Recently, Ansteel Group has successfully developed martensitic stainless steel seamless pipes. This product opens up the seamless steel tube continuous rolling mill high-alloy steel pipe production process, overcomes the problem of the short service life of the martensitic stainless steel perforated plug
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Recently, Ansteel Group has successfully developed martensitic stainless steel seamless pipes. This product opens up the seamless steel tube continuous rolling mill high-alloy steel pipe production process, overcomes the problem of the short service life of the martensitic stainless steel perforated plug, and fills the gap in the field of high-CO_2 corrosion resistant oil well pipe products of Anshan Iron and Steel Group.
Due to the complicated hot-rolling process of martensitic stainless steel seamless steel pipes, the difficulty of hot-processing and forming, and the high requirements on tools, Anshan Iron and Steel Group has never made a breakthrough in the hot-rolling process of this variety. Since 2019, the seamless steel tube research team of Angang Iron and Steel Research Institute has worked closely with production plants and related departments to start with composition design, process design, special tool design, etc., and repeatedly study and fully master martensitic stainless steel seamless steel tubes. The key technical difficulties of production. Before the trial production, the research group organized several meetings to discuss process parameters, confirm production preparations, and carry out technical research on the problems existing in production, which solved the bottleneck problem of production. In order to complete the service life test of the plug as soon as possible, the research group actively promoted the guidance of the manufacture of plugs and other production tools to ensure the quality and delivery time of the plugs. The service life of the designed special plugs has been greatly improved, reaching the advanced level in the industry.
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