High-Galvanized Steel Cord Conveyor Belts
The high-galvanized steel cord is used to meet various special requirements. The steel cord offers high flexibility and low elongation, providing higher joint efficiency. The galvanized steel cord can closely bond with the core rubber, forming an important protective layer against corrosion.
High Strength and Lightweight
Using Goodyear standard steel cords, the single-wire breaking strength is high, and the weight per wire is light. Steel cord conveyor belts can meet the requirements of various operating conditions. Continuous development of higher-strength belts is aimed at meeting the needs of long-distance and high-lift conveyor systems.
Reduced Tension Stroke
Steel cord conveyor belts have a maximum elongation rate of 0.25% under rated tension. This feature can reduce the tension stroke in many applications, reducing investment and making it the preferred choice for long-distance or low-elongation transport.
Longer Joint Life
The dynamic bonding strength of the steel cord is much higher than the standard requirement. According to the dynamic joint test of the German standard DIN22131, the joint can have the same service life as the belt body.
High Impact Resistance
The excellent bonding performance between cover rubber and core rubber ensures good impact and tear resistance.
Steel Cord Conveyor Belts – National Standard GB/T9770-2013
| Model | ST500 | ST630 | ST800 | ST1000 | ST1250 | ST1400 | ST1600 | ST1800 | ST2000 | ST2250 | ST2500 | ST2800 | ST3150 | ST3500 | ST4000 | ST4500 | ST5000 | ST5400 | ST6300 | ST7000 | ST7500 | |—|—|—|—|—|—|—|—|—|—|—|—|—|—|—|—|—|—|—|—|—| | Longitudinal Tensile Strength | 500 | 630 | 800 | 1000 | 1250 | 1400 | 1600 | 1800 | 2000 | 2250 | 2500 | 2800 | 3150 | 3500 | 4000 | 4500 | 5000 | 5400 | 6300 | 7000 | 7500 | | Maximum Diameter of Steel Cord (mm) | 3.0 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 | 5.0 | 5.0 | 6.0 | 5.6 | 7.2 | 7.2 | 8.1 | 8.6 | 8.9 | 9.7 | 10.9 | 11.3 | 12.8 | 13.5 | 15.0 | | Common Steel Cord Diameter (mm) | 2.8 | 2.8 | 3.0 | 3.4 | 3.8 | 4.4 | 4.4 | 4.6 | 5.0 | 5.2 | 6.6 | 6.6 | 7.3 | 7.7 | 8.2 | 9.0 | 9.8 | 10.2 | 11.8 | 12.6 | 13.2 | | Single Steel Cord Strength (N) | 7.6 | 7.0 | 8.9 | 12.9 | 16.1 | 20.6 | 20.6 | 25.5 | 25.6 | 26.2 | 40.0 | 39.6 | 50.6 | 63.5 | 76.3 | 91.1 | 142.4 | 166.7 | 142.4 | 166.7 | | Steel Cord Pitch (mm) | 14 | 10 | 10 | 12 | 12 | 14 | 14 | 12 | 13.5 | 12 | 15 | 15 | 15 | 16 | 17 | 18 | 18 | 19 | 19 | 19 | | Minimum Cover Layer Thickness (mm) | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 10 | 10 | 10 | 12 | 12 | 12 | | Conveyor Belt Thickness (mm) | 10.8 | 10.8 | 11.1 | 11.4 | 11.8 | 12.4 | 12.4 | 12.6 | 13.3 | 13.2 | 16.6 | 16.6 | 18.3 | 19.7 | 21.2 | 23.2 | 24.8 | 26.3 | 31.8 | 32.6 | 33.2 | | Conveyor Belt Reference Weight (kg/m²) | 15.0 | 16.0 | 16.5 | 17.0 | 18.0 | 19.5 | 19.5 | 20.0 | 22.0 | 23.5 | 29.0 | 30.0 | 35.5 | 38.5 | 42.5 | 47.0 | 49.0 | 59.0 | 62.5 | 64.0 |
Cover Layer Physical Properties according to GB/T9770
| Performance Type | Tensile Strength (MPa) ≥ | Elongation at Break (%) ≥ | Abrasion Loss (%) ≥ |
|---|---|---|---|
| H (For conveying sharp and abrasive materials) | 44 | 120 | 40 |
| D (For conveying highly abrasive materials) | 40 | 100 | 40 |
| L (For conveying moderately abrasive materials) | 35 | 200 | 20 |
Note: H is for transporting materials that are highly abrasive and damage the belt body; D is for transporting materials that are highly abrasive; L is for transporting materials with moderate abrasion.
High-Galvanized Steel Cord
High-galvanized open steel cords are used to meet various special requirements. The steel cord offers high flexibility and low elongation, resulting in higher joint efficiency. Galvanized steel cords can closely bond with the core rubber, forming an important protective layer against corrosion.
High Strength and Lightweight
Using Goodyear standard steel cords, the single-wire breaking strength is high, and the weight per wire is light. Steel cord conveyor belts can meet the requirements of various operating conditions. Continuous development of higher-strength belts is aimed at meeting the needs of long-distance and high-lift conveyor systems.
Reduced Tension Stroke
Steel cord conveyor belts have an elongation rate of 0.25% under rated tension. In many applications, this can reduce the tension stroke, offering an investment-saving solution for long-distance or low-elongation transport.
High Impact Resistance
The excellent bonding performance between the cover rubber and core rubber ensures good impact and tear resistance.
Steel Cord Conveyor Belt
National Standard GB/T9770-2013
| Model number | ST500 | ST630 | ST800 | ST1000 | ST1250 | ST1400 | ST1600 | ST1800 | ST2000 | ST2250 | ST2500 | ST2800 | ST3150 | ST3500 | ST4000 | ST4500 | ST5000 | ST5400 | ST6300 | ST7000 | ST7500 |
| Longitudinal tensile strength | 500 | 630 | 800 | 1000 | 1250 | 1400 | 1600 | 1800 | 2000 | 2250 | 2500 | 2800 | 3150 | 3500 | 4000 | 4500 | 5000 | 5400 | 6300 | 7000 | 7500 |
| Maximum diameter of wire rope | 3.0 | 3.0 | 3.5 | 4.0 | 4.5 | 5.0 | 5.0 | 5.0 | 6.0 | 5.6 | 7.2 | 7.2 | 8.1 | 8.6 | 8.9 | 9.7 | 10.9 | 11.3 | 12.8 | 13.5 | 15.0 |
| Common wire rope diameter | 2.8 | 2.8 | 3.0 | 3.4 | 3.8 | 4.4 | 4.4 | 4.6 | 5.0 | 5.2 | 6.6 | 6.6 | 7.3 | 7.7 | 8.2 | 9.0 | 9.8 | 10.2 | 11.8 | 12.6 | 132. |
| Strength of a single wire rope | 7.6 | 7.0 | 8.9 | 12.9 | 16.1 | 20.6 | 20.6 | 25.5 | 25.6 | 26.2 | 40.0 | 39.6 | 50.5 | 56.0 | 63.5 | 76.3 | 91.0 | 96.2 | 130.2 | 142.4 | 166.7 |
| Rope spacing | 14 | 10 | 10 | 12 | 12 | 14 | 12 | 13.5 | 12 | 11 | 15 | 13.5 | 15 | 15 | 15 | 16 | 17 | 17 | 19.5 | 19.5 | 21 |
| Minimum thickness of covering layer | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 10 | 10 | 10 |
| Conveyor belt thickness | 10.8 | 10.8 | 11 | 11.4 | 11.8 | 12.4 | 12.4 | 12.6 | 13 | 13.2 | 16.6 | 16.6 | 18.3 | 19.7 | 21.2 | 23 | 24.8 | 26 | 31.8 | 32.6 | 33.2 |
| Conveyor belt reference quality | 15.0 | 16.0 | 16.5 | 17.0 | 18.0 | 19.5 | 19.5 | 20.0 | 20.5 | 22.0 | 23.5 | 29.0 | 30.0 | 35.5 | 38.5 | 42.5 | 47.0 | 19.0 | 59.0 | 62.5 | 64.0 |
| breadth-mm | Limit deviation-mm | Wire rope number | ||||||||||||||||||||
| 500 | +10/-5 | 33 | 45 | 45 | 39 | 39 | 34 | 39 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| 650 | +10/-7 | 44 | 60 | 60 | 51 | 51 | 45 | 51 | 46 | 52 | 56 | 41 | 46 | 41 | 41 | 41 | 39 | 36 | N/A | N/A | N/A | N/A |
| 800 | +10/-8 | 54 | 75 | 75 | 63 | 63 | 56 | 63 | 57 | 63 | 69 | 50 | 57 | 50 | 50 | 50 | 48 | 45 | 45 | N/A | N/A | N/A |
| 1000 | ±10 | 68 | 95 | 95 | 79 | 79 | 68 | 79 | 79 | 71 | 79 | 86 | 64 | 71 | 64 | 64 | 59 | 55 | 55 | N/A | N/A | N/A |
| 1200 | ±10 | 83 | 113 | 113 | 94 | 94 | 82 | 94 | 85 | 94 | 104 | 75 | 85 | 76 | 77 | 77 | 71 | 66 | 66 | 58 | 59 | 54 |
| 1400 | ±12 | 96 | 133 | 133 | 111 | 111 | 97 | 111 | 100 | 111 | 122 | 89 | 99 | 89 | 90 | 90 | 84 | 78 | 78 | 68 | 69 | 64 |
| 1600 | ±12 | 111 | 151 | 151 | 126 | 126 | 111 | 126 | 114 | 126 | 140 | 101 | 114 | 101 | 104 | 104 | 96 | 90 | 90 | 78 | 80 | 73 |
| 1800 | ±14 | 125 | 171 | 171 | 143 | 143 | 125 | 143 | 129 | 143 | 159 | 114 | 128 | 114 | 117 | 117 | 109 | 102 | 102 | 89 | 90 | 83 |
| 2000 | ±14 | 139 | 191 | 191 | 159 | 159 | 139 | 159 | 144 | 159 | 177 | 128 | 143 | 128 | 130 | 130 | 121 | 113 | 113 | 99 | 100 | 92 |
| 2200 | ±15 | 153 | 211 | 211 | 176 | 176 | 154 | 176 | 159 | 176 | 195 | 141 | 158 | 141 | 144 | 144 | 134 | 125 | 125 | 109 | 110 | 102 |
GB/T9770 Physical performance of the overlay
GB/T9770Cover Grade
| Performance type | Tensile strength/MPa≥ | Elongation at break/%≥ | Wear loss/%≥ |
| H | 24 | 450 | 120 |
| D | 18 | 400 | 100 |
| L | 15 | 350 | 200 |
Note :H is used for conveying sharp wear materials that have strong damage to the belt body; D for conveying high-wear materials; L For conveying medium wear materials.
