Shanghai Metal Corporation is proud to produce oxygen free copper tube, we are the leaders in oxygen free copper tube manufacturing for a variety of applications and supplies worldwide. Quick and reliable delivery for both small and large orders is our promise.Manufacturing Limit of Oxygen free Copper tube Outside Diameter: 4mm - 25mm Thickness: 0.27mm - 2.5mm Coil: weight: from 80kg - 500kg Coil length: 0 - 2500m Min. Oxygen: 8-10ppm. Min.P: 0%.Application of OFC copper tube: For Coaxial Cable For Communication cable For electricity Conductivity