API pipeline steel pipe is a pipeline pipe that belongs to the American petroleum standard. Pipeline pipe is used to transport oil, steam, and water extracted from the ground to oil and natural gas industry enterprises through pipeline pipes.
Line pipes include seamless pipes and welded steel pipes. The pipe ends have flat ends, threaded ends and socket ends; their connection methods include end welding, coupling connections, socket connections, etc.
With the development of pipeline steel plate technology and the progress of welded pipe forming and welding technology, the application scope of welded pipes for pipelines is gradually expanding, especially in the large-diameter group spacing range, the advantages of welded pipes are more obvious. Coupled with the cost factor, welded pipes have been in The field of pipeline pipes occupies a dominant position, which limits the development of stainless steel seamless pipeline pipes. Steel grades include X42-70, and the varieties include onshore pipeline pipes and submarine pipeline pipes.
The production of high-grade pipeline steel pipes adopts a microalloying heat treatment process. The production cost of stainless steel seamless pipes is significantly higher than that of welded pipes. With the improvement of steel grades, such as X80 and above steel grade pipeline pipes, there are no carbon equivalent restrictions. The conventional process of seamed steel pipes is difficult to meet user requirements; all 12Cr1moV alloy pipe manufacturers are conducting scientific research to improve the corrosion resistance of their line pipes and stabilize their performance in low and high temperature environments.
Pipeline steel pipe material: L245, L360, A53, J55, N80, X42, X46, X52, X56, X60, X65, X70
Pipeline steel pipe specifications: ∮60-630×1.53-40
