Grade
|
Tensile Strength/Mpa ≥
|
Breaking Elongation/% ≥
|
Abrasion Loss/mm3 ≤
|
D
|
17
|
450
|
175
|
L
|
14
|
400
|
200
|
Note:Grade D-used for transporting highly abrasive materials.Grade L-used for transporting medium-abrasion materials.
|
Item
|
Ply to ply
|
Rubber cover to ply
|
|
Rubber cover thickness ≤1.5mm
|
Rubber cover thickness >1.5mm
|
||
All samples average value/ (N/mm) ≥
|
4.5
|
3.2
|
3.5
|
All samples min peak value/ (N/mm) ≥
|
3.9
|
2.4
|
2.9
|
Note: All samples max peak value is not more than 20N/mm.
|
Nominal belt type
|
160
|
200
|
250
|
315
|
400
|
500
|
630
|
800
|
1000
|
1250
|
1600
|
2000
|
2500
|
3150
|
Item
|
Fire resistant grade
|
||
K1
|
K2
|
K3
|
|
Duration of flame
|
Total value of flame duration of 3 samples with covers plus 3 samples without covers, not more than 45s. Any single value with covers not more than 15s, any single value without covers not more than 20s.
|
Total value of flame duration of 6 samples with covers, not more than 45s, any single value not more than 15s.
|
Average value of flame duration of 3 samples with covers, not more than 60s.
|
Static conductive properties
|
≤ 3×108Ω
|
||
Reappearance of flame
|
not allowed in any sample
|