Q690D high-strength steel

     Q690D is a high-strength structural steel welding. In which Q represents the yield strength, yield strength of 690 representatives of value, D on behalf of steel grades; common steel

   
Q69D physical
Quality levels are A, B, C, D, E. D-level impact of steel -20 ° C. Q690D can be described as resistance to low yield strength 690Mpa Wen Gaoqiang steel. Q690D steel yield strength and high tensile strength, widely used in mining machinery, engineering machinery, such as the hydraulic support, port cranes, flatbed trucks.