We manufacture the product with the length of 2m to 6m and the diameter of 40mm to 140mm. Our product is characterized by low wear, unique chemical composition, high hardness of 45HRC to 55HRC and strong toughness. In addition, internal stress is removed by quenching and high temperature tempering treatment. Furthermore, our product has good straightness, and we can guarantee that problems such as break, bend or entanglement won’t occur during the service life of our product.