X42 pipeline pipe is the pipeline pipe with steel grade of X42. The pipeline pipe is used to transport the oil, steam and water pumped out of the ground to the oil and natural gas industrial enterprises through the pipeline pipe. Pipeline pipe includes seamless pipe and welded steel pipe, with flat end, threaded end and socket end at the pipe end; The connection methods are welding, coupling connection, socket connection, etc.
The steel grade includes X42-70, and the varieties include onshore pipeline pipe and submarine pipeline pipe. At present, the production of pipeline pipe adopts the micro alloying heating treatment process, and the production cost of stainless steel seamless pipe is significantly higher than that of welded pipe. With the improvement of steel grade, such as the limit of carbon equivalent for pipeline pipe with steel grade above X80, the conventional process of seamless pipe is difficult to meet the user's requirements; At present, each 12Cr1moV alloy pipe manufacturer is carrying out scientific research work to improve the corrosion resistance of its pipeline pipes and stabilize the service performance in low temperature and high temperature environments.