Off the Road tyres (OTR)
Junma Group offers premium steel cords specifically engineered for radial tyres used in heavy-duty applications, such as engineering vehicles and special-purpose vehicles. Our steel cords are critical in ensuring the robustness and reliability of tyres that operate under demanding conditions.
Our OTR (Off-The-Road) steel cords are available in various structural types, including normal and HE. They are also categorized by tensile strength into NT and HT grades, catering to different performance requirements. These steel cords are designed to enhance the durability, strength, and overall performance of tyres, making them suitable for the rigorous demands of heavy machinery and specialized vehicles.
By choosing Junma Group’s OTR steel cords, customers can be confident in the consistent quality and superior performance of their tyres, contributing to safer and more efficient operations in the field.
| Type | Construction | Cord diameter (±5%, mm ) | Lay Length (±5%, mm) | Lay direction | Min. breaking strength（N） | Linear Density （±5%, g/m） |
| （OTR） | 4*6*0.25 HE | 1.82 | 5.7/9.5 | S/S | 2485 | 10.17 |
| 4*7*0.25 HE | 1.82 | 6.3/10.5 | S/S | 2880 | 11.25 | |
| 7*7*0.22 HT | 1.98 | 12.5/20 | S/Z | 5130 | 15.1 | |
| 7*7*0.22+0.15 HT | 2.22 | 12.5/20.0/5.0 | S/Z/S | 5130 | 15.2 | |
| 7*7*0.25 HT | 2.28 | 12.5/20 | S/Z | 6350 | 19.6 | |
| 7*7*0.25+0.15 HT | 2.49 | 12.5/20.0/5 | S/Z/S | 6350 | 19.8 | |
| 7*7*0.28+0.15 HT | 2.79 | 14/25/5 | SZS | 7780 | 24.83 | |
| 7*7*0.30+0.15 HT | 2.96 | 14/25/5 | SZS | 9360 | 28.45 | |
| 7*(3+9*0.22) HT | 2.86 | 6.3/12.5/22 | ZZ/SS/Z | 8400 | 26.1 | |
| 7*(3+9*0.22)+0.15 HT | 3.12 | 6.3/12.5/22/5 | ZZ/SS/Z/S | 8400 | 26.6 | |
| 7*(3+9*0.245) HT | 3.1 | 6.3/12.5/28 | ZZ/SS/Z | 9000 | 32 | |
| 7*(3+9*0.245)+0.20 HT | 3.3 | 6.3/12.5/28/5 | ZZ/SS/Z/S | 9000 | 33.07 | |
| 7*(3+9*0.30) HT | 3.65 | 9/18/32 | ZZ/SS/Z | 14800 | 46.65 | |
| 7*(3+9*0.30)+0.20 HT | 3.9 | 12.5/18/32/5 | ZZ/SS/Z/S | 14800 | 49.27 | |
| 7*(3+9+15*0.175)+0.20 HT | 3.47 | 5/10/16/38/5 | ZZZ/ZZZ/S/Z | 11470 | 37.5 | |
| 7*(3+9+15*0.22)+0.20 HT | 4.35 | 6.3/12.5/18/48/5 | SSS/ZZZ/S/Z | 18000 | 59.16 | |
| 7*(3+9+15*0.245)+0.245 HT | 4.84 | 6.3/12.5/18/55/5 | ZZZ/ZZZ/S/Z | 22300 | 73.9 | |
| 3+9*0.25+8*7*0.22+0.175 HT | 2.7 | 6.8/13.5/13.5/33.3/5 | SS/ZZ/S | 7170 | 22.18 |
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