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I. Purpose
Suitable for material conveying in flame-retardant and explosion-proof environments, especially suitable for material conveying in underground coal mines.
II. Features
Flame-retardant steel cord conveyor belts, in addition to the advantages of high strength and long-distance, large-capacity material conveying of steel cord conveyor belts, also meet the safety requirements listed in the table below.
| project | Indicator Content | Indicator Requirements |
| Electrostatic discharge | The average resistance (Ω) of the top and bottom surfaces of the band. | 3≤108 |
| Roller friction | Roller surface temperature (°C) | ≤325 |
| The sample showed no smoldering or flameless combustion. | - | |
| Alcohol torch combustion (with or without flame) | Combustion of complete capping layer: Average self-extinguishing time (s) of 6 samples | ≤3 |
| Combustion of complete capping layer: Individual self-extinguishing times (s) for 6 samples | ≤10 | |
| Burn-through capping layer: Average self-extinguishing time (s) of 6 samples | ≤5 | |
| Removal of capping layer: Single value of self-extinguishing time (s) for any sample. | ≤15 | |
| Propane burner combustion | Length of completely unburned material (mm) | ≤250 |
III. Standard Structure Diagram


IV. Standards and Specifications
| Strong level | Tensile strength (kN/m) | Wire rope spacing (mm) | Wire rope diameter (mm) | Minimum breaking force of wire rope (KN) | Minimum thickness of the cover layer (mm) |
|
ST-500 |
500 |
10 |
2.5 |
5.5 |
4.0 |
|
ST-630 |
630 |
10 |
2.8 |
7.0 |
4.0 |
|
ST-800 |
800 |
10 |
3.0 |
8.9 |
4.0 |
|
ST-1000 |
1000 |
12 |
3.7 |
12.9 |
4.0 |
|
ST-1250 |
1250 |
12 |
4.2 |
16.1 |
4.0 |
|
ST-1400 |
1400 |
12 |
4.3 |
18.0 |
4.0 |
|
ST-1600 |
1600 |
12 |
4.7 |
20.6 |
4.0 |
|
ST-2000 |
2000 |
12 |
5.3 |
25.6 |
4.0 |
|
ST-2250 |
2250 |
12 |
5.3 |
29.0 |
4.0 |
|
ST-2500 |
2500 |
15 |
6.8 |
40.0 |
5.0 |
|
ST-2800 |
2800 |
15 |
7.0 |
44.8 |
5.0 |
|
ST-3150 |
3150 |
15 |
7.8 |
50.5 |
5.5 |
|
ST-3500 |
3500 |
15 |
8.2 |
56.0 |
6.0 |
|
ST-4000 |
4000 |
15 |
8.8 |
63.5 |
6.5 |
|
ST-4500 |
4500 |
16 |
9.7 |
76.3 |
7.0 |
|
ST-5000 |
5000 |
17 |
10.9 |
91.0 |
7.5 |
|
ST-5400 |
5400 |
17 |
11.3 |
98.2 |
8.0 |
|
ST-6300 |
6300 |
19.5 |
12.8 |
130.4 |
10.0 |
|
ST-7000 |
7000 |
19.5 |
13.5 |
142.4 |
10.0 |
|
ST-7500 |
7500 |
21.0 |
13.8 |
166.7 |
10.0 |
|
ST-8000 |
8000 |
21.0 |
14.0 |
180.9 |
10.0 |
|
ST-9000 |
9000 |
21.0 |
14.8 |
203.2 |
11.0 |
|
ST-10000 |
10000 |
21.0 |
15.5 |
225.0 |
11.0 |
Note: The thickness of the cover rubber, the diameter of the steel wire rope core, and the rope spacing can be customized according to customer requirements.
V. Covering adhesive
Flame retardant for mining: suitable for conveying flammable and explosive hazardous materials underground. The average value of the combustion test shall not exceed 10 seconds, and the single value shall not exceed 15 seconds. It must also pass the drum friction test and the roadway propane combustion test.
| standard | Tensile strength (MPa) | Elongation at break (%) | Wear (mm³) |
|
MT668 |
15 |
350 |
200 |

Total Equipment
23 Sets
Process Category
Blanking
Key Functionality
Easy to operate, compatible with multiple materials
Circular Saw
Round Bar Cutting Machine
Hydraulic Shearing Machine
Automatic Laser Cutting Machine
CNC Machine Tools
Total Equipment
82 Sets
Process Category
Machining
Key Functionality
High efficiency and controllable costs
Gantry Milling Machine
Vertical Lathe
CNC Lathe
CNC Grinding Machine
Upright Drilling Machine
Boring Machine
CNC Whirlwind Milling Machine
Total Equipment
15 Sets
Process Category
Hot Forging
Key Functionality
Compatible with multiple processes
Four-Column Press
Punch Press
Hot Forging Production Line
Bending Machine
Total Equipment
58 Sets
Process Category
Welding
Key Functionality
Suitable for complex welding scenarios
Automatic Welding Robot
Submerged Arc Welder (SAW)
Gas-Shielded Welder
Friction Welding Machine
Cross Welding Manipulator
Total Equipment
12 Sets
Process Category
Surface Treatment
Key Functionality
Dead-angle-free grinding, comprehensive coverage
Shot Blasting Equipment
Angle/Channel Steel Polishing Machine
Vertical Shot Blasting Machine
Automatic Double Column Machine
Powder Coating Equipment
Paint Spray Booth
Total Equipment
11 Sets
Process Category
Heat Treatment
Key Functionality
Precise and controllable parameters, strong consistency in workpiece performance
Mesh Belt Furnace
Controllable Atmosphere Sealed Box Multi-Purpose Furnace
Pit Furnace
Pusher Furnace
Bogie Hearth Furnace
Nitriding Furnace
Blanking Process
Machining Process
Hot Forging Process
Welding Process
Surface Treatment Process
Heat Treatment Process
Total Equipment
23 Sets
Process Category
Blanking
Key Functionality
Easy to operate, compatible with multiple materials
Circular Saw
Round Bar Cutting Machine
Hydraulic Shearing Machine
Automatic Laser Cutting Machine
CNC Machine Tools
Total Equipment
82 Sets
Process Category
Machining
Key Functionality
High efficiency and controllable costs
Gantry Milling Machine
Vertical Lathe
Gantry Milling Machine
Vertical Lathe
CNC Lathe
CNC Grinding Machine
Upright Drilling Machine
Boring Machine
CNC Whirlwind Milling Machine
Total Equipment
15 Sets
Process Category
Hot Forging
Key Functionality
Compatible with multiple processes
Four-Column Press
Punch Press
Hot Forging Production Line
Bending Machine
Four-Column Press
Punch Press
Hot Forging Production Line
Bending Machine
Total Equipment
58 Sets
Process Category
Welding
Key Functionality
Suitable for complex welding scenarios
Automatic Welding Robot
Submerged Arc Welder (SAW)
Gas-Shielded Welder
Friction Welding Machine
Cross Welding Manipulator
Total Equipment
12 Sets
Process Category
Surface Treatment
Key Functionality
Dead-angle-free grinding, comprehensive coverage
Shot Blasting Equipment
Shot Blasting Equipment
Angle/Channel Steel Polishing Machine
Vertical Shot Blasting Machine
Automatic Double Column Machine
Powder Coating Equipment
Paint Spray Booth
Total Equipment
11 Sets
Process Category
Heat Treatment
Key Functionality
Precise and controllable parameters, strong consistency in workpiece performance
Mesh Belt Furnace
Mesh Belt Furnace
Controllable Atmosphere Sealed Box Multi-Purpose Furnace
Pit Furnace
Pusher Furnace
Bogie Hearth Furnace
Nitriding Furnace
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