Large diameter straight seam steel pipe

  Generally, we call finger-welded pipes with an outer diameter greater than 500mm or more as large-diameter straight-seam steel pipes. Large-diameter straight-seam steel pipes are the best choice for large-scale pipeline projects, water and gas transmission projects, and urban pipe network construction. In other words, large-diameter straight-seam steel pipes have larger diameters and smaller limitations (the current maximum diameter of seamless steel pipes is 1020mm, the maximum diameter of double-weld steel pipes can reach 2020mm, and the maximum diameter of single-weld seams can reach 1420mm), simple process and low price. and other advantages are widely used. my country's West-East Gas Pipeline uses this type of steel pipe up to 200,000 tons, with broad market prospects, good quality and reasonable price, and is widely used in various industries.

  Double-sided submerged arc welded straight seam steel pipes are also straight seam steel pipes. The submerged arc welded straight seam steel pipe adopts the JCOE cold forming process, the welding seam adopts the welding wire, and the submerged arc welding adopts the particle flux. The main production process of submerged arc welded straight seam steel pipe is relatively flexible, and it can produce any specification, which largely meets the international requirements for steel pipe size, while domestic standard production usually adopts high frequency straight seam steel pipe.