Carbon-use can be divided into carbon structural steel, carbon tool steel and easy cutting structural steel categories, carbon structural steel building project is divided into two kinds of steel and machinery manufacturing steel structures. Carbon not only plasticity and good weldability, strength, high hardness, and has good wear resistance. Therefore, carbon steel elbow stations in many industries, electricity, transportation and other concrete pump has a wide range of applications. Other parameters bending radius steel bends: R≤6000mm, and R≥3D (with R equal to 3D, 4D, 5D, 6D, 7D, 8D, 9D, 10D to indicate bending radius, D is the pipe diameter) bending angle : θ used for 15 °, 30 °, 45 °, 60 °, 90 °, 135 ° and 180 °, customers can also be made of angle bending. Straight length: Bend the ends straight length L is generally about 300mm-1500mm, also can be customized length. Standard: according to DL / T515 <>, SY5257 <> execute, or standards or technical execution according to customer requests. Uses: petroleum pipeline, gas pipeline projects, chemical plants, power plants, chemical industry high-pressure pipeline, water and so on.