Pipeline steel low temperature ocean steel ABS FH40 refers to the hot rolled coil plate or wide thick plate used to transport oil, natural gas and other large-diameter welded steel pipes. In the process of using pipeline steel, it is required not only to have high compressive strength, but also to have high low temperature toughness and excellent welding performance. Pipeline steel plates are used to make oil and gas pipelines. The main low temperature ocean steel ABS FH40 pipeline steel grades are API 5L grade B, API 5L X42, API 5L X60, API 5L X65 and so on.
In production and operation, the company always attaches great importance to product low temperature ocean steel ABS FH40 quality. Product quality is stable, performance index is superior, after-sales service is in place, the company's products have been exported to the United States, Southeast Asia, Africa, the Middle East and other countries and regions, occupying a large part of the overseas market low temperature ocean steel ABS FH40. And a large number of famous enterprises at home and abroad have formed a solid strategic partnership with the company.
low temperature ocean steel ABS FH40 annealing is to heat the steel to 30 ~ 50℃ above the critical temperature, keep it in the heat treatment furnace for a period of time, and then cool it down to room temperature with the furnace. The purpose of low temperature ocean steel ABS FH40 annealing is to refine the grain of steel, eliminate internal stress and reduce hardness, improve cutting performance, increase toughness and plasticity, and facilitate welding and rolling processes. low temperature ocean steel ABS FH40 annealing can be complete annealing, incomplete annealing, stress relief annealing, isothermal annealing and spheroidizing annealing.
Molybdenum is a well known alloy element. Molybdenum can refine the grains of steel material, improve the hardenability and thermal strength, and maintain sufficient strength and creep resistance at high temperature. Adding molybdenum to low temperature ocean steel ABS FH40, structural steel can improve mechanical properties. Molybdenum can also restrain the brittleness of alloy steel caused by quenching treatment.
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