Recently, the ST10000 ultra-high-strength steel cord conveyor belt independently developed by Zhejiang Double Arrow Rubber Co., Ltd., with its outstanding performance in over 10,000 durability dynamic tests, has become one of the very few products in the global field of ST10000 ultra-high-strength steel cord conveyor belt products that have successfully passed the stringent tests conducted by the University of Hanover in Germany.

Joint strength is essential for the normal operation of the conveyor belt. During the operation of the conveyor belt, the joint part bears great tension and repeated bending stress. If the joint strength is insufficient, problems such as the fall-off of steel cord and the crack of the conveyor belt are likely to occur, which will not only lead to the decline of the operation stability, frequent material leakage, transmission interruption and other conditions, affecting the production efficiency, but also shorten the overall service life of the conveyor belt, increasing the replacement and maintenance costs. By contrast, the high joint strength can ensure the stable operation of the conveyor belt under various complex working conditions, and ensure the continuity and high efficiency of material transportation. Under the traditional process, the ultra-high strength conveyor belt joint is prone to fracture due to dynamic fatigue, failure of steel cord and rubber bonding and other problems, which restrict the development of the industry.

The dynamic fatigue joint test conducted by the University of Hanover in Germany has been recognized by the international conveying industry as a touchstone for joint technology inspection. By simulating the long-term high-frequency bending, stretching and impact composite stresses of the conveyor belt under extreme working conditions, the fatigue resistance and reliability were fully assessed in accordance with German industrial standard DIN 22110-3 Testing methods for conveyor belt joints-Part 3: Determination of time strength for conveyor belt joints (dynamical testing method). The success of ST10000 strongly confirms the outstanding leading position of Double Arrow in the industry. 

Authoritative accreditation report of the University of Hannover, Germany (partial)