X80 pipeline steel is the main material used in the Xinjiang coal to gas export pipeline project,and its welding quali-ty plays a decisive role in pipeline construction.X80 steel pipe,as a high-strength and high toughness pipeline steel,has been widely used in fields such as oil and gas transportation.Welding is a key link in the connection of X80 steel pipes,and its weld-ing quality directly affects the safe operation and service life of the pipeline.A good welding process can not only ensure that the mechanical properties such as strength and toughness of the weld match the base material,but also improve welding efficiency and reduce construction costs.However,due to the high strength and special chemical composition of X80 steel pipes,they face some technical challenges during the welding process,such as the generation of welding cracks and embrittlement of welded joints.Therefore,conducting in-depth research on the welding process of X80 steel pipes has important practical significance.
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