thickness Tensile Strength of Strips(N/mm)
| Longitudinal Full Thickness Tensile≥ | 160 | 200 | 250 | 315 | 400 | 500 | 630 |
| 800 | 1000 | 1250 | 1600 | 2000 | 2500 | 3150 |
Widths of belts and corresponding pipe diameter specifications
| Belt Width | 360 | 600 | 800 | 1000 | 1100 | 1300 | 1600 | 1850 | 2250 | 2450 | 2900 | 3100 |
| pipe diameters | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 500 | 600 | 700 | 800 | 850 |
Tubular belt with overlay structure consists of a core, a transition layer, an upper cover layer, a lower cover layer composition and a special structural edge. The sectional structure of the belt and the names of the parts are shown in the figure.
| Overlay performance categories |
tensile strength /Mpa ≥ |
Elongation/% ≥ |
Abrasion /mm3 ≤ |
ozone resistance | Rate of change of tensile strength and elongation at break after hot air ageing / % |
| D | 18.0 | 400 | 90 | uncracked | -25~+25 |
| H | 24.0 | 450 | 120 | uncracked | -25~+25 |
| T1/T2 | 10.0 | 300 | 200 | - | -45~+45 |
| a Ozone test conditions: concentration (50±5)x10^-8 (volume fraction), temperature (40±2)℃, elongation (20±2)%, time 96h. b Hot air aging test conditions: D, H type tubular conveyor belt 70 ℃ x 168h; T1 type tubular conveyor belt 100 ℃ x 168h; T2 type tubular conveyor belt 125 ℃ x 168h. c Hot air aging test conditions: D, H type tubular conveyor belt 70 ℃ x 168h; T1 type tubular conveyor belt 100 ℃ x 168h; T1 type tubular conveyor belt 100 ℃ x 168h; T2 type tubular conveyor belt 125 ℃ x 168h. d Ozone test conditions: D and H types of tubular conveyor belt 70 ℃ x 168h. | |||||
| Note: D-strong wear working conditions; H-strong cracking working conditions; T1-heat-resistant 100 ℃ working conditions; T2-heat-resistant 125 ℃ working conditions. | |||||
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