Production Process of Large Diameter Straight Seam

Large diameter straight-seam steel pipe production process generally include hot-rolled, hot rolled, casting and other production methods, large diameter thick-walled steel pipe will generally use double-sided submerged arc welding production process, the product by bending, welding, welding, Welding, straightening, flat first multi-channel processes, details:
Large diameter straight-seam steel pipe production process generally include hot-rolled, hot rolled, casting and other production methods, large diameter thick-walled steel pipe will generally use double-sided submerged arc welding production process, the product by bending, welding, welding, Welding, straightening, flat first multi-channel processes to meet US petrochemical standards.
Large diameter straight seam steel pipe is mainly used for body support, such as bridge piling, seabed piling, high-rise building piling.
Large diameter straight seam steel pipe material used in general use Q345B, Q345C. Low temperature areas will also use Q345D, Q345E large diameter straight seam steel pipe used in large-scale steel structure construction.

Abstract from Tianjin Xinyue Steel Group