DEVELOPMENT OF D652 LOW-ALLOY HI-STRENGTH SEAMLESS STEEL TUBE

Introduced in the paper are the development of the new D652 steel and the research concerning the trial production of the cold-rolled (drawn) seamless tubes for lifting arm with the said steel. Based on comparision concerning effects by different processes on the structure and properties of the tube, the optimum process flow has been worked out so as to meet relevant product creteria.